# arcgis.mapping module¶

The arcgis.mapping module provides components for visualizing GIS data and analysis. This module includes WebMap and WebScene components that enable 2D and 3D mapping and visualization in the GIS. This module also includes mapping layers like MapImageLayer, SceneLayer and VectorTileLayer.

## WebMap¶

class arcgis.mapping.WebMap(webmapitem=None)

Bases: collections.OrderedDict

Represents a web map and provides access to its basemaps and operational layers as well as functionality to visualize and interact with them.

An ArcGIS web map is an interactive display of geographic information that you can use to tell stories and answer questions. Maps contain a basemap over which a set of data layers called operational layers are drawn. To learn more about web maps, refer: https://doc.arcgis.com/en/arcgis-online/reference/what-is-web-map.htm

Web maps can be used across ArcGIS apps because they adhere to the same web map specification. This means you can author web maps in one ArcGIS app (including the Python API) and view and modify them in another. To learn more about the web map specification, refer: https://developers.arcgis.com/web-map-specification/

 Argument Description webmapitem Optional Item object whose Item.type is ‘Web Map’. If not specified an empty WebMap object is created with some useful defaults.
# USAGE EXAMPLE 1: Creating a WebMap object from an existing web map item

from arcgis.mapping import WebMap
from arcgis.gis import GIS

# connect to your GIS and get the web map item
wm_item = gis.content.get('1234abcd_web map item id')

# create a WebMap object from the existing web map item
wm = WebMap(wm_item)
type(wm)
>> arcgis.mapping._types.WebMap

# explore the layers in this web map using the 'layers' property
wm.layers
>> [{}...{}]  # returns a list of dictionaries representing each operational layer

add_layer(layer, options=None)

Adds the given layer to the WebMap.

 Argument Description layer Required object. You can add: Layer objects such as FeatureLayer, MapImageLayer, ImageryLayer etc. Item objects and FeatureSet and FeatureCollections Table objects options Optional dict. Specify properties such as title, symbol, opacity, visibility, renderer for the layer that is added. If not specified, appropriate defaults are applied.
# USAGE EXAMPLE: Add feature layer and map image layer item objects to the WebMap object.

crime_fl_item = gis.content.search("2012 crime")[0]
streets_item = gis.content.search("LA Streets","Map Service")[0]

wm = WebMap()  # create an empty web map with a default basemap
>> True

# Add crime layer, but customize the title, transparency and turn off the default visibility.
wm.add_layer(fl_item, {'title':'2012 crime in LA city',
'opacity':0.5,
'visibility':False})
>> True

Returns

True if layer was successfully added. Else, raises appropriate exception.

add_table(table, options=None)

Adds the given layer to the WebMap.

 Argument Description table Required object. You can add: Table objects options Optional dict. Specify properties such as title, symbol, opacity, visibility, renderer for the table that is added. If not specified, appropriate defaults are applied.
wm = WebMap()
table = Table('https://some-url.com/')

Returns

True if table was successfully added. Else, raises appropriate exception.

property basemap

Base map layers in the web map

Returns

List of layers as dictionaries

# Usage example 1: Get the basemap used in the web map

from arcgis.mapping import WebMap
wm = WebMap(wm_item)

wm.basemap
>> {"baseMapLayers": [
{"id": "defaultBasemap",
"layerType": "ArcGISTiledMapServiceLayer",
"url": "https://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer",
"visibility": true,
"opacity": 1,
"title": "Topographic"
}],
"title": "Topographic"
}

# Usage example 2: Set the basemap used in the web map
from arcgis.mapping import WebMap
wm = WebMap(wm_item)

print(wm.basemaps)
>> ['dark-gray', 'dark-gray-vector', 'gray', 'gray-vector', 'hybrid', 'national-geographic', 'oceans', 'osm', 'satellite', 'streets', 'streets-navigation-vector', 'streets-night-vector', 'streets-relief-vector', 'streets-vector', 'terrain', 'topo', 'topo-vector']
wm.basemap = 'dark-gray'
print(wm.gallery_basemaps)
>> ['custom_dark_gray_canvas', 'imagery', 'imagery_hybrid', 'light_gray_canvas', 'custom_basemap_vector_(proxy)', 'world_imagery_(proxy)', 'world_street_map_(proxy)']
wm.basemap = 'custom_dark_gray_canvas'

property basemaps

A list of possible basemaps to set for the map

property gallery_basemaps

View your portal’s custom basemap group

property layers

Operational layers in the web map

Returns

List of Layers as dictionaries

# USAGE EXAMPLE 1: Get the list of layers from a web map

from arcgis.mapping import WebMap
wm = WebMap(wm_item)

wm.layers
>> [{"id": "Landsat8_Views_515",
"layerType": "ArcGISImageServiceLayer",
"url": "https://landsat2.arcgis.com/arcgis/rest/services/Landsat8_Views/ImageServer",
...},
{...}]

len(wm.layers)
>> 2

property offline_areas

Resource manager for offline areas cached for the web map :return:

remove_layer(layer)

Removes the specified layer from the web map. You can get the list of layers in map using the ‘layers’ property and pass one of those layers to this method for removal form the map.

 Argument Description layer Required object. Pass the layer that needs to be removed from the map. You can get the list of layers in the map by calling the layers property.
remove_table(table)

Removes the specified table from the web map. You can get the list of tables in map using the ‘tables’ property and pass one of those tables to this method for removal form the map.

 Argument Description table Required object. Pass the table that needs to be removed from the map. You can get the list of tables in the map by calling the tables property.
save(item_properties, thumbnail=None, metadata=None, owner=None, folder=None)

Save the WebMap object into a new web map Item in your GIS.

Note

If you started out with a fresh WebMap object, use this method to save it as a the web map item in your GIS.

If you started with a WebMap object from an existing web map item, calling this method will create a new item with your changes. If you want to update the existing web map item with your changes, call the update() method instead.

 Argument Description item_properties Required dictionary. See table below for the keys and values. thumbnail Optional string. Either a path or URL to a thumbnail image. metadata Optional string. Either a path or URL to the metadata. owner Optional string. Defaults to the logged in user. folder Optional string. Name of the folder into which the web map should be saved.

Key:Value Dictionary Options for Argument item_properties

 Key Value typeKeywords Optional string. Provide a lists all sub-types, see URL 1 below for valid values. description Optional string. Description of the item. title Optional string. Name label of the item. tags Optional string. Tags listed as comma-separated values, or a list of strings. Used for searches on items. snippet Optional string. Provide a short summary (limit to max 250 characters) of the what the item is. accessInformation Optional string. Information on the source of the content. licenseInfo Optional string. Any license information or restrictions regarding the content. culture Optional string. Locale, country and language information. access Optional string. Valid values are private, shared, org, or public. commentsEnabled Optional boolean. Default is true, controls whether comments are allowed (true) or not allowed (false). culture Optional string. Language and country information.

The above are the most common item properties (metadata) that you set. To get a complete list, see https://developers.arcgis.com/rest/users-groups-and-items/common-parameters.htm#ESRI_SECTION1_1FFBA7FE775B4BDA8D97524A6B9F7C98

Returns

Item object corresponding to the new web map Item created.

# USAGE EXAMPLE 1: Save a WebMap object into a new web map item
from arcgis.gis import GIS
from arcgis.mapping import WebMap

# compose web map by adding, removing, editing layers and basemaps
wm = WebMap()  # new web map

# save the web map
webmap_item_properties = {'title':'Ebola incidents and facilities',
'snippet':'Map created using Python API showing locations of Ebola treatment centers',
'tags':['automation', 'ebola', 'world health', 'python']}

new_wm_item = wm.save(webmap_item_properties, thumbnail='./webmap_thumbnail.png')

# to visit the web map using a browser
print(new_wm_item.homepage)

property tables

Tables in the web map

Returns

List of Tables as dictionaries

wm = WebMap()
table = Table('https://some-url.com/')
wm.tables
>> [{"id": "fZvgsrA68ElmNajAZl3sOMSPG3iTnL",
"title": "change_table",
"url": "https://some-url.com/",
"popupInfo": {
...

update(item_properties=None, thumbnail=None, metadata=None)

Updates the web map item in your GIS with the changes you made to the WebMap object. In addition, you can update other item properties, thumbnail and metadata.

Note

If you started with a WebMap object from an existing web map item, calling this method will update the item with your changes.

If you started out with a fresh WebMap object (without a web map item), calling this method will raise a RuntimeError exception. If you want to save the WebMap object into a new web map item, call the save() method instead.

For item_properties, pass in arguments for the properties you want to be updated. All other properties will be untouched. For example, if you want to update only the item’s description, then only provide the description argument in item_properties.

 Argument Description item_properties Optional dictionary. See table below for the keys and values. thumbnail Optional string. Either a path or URL to a thumbnail image. metadata Optional string. Either a path or URL to the metadata.

Key:Value Dictionary Options for Argument item_properties

 Key Value typeKeywords Optional string. Provide a lists all sub-types, see URL 1 below for valid values. description Optional string. Description of the item. title Optional string. Name label of the item. tags Optional string. Tags listed as comma-separated values, or a list of strings. Used for searches on items. snippet Optional string. Provide a short summary (limit to max 250 characters) of the what the item is. accessInformation Optional string. Information on the source of the content. licenseInfo Optional string. Any license information or restrictions regarding the content. culture Optional string. Locale, country and language information. access Optional string. Valid values are private, shared, org, or public. commentsEnabled Optional boolean. Default is true, controls whether comments are allowed (true) or not allowed (false).

The above are the most common item properties (metadata) that you set. To get a complete list, see https://developers.arcgis.com/rest/users-groups-and-items/common-parameters.htm#ESRI_SECTION1_1FFBA7FE775B4BDA8D97524A6B9F7C98

Returns

A boolean indicating success (True) or failure (False).

# USAGE EXAMPLE 1: Update an existing web map

from arcgis.gis import GIS
from arcgis.mapping import WebMap

# edit web map by adding, removing, editing layers and basemaps
wm = WebMap()  # new web map

# save the web map
webmap_item_properties = {'title':'Ebola incidents and facilities',
'snippet':'Map created using Python API showing locations of Ebola treatment centers',
'tags':['automation', 'ebola', 'world health', 'python']}

new_wm_item = wm.save(webmap_item_properties, thumbnail='./webmap_thumbnail.png')

# to visit the web map using a browser
print(new_wm_item.homepage)


## OfflineMapAreaManager¶

class arcgis.mapping.OfflineMapAreaManager(item, gis)

Bases: object

Helper class to manage offline map areas attached to a web map item. Users should not instantiate this class directly, instead, should access the methods exposed by accessing the offline_areas property on the WebMap object.

create(area, item_properties=None, folder=None, min_scale=None, max_scale=None, layers_to_ignore=None, refresh_schedule='Never', refresh_rates=None, enable_updates=False, ignore_layers=None, tile_services=None, future=False)

Create offline map area items and packages for ArcGIS Runtime powered applications. This method creates two different types of items. It first creates ‘Map Area’ items for the specified extent or bookmark. Next it creates one or more map area packages corresponding to each layer type in the extent.

Note

• There can be only 1 map area item for an extent or bookmark.

• You need to be the owner of the web map or an administrator of your GIS.

 Argument Description area Required object. Bookmark or extent. Specify as either: bookmark nameWebMap.definition.bookmarks returns list of bookmarks. list of coordinate pairs:[[‘xmin’, ‘ymin’], [‘xmax’, ‘ymax’]] dictionary:{‘xmin’: , ‘ymin’: , ‘xmax’: , ‘ymax’: , ‘spatialReference’ : {‘wkid’ : }} If spatial reference is not specified, it is assumed ‘wkid’: 4326. item_properties Required dictionary. See table below for the keys and values. folder Optional string. Specify a folder name if you want the offline map area item and the packages to be created inside a folder. min_scale Optional number. Specify the minimum scale to cache tile and vector tile layers. When zoomed out beyond this scale, cached layers would not display. max_scale Optional number. Specify the maximum scale to cache tile and vector tile layers. When zoomed in beyond this scale, cached layers would not display. layers_to_ignore Optional List of layer objects to exclude when creating offline packages. You can get the list of layers in a web map by calling the layers property on the WebMap object. refresh_schedule Optional string. Allows for the scheduling of refreshes at given times. The following are valid variables: Never - never refreshes the offline package (default) Daily - refreshes everyday Weekly - refreshes once a week Monthly - refreshes once a month refresh_rates Optional dict. This parameter allows for the customization of the scheduler. The dictionary accepts the following: {“hour” : 1 “minute” = 0 “nthday” = 3 “day_of_week” = 0 } hour - a value between 0-23 (integers) minute a value between 0-60 (integers) nthday - this is used for monthly only. This say the refresh will occur on the ‘x’ day of the month. day_of_week - a value between 0-6 where 0 is Sunday and 6 is Saturday. Example Daily: {“hour”: 10, “minute” : 30 } This means every day at 10:30 AM UTC Example Weekly: {“hour” : 23, “minute” : 59, “day_of_week” : 4 } This means every Wednesday at 11:59 PM UTC enable_updates Optional Boolean. Allows for the updating of the layers. ignore_layers Optional List. A list of individual layers, specified with their service URLs, in the map to ignore. The task generates packages for all map layers by default. Example: tile_services Optional List. An array of JSON objects that contains additional export tiles enabled tile services for which tile packages (.tpk or .vtpk) need to be created. Each tile service is specified with its URL and desired level of details. Example: [ {“url”: “https://tiledbasemaps.arcgis.com/arcgis/rest/services/World_Imagery/MapServer”, “levels”: “17,18,19” } ]

Key:Value Dictionary Options for Argument item_properties

 Key Value description Optional string. Description of the item. title Optional string. Name label of the item. tags Optional string. Tags listed as comma-separated values, or a list of strings. Used for searches on items. snippet Optional string. Provide a short summary (limit to max 250 characters) of the what the item is.
Returns

Item object for the offline map area item that was created. If Future==True, then the result is a PackageJob

USAGE EXAMPLE: Creating offline map areas

wm = WebMap(wm_item)

# create offline areas ignoring a layer and for certain min, max scales for other layers
item_prop = {'title': 'Clear lake hyperspectral field campaign',
'snippet': 'Offline package for field data collection using spectro-radiometer',
'tags': ['python api', 'in-situ data', 'field data collection']}

aviris_layer = wm.layers[-1]

north_bed = wm.definition.bookmarks[-1]['name']
wm.offline_areas.create(area=north_bed, item_properties=item_prop,
folder='clear_lake', min_scale=9000, max_scale=4500,
layers_to_ignore=[aviris_layer])


Note

This method executes silently. To view informative status messages, set the verbosity environment variable as shown below:

USAGE EXAMPLE: setting verbosity

from arcgis import env
env.verbose = True

list()

Returns a list of Map Area items related to the current WebMap object.

Note

Map Area items and the corresponding offline packages cached for each share a relationship of type ‘Area2Package’. You can use this relationship to get the list of package items cached for a particular Map Area item. Refer to the Python snippet below for the steps:

USAGE EXAMPLE: Finding packages cached for a Map Area item

from arcgis.mapping import WebMap
wm = WebMap(a_web_map_item_object)
all_map_areas = wm.offline_areas.list()  # get all the offline areas for that web map

area1 = all_map_areas[0]
area1_packages = area1.related_items('Area2Package','forward')

for pkg in area1_packages:
print(pkg.homepage)  # get the homepage url for each package item.

Returns

List of Map Area items related to the current WebMap object

modify_refresh_schedule(item, refresh_schedule=None, refresh_rates=None)

Modifies an Existing Package’s Refresh Schedule for offline packages.

 Argument Description item Required Item. This is the Offline Package to update the refresh schedule. refresh_schedule Optional String. This is the rate of refreshing. The following are valid variables: Never - never refreshes the offline package (default) Daily - refreshes everyday Weekly - refreshes once a week Monthly - refreshes once a month refresh_rates Optional dict. This parameter allows for the customization of the scheduler. Note all time is in UTC. The dictionary accepts the following: {“hour” : 1 “minute” = 0 “nthday” = 3 “day_of_week” = 0 } hour - a value between 0-23 (integers) minute a value between 0-60 (integers) nthday - this is used for monthly only. This say the refresh will occur on the ‘x’ day of the month. day_of_week - a value between 0-6 where 0 is Sunday and 6 is Saturday. Example Daily: {“hour”: 10, “minute” : 30 } This means every day at 10:30 AM UTC Example Weekly: {“hour” : 23, “minute” : 59, “day_of_week” : 4 } This means every Wednesday at 11:59 PM UTC
Returns

boolean

## Updates Offline Package Building Everyday at 10:30 AM UTC

gis = GIS(profile='owner_profile')
item = gis.content.get('9b93887c640a4c278765982aa2ec999c')
oa = wm.offline_areas.modify_refresh_schedule(item.id, 'daily', {'hour' : 10, 'minute' : 30})

property offline_properties

This property allows users to configure the offline properties for a webmap. The offline_properties allows for the definition of how available offline editing, basemap, and read-only layers behave in the web map application.

 Argument Description values Required Dict. The key/value object that defines the offline application properties.

The dictionary supports the following keys in the dictionary

Returns

Dictionary

update(offline_map_area_items=None, future=False)

Refreshes existing map area packages associated with the list of map area items specified. This process updates the packages with changes made on the source data since the last time those packages were created or refreshed.

Note

• Offline map area functionality is only available if your GIS is ArcGIS Online.

• You need to be the owner of the web map or an administrator of your GIS.

 Argument Description offline_map_area_items Optional list. Specify one or more Map Area items for which the packages need to be refreshed. If not specified, this method updates all the packages associated with all the map area items of the web map. To get the list of Map Area items related to the WebMap object, call the list() method. future Optional Boolean.
Returns

Dictionary containing update status.

Note

This method executes silently. To view informative status messages, set the verbosity environment variable as shown below:

USAGE EXAMPLE: setting verbosity

from arcgis import env
env.verbose = True


## PackagingJob¶

class arcgis.mapping.PackagingJob(future, notify=False)

Bases: object

Represents a Single Packaging Job.

 Argument Description future Required ccurrent.futures.Future. The async object created by the geoprocessing (GP) task. notify Optional Boolean. When set to True, a message will inform the user that the geoprocessing task has completed. The default is False.
cancel()

Attempt to cancel the call. If the call is currently being executed or finished running and cannot be cancelled then the method will return False, otherwise the call will be cancelled and the method will return True.

Returns

boolean

cancelled()

Return True if the call was successfully cancelled.

Returns

boolean

done()

Return True if the call was successfully cancelled or finished running.

Returns

boolean

property ellapse_time

Returns the Ellapse Time for the Job

result()

Return the value returned by the call. If the call hasn’t yet completed then this method will wait.

Returns

object

running()

Return True if the call is currently being executed and cannot be cancelled.

Returns

boolean

property status

returns the GP status

Returns

String

## WebScene¶

class arcgis.mapping.WebScene(websceneitem)

Bases: collections.OrderedDict

Represents a web scene and provides access to its basemaps and operational layers as well as functionality to visualize and interact with them.

If you would like more robust webscene authoring functionality, consider using the MapView class. You need to be using a Jupyter environment for the MapView class to function properly, but you can make copies of WebScenes, add layers using a simple add_layer() call, adjust the basemaps, save to new webscenes, and more.

update([E, ]**F) → None. Update D from dict/iterable E and F.

If E is present and has a .keys() method, then does: for k in E: D[k] = E[k] If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v In either case, this is followed by: for k in F: D[k] = F[k]

## MapImageLayer¶

class arcgis.mapping.MapImageLayer(url, gis=None)

MapImageLayer allows you to display and analyze data from sublayers defined in a map service, exporting images instead of features. Map service images are dynamically generated on the server based on a request, which includes an LOD (level of detail), a bounding box, dpi, spatial reference and other options. The exported image is of the entire map extent specified.

MapImageLayer does not display tiled images. To display tiled map service layers, see TileLayer.

create_dynamic_layer(layer)

A dynamic layer / table method represents a single layer / table of a map service published by ArcGIS Server or of a registered workspace. This resource is supported only when the map image layer supports dynamic layers, as indicated by supportsDynamicLayers on the map image layer properties.

 Argument Description layer required dict. Dynamic layer/table source definition. Syntax: { “id”: , “source”: , //required “definitionExpression”: “”, “drawingInfo”: { “renderer”: , “transparency”: , “scaleSymbols”: , “showLabels”: , “labelingInfo”: }, “layerTimeOptions”: //supported only for time enabled map layers { “useTime” : , “timeDataCumulative” : , “timeOffset” : , “timeOffsetUnits” : “” } }
Returns

arcgis.features.FeatureLayer or None (if not enabled)

estimate_export_tiles_size(export_by, levels, tile_package=False, export_extent='DEFAULTEXTENT', area_of_interest=None, asynchronous=True, **kwargs)

The estimate_export_tiles_size method is an asynchronous task that allows estimation of the size of the tile package or the cache data set that you download using the Export Tiles operation. This operation can also be used to estimate the tile count in a tile package and determine if it will exceced the maxExportTileCount limit set by the administrator of the service. The result of this operation is Map Service Job. This job response contains reference to Map Service Result resource that returns the total size of the cache to be exported (in bytes) and the number of tiles that will be exported.

 Argument Description tile_package optional boolean. Allows estimating the size for either a tile package or a cache raster data set. Specify the value true for tile packages format and false for Cache Raster data set. The default value is False levels required string. Specify the tiled service levels for which you want to get the estimates. The values should correspond to Level IDs, cache scales or the Resolution as specified in export_by parameter. The values can be comma separated values or a range. Example 1: 1,2,3,4,5,6,7,8,9 Example 2: 1-4,7-9 export_by required string. The criteria that will be used to select the tile service levels to export. The values can be Level IDs, cache scales or the Resolution (in the case of image services). Values: LevelID, Resolution, Scale export_extent The extent (bounding box) of the tile package or the cache dataset to be exported. If extent does not include a spatial reference, the extent values are assumed to be in the spatial reference of the map. The default value is full extent of the tiled map service. Syntax: , , , Example: -104,35.6,-94.32,41 area_of_interest optiona dictionary or Polygon. This allows exporting tiles within the specified polygon areas. This parameter supersedes extent parameter. Example: { “features”: [{“geometry”:{“rings”:[[[-100,35], [-100,45],[-90,45],[-90,35],[-100,35]]], “spatialReference”:{“wkid”:4326}}}]} asynchronous optional boolean. The estimate function is run asynchronously requiring the tool status to be checked manually to force it to run synchronously the tool will check the status until the estimation completes. The default is True, which means the status of the job and results need to be checked manually. If the value is set to False, the function will wait until the task completes.
Returns

dictionary

export_map(bbox, bbox_sr=None, size='600, 550', dpi=200, image_sr=None, image_format='png', layer_defs=None, layers=None, transparent=False, time_value=None, time_options=None, dynamic_layers=None, gdb_version=None, scale=None, rotation=None, transformation=None, map_range_values=None, layer_range_values=None, layer_parameter=None, f='json', save_folder=None, save_file=None, **kwargs)

The export operation is performed on a map service resource. The result of this operation is a map image resource. This resource provides information about the exported map image such as its URL, its width and height, extent and scale.

Returns

string, image of the map.

export_tiles(levels, export_by='LevelID', tile_package=False, export_extent='DEFAULT', optimize_for_size=True, compression=75, area_of_interest=None, asynchronous=False, **kwargs)

The exportTiles operation is performed as an asynchronous task and allows client applications to download map tiles from a server for offline use. This operation is performed on a Map Service that allows clients to export cache tiles. The result of this operation is Map Service Job. This job response contains a reference to the Map Service Result resource, which returns a URL to the resulting tile package (.tpk) or a cache raster dataset. exportTiles can be enabled in a service by using ArcGIS for Desktop or the ArcGIS Server Administrator Directory. In ArcGIS for Desktop make an admin or publisher connection to the server, go to service properties, and enable Allow Clients to Export Cache Tiles in the advanced caching page of the Service Editor. You can also specify the maximum tiles clients will be allowed to download. The default maximum allowed tile count is 100,000. To enable this capability using the Administrator Directory, edit the service, and set the properties exportTilesAllowed=true and maxExportTilesCount=100000.

At 10.2.2 and later versions, exportTiles is supported as an operation of the Map Server. The use of the http://Map Service/exportTiles/submitJob operation is deprecated. You can provide arguments to the exportTiles operation as defined in the following parameters table:

 Argument Description levels required string. Specifies the tiled service levels to export. The values should correspond to Level IDs, cache scales. or the resolution as specified in export_by parameter. The values can be comma separated values or a range. Make sure tiles are present at the levels where you attempt to export tiles. Example 1: 1,2,3,4,5,6,7,8,9 Example 2: 1-4,7-9 export_by required string. The criteria that will be used to select the tile service levels to export. The values can be Level IDs, cache scales. or the resolution. The defaut is ‘LevelID’. Values: LevelID | Resolution | Scale tile_package optiona boolean. Allows exporting either a tile package or a cache raster data set. If the value is true, output will be in tile package format, and if the value is false, a cache raster data set is returned. The default value is false. export_extent optional dictionary or string. The extent (bounding box) of the tile package or the cache dataset to be exported. If extent does not include a spatial reference, the extent values are assumed to be in the spatial reference of the map. The default value is full extent of the tiled map service. Syntax: , , , Example 1: -104,35.6,-94.32,41 Example 2: {“xmin” : -109.55, “ymin” : 25.76, “xmax” : -86.39, “ymax” : 49.94, “spatialReference” : {“wkid” : 4326}} optimize_for_size optional boolean. Use this parameter to enable compression of JPEG tiles and reduce the size of the downloaded tile package or the cache raster data set. Compressing tiles slightly compromises the quality of tiles but helps reduce the size of the download. Try sample compressions to determine the optimal compression before using this feature. The default value is True. compression=75, optional integer. When optimize_for_size=true, you can specify a compression factor. The value must be between 0 and 100. The value cannot be greater than the default compression already set on the original tile. For example, if the default value is 75, the value of compressionQuality must be between 0 and 75. A value greater than 75 in this example will attempt to up sample an already compressed tile and will further degrade the quality of tiles. area_of_interest optional dictionary, Polygon. The area_of_interest polygon allows exporting tiles within the specified polygon areas. This parameter supersedes the exportExtent parameter. Example: { “features”: [{“geometry”:{“rings”:[[[-100,35], [-100,45],[-90,45],[-90,35],[-100,35]]], “spatialReference”:{“wkid”:4326}}}]} asynchronous optional boolean. Default False, this value ensures the returns are returned to the user instead of the user having the check the job status manually.
Returns

path to download file is asynchronous is False. If True, a dictionary is returned.

find(search_text, layers, contains=True, search_fields=None, sr=None, layer_defs=None, return_geometry=True, max_offset=None, precision=None, dynamic_layers=None, return_z=False, return_m=False, gdb_version=None, return_unformatted=False, return_field_name=False, transformations=None, map_range_values=None, layer_range_values=None, layer_parameters=None, **kwargs)

performs the map service find operation

 Argument Description search_text required string.The search string. This is the text that is searched across the layers and fields the user specifies. layers optional string. The layers to perform the identify operation on. There are three ways to specify which layers to identify on: top: Only the top-most layer at the specified location. visible: All visible layers at the specified location. all: All layers at the specified location. contains optional boolean. If false, the operation searches for an exact match of the search_text string. An exact match is case sensitive. Otherwise, it searches for a value that contains the search_text provided. This search is not case sensitive. The default is true. search_fields optional string. List of field names to look in. sr optional dict, string, or SpatialReference. The well-known ID of the spatial reference of the input and output geometries as well as the map_extent. If sr is not specified, the geometry and the map_extent are assumed to be in the spatial reference of the map, and the output geometries are also in the spatial reference of the map. layer_defs optional dict. Allows you to filter the features of individual layers in the exported map by specifying definition expressions for those layers. Definition expression for a layer that is published with the service will be always honored. return_geometry optional boolean. If true, the resultset will include the geometries associated with each result. The default is true. max_offset optional integer. This option can be used to specify the maximum allowable offset to be used for generalizing geometries returned by the identify operation. precision optional integer. This option can be used to specify the number of decimal places in the response geometries returned by the identify operation. This applies to X and Y values only (not m or z-values). dynamic_layers optional dict. Use dynamicLayers property to reorder layers and change the layer data source. dynamicLayers can also be used to add new layer that was not defined in the map used to create the map service. The new layer should have its source pointing to one of the registered workspaces that was defined at the time the map service was created. The order of dynamicLayers array defines the layer drawing order. The first element of the dynamicLayers is stacked on top of all other layers. When defining a dynamic layer, source is required. return_z optional boolean. If true, Z values will be included in the results if the features have Z values. Otherwise, Z values are not returned. The default is false. return_m optional boolean.If true, M values will be included in the results if the features have M values. Otherwise, M values are not returned. The default is false. gdb_version optional string. Switch map layers to point to an alternate geodatabase version. return_unformatted optional boolean. If true, the values in the result will not be formatted i.e. numbers will returned as is and dates will be returned as epoch values. return_field_name optional boolean. If true, field names will be returned instead of field aliases. transformations optional list. Use this parameter to apply one or more datum transformations to the map when sr is different than the map service’s spatial reference. It is an array of transformation elements. map_range_values optional list. Allows you to filter features in the exported map from all layer that are within the specified range instant or extent. layer_range_values optional dictionary. Allows you to filter features for each individual layer that are within the specified range instant or extent. Note: Check range infos at the layer resources for the available ranges. layer_parameters optional list. Allows you to filter the features of individual layers in the exported map by specifying value(s) to an array of pre-authored parameterized filters for those layers. When value is not specified for any parameter in a request, the default value, that is assigned during authoring time, gets used instead.
Returns

dictionary

classmethod fromitem(item)

Returns the layer at the specified index from a layer item.

 Argument Description item Required string. An item ID representing a layer. index Optional int. The index of the layer amongst the item’s layers
Returns

The layer at the specified index.

generate_kml(save_location, name, layers, options='composite')

The generateKml operation is performed on a map service resource. The result of this operation is a KML document wrapped in a KMZ file. The document contains a network link to the KML Service endpoint with properties and parameters you specify.

 Argument Description save_location required string. Save folder. name The name of the resulting KML document. This is the name that appears in the Places panel of Google Earth. layers required string. the layers to perform the generateKML operation on. The layers are specified as a comma-separated list of layer ids. options required string. The layer drawing options. Based on the option chosen, the layers are drawn as one composite image, as separate images, or as vectors. When the KML capability is enabled, the ArcGIS Server administrator has the option of setting the layer operations allowed. If vectors are not allowed, then the caller will not be able to get vectors. Instead, the caller receives a single composite image. values: composite, separateImage, nonComposite
Returns

string to file path

identify(geometry, map_extent, image_display, geometry_type='Point', sr=None, layer_defs=None, time_value=None, time_options=None, layers='all', tolerance=None, return_geometry=True, max_offset=None, precision=4, dynamic_layers=None, return_z=False, return_m=False, gdb_version=None, return_unformatted=False, return_field_name=False, transformations=None, map_range_values=None, layer_range_values=None, layer_parameters=None, **kwargs)

The identify operation is performed on a map service resource to discover features at a geographic location. The result of this operation is an identify results resource. Each identified result includes its name, layer ID, layer name, geometry and geometry type, and other attributes of that result as name-value pairs.

Returns

dictionary

property item_info

returns the service’s item’s infomation

property kml

returns the KML file for the layer

property legend

The legend resource represents a map service’s legend. It returns the legend information for all layers in the service. Each layer’s legend information includes the symbol images and labels for each symbol. Each symbol is an image of size 20 x 20 pixels at 96 DPI. Additional information for each layer such as the layer ID, name, and min and max scales are also included.

The legend symbols include the base64 encoded imageData as well as a url that could be used to retrieve the image from the server.

property manager
property metadata

returns the service’s XML metadata file

thumbnail(out_path=None)

## MapImageLayerManager¶

class arcgis.mapping.MapImageLayerManager(url, gis=None, map_img_lyr=None)

Bases: arcgis.gis._GISResource

allows administration (if access permits) of ArcGIS Online hosted map image layers. A map image layer offers access to map and layer content.

cancel_job(job_id)

The cancel job operation supports cancelling a job while update tiles is running from a hosted feature service. The result of this operation is a response indicating success or failure with error code and description.

Inputs:

job_id - job id to cancel

delete_tiles(levels, extent=None)

Deletes tiles for the current cache

 Argument Description extent optional dictionary, If specified, the tiles within this extent will be deleted or will be deleted based on the service’s full extent. Example: 6224324.092137296,487347.5253569535, 11473407.698535524,4239488.369818687 the minx, miny, maxx, maxy values or, {“xmin”:6224324.092137296,”ymin”:487347.5253569535, “xmax”:11473407.698535524,”ymax”:4239488.369818687, “spatialReference”:{“wkid”:102100}} the JSON representation of the Extent object. levels required string, The level to delete. Example, 0-5,10,11-20 or 1,2,3 or 0-5
Returns

dictionary

edit_tile_service(service_definition=None, min_scale=None, max_scale=None, source_item_id=None, export_tiles_allowed=False, max_export_tile_count=100000)

This operation updates a Tile Service’s properties

Inputs:

service_definition - updates a service definition min_scale - sets the services minimum scale for caching max_scale - sets the service’s maximum scale for caching source_item_id - The Source Item ID is the GeoWarehouse Item ID of the map service export_tiles_allowed - sets the value to let users export tiles max_export_tile_count - sets the maximum amount of tiles to be exported

from a single call.

import_tiles(item, levels=None, extent=None, merge=False, replace=False)
 Argument Description item Required ItemId or Item. The TPK file’s item id. This TPK file contains to-be-extracted bundle files which are then merged into an existing cache service. levels Optional String / List of integers, The level of details to update. Example: “1,2,10,20” or [1,2,10,20] extent Optional String / Dict. The area to update as Xmin, YMin, XMax, YMax example: “-100,-50,200,500” or {‘xmin’:100, ‘ymin’:200, ‘xmax’:105, ‘ymax’:205} merge Optional Boolean. Default is false and applicable to compact cache storage format. It controls whether the bundle files from the TPK file are merged with the one in the existing cached service. Otherwise, the bundle files are overwritten. replace Optional Boolean. Default is false, applicable to compact cache storage format and used when merge=true. It controls whether the new tiles will replace the existing ones when merging bundles.
Returns

Dict

job_statistics(job_id)

Returns the job statistics for the given jobId

refresh(service_definition=True)

The refresh operation refreshes a service, which clears the web server cache for the service.

property rerun_job

The rerun job operation supports re-running a canceled job from a hosted map service. The result of this operation is a response indicating success or failure with error code and description.

 Argument Description code required string, parameter used to re-run a given jobs with a specific error code: ALL | ERROR | CANCELED job_id required string, job to reprocess
Returns

boolean or dictionary

update_tiles(levels=None, extent=None)

The starts tile generation for ArcGIS Online. The levels of detail and the extent are needed to determine the area where tiles need to be rebuilt.

..Note: This operation is for ArcGIS Online only.

 Argument Description levels Optional String / List of integers, The level of details to update. Example: “1,2,10,20” or [1,2,10,20] extent Optional String / Dict. The area to update as Xmin, YMin, XMax, YMax example: “-100,-50,200,500” or {‘xmin’:100, ‘ymin’:200, ‘xmax’:105, ‘ymax’:205}
Returns

Dictionary. If the product is not ArcGIS Online tile service, the result will be None.

## VectorTileLayer¶

class arcgis.mapping.VectorTileLayer(url, gis=None)
classmethod fromitem(item)

Returns the layer at the specified index from a layer item.

 Argument Description item Required string. An item ID representing a layer. index Optional int. The index of the layer amongst the item’s layers
Returns

The layer at the specified index.

property info

This returns relative paths to a list of resource files

property styles
tile_fonts(fontstack, stack_range)

This resource returns glyphs in PBF format. The template url for this fonts resource is represented in Vector Tile Style resource.

tile_sprite(out_format='sprite.json')

This resource returns sprite image and metadata

vector_tile(level, row, column)

This resource represents a single vector tile for the map. The bytes for the tile at the specified level, row and column are returned in PBF format. If a tile is not found, an error is returned.

## SceneLayer¶

class arcgis.mapping.SceneLayer(url, gis=None)

Represents a Web scene layer. Web scene layers are cached web layers that are optimized for displaying a large amount of 2D and 3D features. You can use scene layers to represent 3D points, point clouds, 3D objects and integrated mesh layers.

 Argument Description url Required string, specify the url ending in /SceneServer/ gis Optional GIS object. If not specified, the active GIS connection is used.
# USAGE EXAMPLE 1: Instantiating a SceneLayer object

from arcgis.mapping import SceneLayer
s_layer = SceneLayer(url='https://your_portal.com/arcgis/rest/services/service_name/SceneServer/')

type(s_layer)
>> arcgis.mapping._types.SceneLayer

print(s_layer.properties.layers[0].name)


## export_map¶

arcgis.mapping.export_map(web_map_as_json: str = None, format: str = 'PDF', layout_template: str = 'MAP_ONLY', gis=None)

This function takes the state of the web map(for example, included services, layer visibility settings, client-side graphics, and so forth) and returns either (a) a page layout or (b) a map without page surrounds of the specified area of interest in raster or vector format. The input for this function is a piece of text in JavaScript object notation (JSON) format describing the layers, graphics, and other settings in the web map. The JSON must be structured according to the WebMap specification in the ArcGIS HelpThis tool is shipped with ArcGIS Server to support web services for printing, including the preconfigured service named PrintingTools. Parameters:

web_map_as_json: Web Map as JSON (str). Required parameter. A JSON representation of the state of the map to be exported as it appears in the web application. See the WebMap specification in the ArcGIS Help to understand how this text should be formatted. The ArcGIS web APIs (for JavaScript, Flex, Silverlight, etc.) allow developers to easily get this JSON string from the map.

format: Format (str). Optional parameter. The format in which the map image for printing will be delivered. The following strings are accepted.For example:PNG8 (default if the parameter is left blank)PDFPNG32JPGGIFEPSSVGSVGZ

Choice list:[‘PDF’, ‘PNG32’, ‘PNG8’, ‘JPG’, ‘GIF’, ‘EPS’, ‘SVG’, ‘SVGZ’]

layout_template: Layout Template (str). Optional parameter. Either a name of a template from the list or the keyword MAP_ONLY. When MAP_ONLY is chosen or an empty string is passed in, the output map does not contain any page layout surroundings (for example title, legends, scale bar, and so forth)

Choice list:[‘A3 Landscape’, ‘A3 Portrait’, ‘A4 Landscape’, ‘A4 Portrait’, ‘Letter ANSI A Landscape’, ‘Letter ANSI A Portrait’, ‘Tabloid ANSI B Landscape’, ‘Tabloid ANSI B Portrait’, ‘MAP_ONLY’]

gis: Optional, the GIS on which this tool runs. If not specified, the active GIS is used.

Returns:

output_file - Output File as a DataFile

## get_layout_templates¶

arcgis.mapping.get_layout_templates(gis=None) → str

This function returns the content of the GIS’s layout templates formatted as dict.

Parameters:

gis: Optional, the GIS on which this tool runs. If not specified, the active GIS is used.

Returns:

output_json - layout templates as Python dict

## Symbology¶

Generates Symbol Types

arcgis.mapping.symbol.create_symbol(geometry_type, symbol_type=None, symbol_style=None, colors=None, **kwargs)

Generates a Symbol from a given set of Paramters

This method creates either a Picture, Text, Cartographic, or Simple Symbol based on a given set of parameters. Each symbol type has a specific set of parameters that are excepted. There is a simplified input definition similar to matplotlib.

 Required Argument Description geometry_type required string. This can be point, line, polygon, or multipoint. It helps to ensure that the symbol created will be supported by that geometry type.
 Optional Argument Description symbol_type optional string. This is the type of symbol the user needs to create. Valid inputs are: simple, picture, text, or carto. The default is simple. symbol_style optional string. This is the symbology used by the geometry. For example ‘s’ for a Line geometry is a solid line. And ‘-‘ is a dash line. Point Symbols ‘o’ - Circle (default) ‘+’ - Cross ‘D’ - Diamond ‘s’ - Square ‘x’ - X Polyline Symbols ‘s’ - Solid (default) ‘-‘ - Dash ‘-.’ - Dash Dot ‘-..’ - Dash Dot Dot ‘.’ - Dot ‘–’ - Long Dash ‘–.’ - Long Dash Dot ‘n’ - Null ‘s-‘ - Short Dash ‘s-.’ - Short Dash Dot ‘s-..’ - Short Dash Dot Dot ‘s.’ - Short Dot Polygon Symbols ‘s’ - Solid Fill (default) ‘’ - Backward Diagonal ‘/’ - Forward Diagonal ‘|’ - Vertical Bar ‘-‘ - Horizontal Bar ‘x’ - Diagonal Cross ‘+’ - Cross colors optional string or list. This is the color scheme a user can provide if the exact color is not needed, or a user can provide a list with the color defined as: [red, green blue, alpha]. The values red, green, blue are from 0-255 and alpha is a float value from 0 - 1. The default value is ‘jet’ color scheme. cstep optional integer. If provided, its the color location on the color scheme.

Simple Symbols

This is a list of optional parameters that can be given for point, line or polygon geometries.

 Argument Description marker_size optional float. Numeric size of the symbol given in points. marker_angle optional float. Numeric value used to rotate the symbol. The symbol is rotated counter-clockwise. For example, The following, angle=-30, in will create a symbol rotated -30 degrees counter-clockwise; that is, 30 degrees clockwise. marker_xoffset Numeric value indicating the offset on the x-axis in points. marker_yoffset Numeric value indicating the offset on the y-axis in points. line_width optional float. Numeric value indicating the width of the line in points outline_style Optional string. For polygon point, and line geometries , a customized outline type can be provided. Allowed Styles: ‘s’ - Solid (default) ‘-‘ - Dash ‘-.’ - Dash Dot ‘-..’ - Dash Dot Dot ‘.’ - Dot ‘–’ - Long Dash ‘–.’ - Long Dash Dot ‘n’ - Null ‘s-‘ - Short Dash ‘s-.’ - Short Dash Dot ‘s-..’ - Short Dash Dot Dot ‘s.’ - Short Dot outline_color optional string or list. This is the same color as the colors property, but specifically applies to the outline_color.

Picture Symbol

This type of symbol only applies to Points, MultiPoints and Polygons.

 Argument Description marker_angle Numeric value that defines the number of degrees ranging from 0-360, that a marker symbol is rotated. The rotation is from East in a counter-clockwise direction where East is the 0 axis. marker_xoffset Numeric value indicating the offset on the x-axis in points. marker_yoffset Numeric value indicating the offset on the y-axis in points. height Numeric value used if needing to resize the symbol. Specify a value in points. If images are to be displayed in their original size, leave this blank. width Numeric value used if needing to resize the symbol. Specify a value in points. If images are to be displayed in their original size, leave this blank. url String value indicating the URL of the image. The URL should be relative if working with static layers. A full URL should be used for map service dynamic layers. A relative URL can be dereferenced by accessing the map layer image resource or the feature layer image resource. image_data String value indicating the base64 encoded data. xscale Numeric value indicating the scale factor in x direction. yscale Numeric value indicating the scale factor in y direction. outline_color optional string or list. This is the same color as the colors property, but specifically applies to the outline_color. outline_style Optional string. For polygon point, and line geometries , a customized outline type can be provided. Allowed Styles: ‘s’ - Solid (default) ‘-‘ - Dash ‘-.’ - Dash Dot ‘-..’ - Dash Dot Dot ‘.’ - Dot ‘–’ - Long Dash ‘–.’ - Long Dash Dot ‘n’ - Null ‘s-‘ - Short Dash ‘s-.’ - Short Dash Dot ‘s-..’ - Short Dash Dot Dot ‘s.’ - Short Dot outline_color optional string or list. This is the same color as the colors property, but specifically applies to the outline_color. line_width optional float. Numeric value indicating the width of the line in points

Text Symbol

This type of symbol only applies to Points, MultiPoints and Polygons.

 Argument Description font_decoration The text decoration. Must be one of the following values: - line-through - underline - none font_family Optional string. The font family. font_size Optional float. The font size in points. font_style Optional string. The text style. - italic - normal - oblique font_weight Optional string. The text weight. Must be one of the following values: - bold - bolder - lighter - normal background_color optional string/list. Background color is represented as a four-element array or string of a color map. halo_color Optional string/list. Color of the halo around the text. The default is None. halo_size Optional integer/float. The point size of a halo around the text symbol. horizontal_alignment optional string. One of the following string values representing the horizontal alignment of the text. Must be one of the following values: - left - right - center - justify kerning optional boolean. Boolean value indicating whether to adjust the spacing between characters in the text string. line_color optional string/list. Outline color is represented as a four-element array or string of a color map. line_width optional integer/float. Outline size. marker_angle optional int. A numeric value that defines the number of degrees (0 to 360) that a text symbol is rotated. The rotation is from East in a counter-clockwise direction where East is the 0 axis. marker_xoffset optional int/float.Numeric value indicating the offset on the x-axis in points. marker_yoffset optional int/float.Numeric value indicating the offset on the x-axis in points. right_to_left optional boolean. Set to true if using Hebrew or Arabic fonts. rotated optional boolean. Boolean value indicating whether every character in the text string is rotated. text Required string. Text Value to display next to geometry. vertical_alignment Optional string. One of the following string values representing the vertical alignment of the text. Must be one of the following values: - top - bottom - middle - baseline

Cartographic Symbol

This type of symbol only applies to line geometries.

 Argument Description line_width optional float. Numeric value indicating the width of the line in points cap Optional string. The cap style. join Optional string. The join style. miter_limit Optional string. Size threshold for showing mitered line joins.
Returns

Dictionary

arcgis.mapping.symbol.display_colormaps(colors=None)

Displays a visual colormaps in order to assist users in selecting a color scheme for the data they wish to display on a map, or in a web map.

This is a variation of http://matplotlib.org/examples/color/colormaps_reference.html

arcgis.mapping.symbol.show_styles(geometry_type)

Returns the available styles for a given geometry type as a Pandas dataframe

## generate_renderer¶

arcgis.mapping.renderer.generate_renderer(geometry_type, sdf_or_series=None, label=None, render_type=None, colors=None, **symbol_args)

Generates the Renderer JSON

Explicit Argument

Description

geometry_type

required string. The allowed values are: Point, Polyline, Polygon, or Raster. This required parameter is used to help ensure the requested renderer is valid for the specific type of geometry.

 Geometry Supported Renderer Types Point simple, unique, class breaks, heat map, temporal Polyline simple, unique, class break Polygon simple, unique, class break, dot density Raster stretched

The table above provides a quick summary based on the allowed renderer types based on the geometry.

sdf_or_series

optional SpatialDataFrame/Pandas Series/GeoSeries. The spatial dataset to render.

label

optional string. Name of the layer in the TOC/Legend

render_type

optional string. Determines the type of renderer to use for the provided dataset. The default is ‘s’ which is for simple renderers.

Allowed values:

• ‘s’ - is a simple renderer that uses one symbol only.

• ‘u’ - unique renderer symbolizes features based on one

or more matching string attributes.

• ‘u-a’ - unique renderer symbolizes features based on

• ‘c’ - A class breaks renderer symbolizes based on the

value of some numeric attribute.

• ‘h’ - heatmap renders point data into a raster

visualization that emphasizes areas of higher density or weighted values.

• ‘d’ - dot density renderer

colors

optional string/list. Color mapping. For simple renderer, just provide a string. For more robust renderers like unique renderer, a list can be given.

** Simple Renderer**

A simple renderer is a renderer that uses one symbol only.

 Optional Argument Description symbol_type optional string. This is the type of symbol the user needs to create. Valid inputs are: simple, picture, text, or carto. The default is simple. symbol_style optional string. This is the symbology used by the geometry. For example ‘s’ for a Line geometry is a solid line. And ‘-‘ is a dash line. Point Symbols ‘o’ - Circle (default) ‘+’ - Cross ‘D’ - Diamond ‘s’ - Square ‘x’ - X Polyline Symbols ‘s’ - Solid (default) ‘-‘ - Dash ‘-.’ - Dash Dot ‘-..’ - Dash Dot Dot ‘.’ - Dot ‘–’ - Long Dash ‘–.’ - Long Dash Dot ‘n’ - Null ‘s-‘ - Short Dash ‘s-.’ - Short Dash Dot ‘s-..’ - Short Dash Dot Dot ‘s.’ - Short Dot Polygon Symbols ‘s’ - Solid Fill (default) ‘’ - Backward Diagonal ‘/’ - Forward Diagonal ‘|’ - Vertical Bar ‘-‘ - Horizontal Bar ‘x’ - Diagonal Cross ‘+’ - Cross description Description of the renderer. rotation_expression A constant value or an expression that derives the angle of rotation based on a feature attribute value. When an attribute name is specified, it’s enclosed in square brackets. rotation_type String value which controls the origin and direction of rotation on point features. If the rotationType is defined as arithmetic, the symbol is rotated from East in a counter-clockwise direction where East is the 0 degree axis. If the rotationType is defined as geographic, the symbol is rotated from North in a clockwise direction where North is the 0 degree axis. Must be one of the following values: arithmetic geographic visual_variables An array of objects used to set rendering properties.

Heatmap Renderer

The HeatmapRenderer renders point data into a raster visualization that emphasizes areas of higher density or weighted values.

 Optional Argument Description blur_radius The radius (in pixels) of the circle over which the majority of each point’s value is spread. field This is optional as this renderer can be created if no field is specified. Each feature gets the same value/importance/weight or with a field where each feature is weighted by the field’s value. max_intensity The pixel intensity value which is assigned the final color in the color ramp. min_intensity The pixel intensity value which is assigned the initial color in the color ramp. ratio A number between 0-1. Describes what portion along the gradient the colorStop is added.

Predominance/Unique Renderer

This renderer symbolizes features based on one or more matching string attributes.

 Optional Argument Description background_fill_symbol A symbol used for polygon features as a background if the renderer uses point symbols, e.g. for bivariate types & size rendering. Only applicable to polygon layers. PictureFillSymbols can also be used outside of the Map Viewer for Size and Predominance and Size renderers. default_label Default label for the default symbol used to draw unspecified values. default_symbol Symbol used when a value cannot be matched. field1, field2, field3 Attribute field renderer uses to match values. field_delimiter String inserted between the values if multiple attribute fields are specified. rotation_expression A constant value or an expression that derives the angle of rotation based on a feature attribute value. When an attribute name is specified, it’s enclosed in square brackets. Rotation is set using a visual variable of type rotation info with a specified field or value expression property. rotation_type String property which controls the origin and direction of rotation. If the rotation type is defined as arithmetic the symbol is rotated from East in a counter-clockwise direction where East is the 0 degree axis. If the rotation type is defined as geographic, the symbol is rotated from North in a clockwise direction where North is the 0 degree axis. Must be one of the following values: arithmetic geographic arcade_expression An Arcade expression evaluating to either a string or a number. arcade_title The title identifying and describing the associated Arcade expression as defined in the valueExpression property. visual_variables An array of objects used to set rendering properties. unique_values Optional list of dictionaries. If you want to define the unique values listed in the renderer, specify the list using this variable. The format of each unique value is as follows: {“value” : , “label” :

Class Breaks Renderer

A class breaks renderer symbolizes based on the value of some numeric attribute.

 Optional Argument Description background_fill_symbol A symbol used for polygon features as a background if the renderer uses point symbols, e.g. for bivariate types & size rendering. Only applicable to polygon layers. PictureFillSymbols can also be used outside of the Map Viewer for Size and Predominance and Size renderers. default_label Default label for the default symbol used to draw unspecified values. default_symbol Symbol used when a value cannot be matched. method Determines the classification method that was used to generate class breaks. Must be one of the following values: esriClassifyDefinedInterval esriClassifyEqualInterval esriClassifyGeometricalInterval esriClassifyNaturalBreaks esriClassifyQuantile esriClassifyStandardDeviation esriClassifyManual field Attribute field used for renderer. min_value The minimum numeric data value needed to begin class breaks. normalization_field Used when normalizationType is field. The string value indicating the attribute field by which the data value is normalized. normalization_total Used when normalizationType is percent-of-total, this number property contains the total of all data values. normalization_type Determine how the data was normalized. Must be one of the following values: esriNormalizeByField esriNormalizeByLog esriNormalizeByPercentOfTotal rotation_expression A constant value or an expression that derives the angle of rotation based on a feature attribute value. When an attribute name is specified, it’s enclosed in square brackets. rotation_type A string property which controls the origin and direction of rotation. If the rotation_type is defined as arithmetic, the symbol is rotated from East in a couter-clockwise direction where East is the 0 degree axis. If the rotationType is defined as geographic, the symbol is rotated from North in a clockwise direction where North is the 0 degree axis. Must be one of the following values: arithmetic geographic arcade_expression An Arcade expression evaluating to a number. arcade_title The title identifying and describing the associated Arcade expression as defined in the arcade_expression property. visual_variables An object used to set rendering options.

Dot Density Renderer

A class breaks renderer symbolizes based on the value of some numeric attribute.

Optional Argument

Description

attributes

Required List. The fields, labels and colors to add to the web map. The list consists of dictionarys with the following keys:

 Argument Description field Required String. Name of the dataset field label Required String. Descriptive name of the field. color Required List. A integer array consisting of R,G,B,A values

If the field name is not in the SeDF, then an error will be raised on renderering.

dot_value

Required Float. The unit value of what 1 dot equals.

ref_scale

Required Int. The reference scale of the dots.

unit

Required string. A label of the unit which each dot means.

blend_dots

Optional boolean. Allows for the dots to overlap.

size

Optional float. The size of the dot on the density map.

background

Optional List. A color background as a list of [r,g,b,a] values. The default is no background [0,0,0,0].

Returns

dict

## visual_variables¶

arcgis.mapping.renderer.visual_variables(geometry_type, sdf_or_list, **kwargs)

a function to create visual variables

This operation allows developers to take a deep dive into developing custom renderer. Here a user/developer can create transparancy, size information, and other rules to improve the overall feel and look of spatial information on a map.

Each type of information is detailed in the tables below.

 arguements description ri_field Attribute field used for setting the rotation of a symbol if no ri_expression is provided. ri_type Defines the origin and direction of rotation depending on how the angle of rotation was measured. Possible values are geographic which rotates the symbol from the north in a clockwise direction and arithmetic which rotates the symbol from the east in a counter-clockwise direction. Must be one of the following values: geographic arithmetic ri_expression An Arcade expression evaluating to a number. ri_expression_title The title identifying and describing the ri_expression