color

See also

Styles and data visualization

Method Overview

Return Type	Summary	Object
Promise<AgeRendererResult>	Generates a continuous color Renderer representing the age of features based on one or more fields.	color
Promise<ClassBreaksRendererResult>	Generates a ClassBreaksRenderer that may be applied directly to the layer used to call this method.	color
Promise<ContinuousRendererResult>	Generates a Renderer that may be applied directly to the layer used to call this method.	color
Promise<PCContinuousRendererResult>	Generates a PointCloudStretchRenderer with a color scheme best-suited for the view's background based on statistics returned from a given field of a PointCloudLayer.	color
Promise<PCTrueColorRendererResult>	Generates a PointCloudRGBRenderer based on the `RGB` field of a given PointCloudLayer.	color
Promise<VisualVariableResult>	This method generates a color visual variable with default stops that are optimally chosen based on the statistics queried for the indicated field or expression and colors determined by the view's background.	color

Method Details

createAgeRenderer Method createAgeRenderer(params){Promise<AgeRendererResult>} Since: ArcGIS Maps SDK for JavaScript 4.9 color since 4.2, createAgeRenderer added at 4.9.

Generates a continuous color Renderer representing the age of features based on one or more fields. The age of a feature is calculated based on a given startTime and endTime, one of which must be a date field in the input layer. This method generates an Arcade expression and calculates statistics on the output of the expression to accomplish this. The resulting renderer contains a continuous color visual variable that maps optimal colors based on the view's background to data values based on the resulting statistics of the expression.

You are required to provide a layer, view, startTime, and endTime to generate this renderer. Optionally, you can set a unit and a theme for the visualization. Other options are provided for convenience for more involved custom visualization authoring applications. For example, if you already generated statistics in another operation, you can pass the statistics object to the statistics parameter to avoid making an extra call to the server.

Parameters

Specification

params Object

Input parameters for generating a continuous color visualization of age for time data returned from start and/or end date field(s). See the table below for details of each parameter.

Specification

The layer for which the visualization is generated.

view View

The view where the input layer is rendered. This method inspects the view's background (i.e. basemap, web map background, or view container) to determine optimal colors for the output renderer.

startTime Date|String|Number

The name of the field, or a date value representing the start time in the age calculation. If a date value is specified, then the endTime parameter must reference a Date field in the layer.

endTime Date|String|Number

The name of the field, or a date value representing the end time in the age calculation. If a date value is specified, then the startTime parameter must reference a Date field in the layer.

unit String

optional

The time unit used to calculate the difference between endTime and startTime. If a unit is not specified, then a suggested unit is determined based on the spread and distribution of the data.

maxValue Number

optional

Sets a maximum age for the visualization. Even if data exists above this value, only statistics will be calculated for values between the minValue and maxValue. Added at version 4.15.

minValue Number

optional

Sets a minimum age for the visualization. Even if data exists below this value, only statistics will be calculated for values between the minValue and maxValue. Added at version 4.15.

theme String

optional

Default Value: high-to-low

Determines which values will be emphasized in the continuous ramp and the map. Possible values are listed below.

Value	Description	Example
high-to-low	High values are emphasized with strong colors. The data values above one standard deviation from the mean are assigned the strongest color. Data values below one standard deviation from the mean are assigned the weakest color. All other values are interpolated.
above	High values are emphasized with strong colors. The max data value is assigned the strongest color. The middle or average data value is assigned the weakest color. All other values are interpolated.
below	Low values are emphasized with strong colors. The min data value is assigned the strongest color. The middle or average data value is assigned the weakest color. All other values are interpolated.
above-and-below	Values centered on a meaningful data value (e.g. the average) are visualized with weak colors while other values are emphasized with strong colors. All other values are interpolated.
centered-on	Values centered on a meaningful data value (e.g. the average) are emphasized with strong colors while other values are visualized with weak colors. All other values are interpolated.
extremes	High and low values are emphasized with strong colors. All others are visualized with weak colors. All other values are interpolated.

outlineOptimizationEnabled Boolean

optional

Default Value: false

For polygon layers only. Indicates whether the polygon outline width should vary based on view scale. When set, a valid MapView instance must be provided in the view parameter. This option is not supported for 3D SceneViews.

sizeOptimizationEnabled Boolean

optional

Default Value: false

For point and polyline layers only. Indicates whether symbol sizes should vary based on view scale. When set, a valid MapView instance must be provided in the view parameter. This option is not supported for 3D SceneViews.

legendOptions Object

optional

Provides options for modifying Legend properties describing the visualization.

Specification

title String

optional

The title used to represent the age color ramp in the Legend.

showLegend Boolean

optional

Indicates whether to include the age renderer in the legend.

statistics SummaryStatisticsResult

optional

A statistics object generated from the summaryStatistics function. The createAgeRenderer() method generates an Arcade expression and executes a statistics query against the layer for the result of the expression. If statistics for the expression have already been generated, then pass the object here to avoid making a second statistics query.

colorScheme ColorScheme

optional

In authoring apps, the user may select a pre-defined color scheme. Pass the scheme object to this property to avoid getting one based on a theme and the view's background.

symbolType String

optional

Default Value: 2d

The type of symbol to generate. This depends on the view in which you are working and the desired visualization. This parameter does not need to be specified for layers with a mesh geometry type. Possible values are described below.

Value	Description
2d	Generates a visualization using 2D symbols such as SimpleMarkerSymbol, SimpleLineSymbol, or SimpleFillSymbol. Use this option if generating a visualization for data in a MapView.
3d-flat	Generates a visualization using 3D symbols with flat symbol layers such as IconSymbol3DLayer, LineSymbol3DLayer, or FillSymbol3DLayer. Use this option if generating a 2D visualization for data in a SceneView.
3d-volumetric	Generates a visualization using 3D symbols with volumetric symbol layers such as ObjectSymbol3DLayer, PathSymbol3DLayer, or ExtrudeSymbol3DLayer. Use this option if generating a 3D visualization for data in a SceneView. A SceneView instance must be provided to the `view` parameter if this option is used.
3d-volumetric-uniform	Generates a visualization using uniformly sized 3D symbols with volumetric symbol layers. Use this option if generating a 3D visualization for data in a SceneView and the symbol should be sizes uniformly, for example with spheres. A SceneView instance must be provided to the `view` parameter if this option is used.

Possible Values:"2d"|"3d-flat"|"3d-volumetric"|"3d-volumetric-uniform"

defaultSymbolEnabled Boolean

optional

Default Value: true

Enables the defaultSymbol on the renderer and assigns it to features with no value.

colorMixMode String

optional

Default Value: replace

This option only applies to generating renderers for mesh SceneLayers. Specifies how the symbol's color is applied to the geometry color/texture. See the documentation in FillSymbol3DLayer.material for more context. See the table below for possible values.

Value	Description
tint	Applies the symbol `color` to the desaturated geometry/texture color.
replace	Removes the geometry/texture color and applies the symbol `color`.
multiply	Multiplies geometry/texture color value with the symbol `color` value. The result is a darker color. Multiplying with white keeps the geometry color the same.

signal AbortSignal

optional

Allows for cancelable requests. If canceled, the promise will be rejected with an error named AbortError. See also AbortController.

Returns

Type	Description
Promise<AgeRendererResult>	Resolves to an instance of AgeRendererResult.

Examples

const layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/311_Service_Requests_from_2015_50k/FeatureServer/0"
});

// visualization based age of incidents closed passed their due date
// or the number of days an incident was overdue at the time of closure.

const ageParams = {
  layer: layer,
  view: view,
  startTime: "Due_Date",
  endTime: "Closed_Date",
  unit: "days",
  theme: "above-and-below"
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createAgeRenderer(ageParams)
  .then(function(response){
    layer.renderer = response.renderer;
  });

const layer = new CSVLayer({
  url: "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_week.csv",
  copyright: "USGS Earthquakes"
});

// visualization based off current age of incident
const ageParams = {
  layer: layer,
  view: view,
  startTime: "time",
  endTime: Date.now(),
  legendOptions: {
    title: "Time since earthquake struck"
  }
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createAgeRenderer(ageParams)
  .then(function(response){
    layer.renderer = response.renderer;
  });

createClassBreaksRenderer Method createClassBreaksRenderer(params){Promise<ClassBreaksRendererResult>} Since: ArcGIS Maps SDK for JavaScript 4.6 color since 4.2, createClassBreaksRenderer added at 4.6.

Generates a ClassBreaksRenderer that may be applied directly to the layer used to call this method. The resulting renderer defines the symbol color of each feature based on the value of the given field value. A default color scheme is determined based on the view's background. Depending on the classificationMethod, class breaks (or data ranges) are generated based on the statistics of the data. Each feature is assigned a color based on the class break in which the value of the field falls.

In most cases you will provide a layer, view, field, and classificationMethod to generate this renderer. This is a scenario in which the statistics of the data aren't well known and the user doesn't know what colors to use in the visualization. You can also use a valueExpression instead of a field to visualize features based on a value returned from a script executed at runtime.

The other options are provided for convenience for more involved custom visualization authoring applications.

Parameters

Specification

params Object

Input parameters for generating a classed color visualization based on data returned from a given field or expression. See the table below for details of each parameter.

Specification

The layer for which the visualization is generated.

view View

optional

The view where the input layer is rendered. This method inspects the view's background (i.e. basemap, web map background, or view container) to determine optimal colors for the output renderer. This parameter should always be set in practice, but if not provided this method will assume the generated renderer will display on a light background. This parameter is required when creating renderers using a valueExpression or for renderers intended for display in a SceneView.

field String

optional

The name of the field whose data will be queried for statistics and classified. This property is ignored if a valueExpression is used.

normalizationField String

optional

The name of the field to normalize the values of the given field. Providing a normalization field helps minimize some visualization errors and standardizes the data so all features are visualized with minimal bias due to area differences or count variation. This option is commonly used when visualizing densities.

normalizationType String

optional

Indicates how the data is normalized. The data value obtained from the field is normalized in one of the following ways before it is compared with the class breaks. See the table below for a list of possible values.

Possible Value	Description
field	Divides the `field` value by the value of `normalizationField`. This value is set by default if the `normalizationField` is provided.
log	Computes the base 10 logarithm of the data value. This can be a useful approach for some data distributions because it reduces the influence of very large data values.
percent-of-total	Divides the data value by the sum of all data values then multiplies by 100. Use `normalizationTotal` to define the total value by which to normalize. This value is set by default if the `normalizationTotal` is provided.

With the exception of log normalization, data normalization creates a ratio by dividing two values. When comparing attribute values between features, normalization minimizes the effect of varying map areas and the number of observations. For example, dividing the 18 to 30 year old population by the area of a polygon feature yields a density value that can be compared evenly with other features, regardless of their size.

Possible Values:"field"|"log"|"percent-of-total"

normalizationTotal Number

optional

When normalizationType is percent-of-total, this property contains the total of all data values.

classificationMethod String

optional

Default Value: equal-interval

The classification method used for generating breaks. See the table below for a list of possible values.

Possible Value	Description
equal-interval	Divides the range of attribute values into equal-sized subranges. For example, if you specify three classes for a field whose values range from 0 to 300, this method will create three classes with ranges of 0–100, 101–200, and 201–300. Equal interval is best applied to familiar data ranges, such as percentages and temperature. This method emphasizes the amount of an attribute value relative to other values. For example, it could show if a store is part of the group of stores that make up the top one-third of all sales.
natural-breaks	Groups similar values that maximize the differences between classes. Features are divided into classes whose boundaries are set where there are relatively big differences in the data values. Natural breaks are data-specific classifications and not useful for comparing multiple maps built from different underlying information.
quantile	Assigns the same number of data values to each class. This is well suited to linearly distributed data. Because features are grouped in equal numbers in each class, the resulting map can often be misleading. Similar features can potentially be placed in adjacent classes, or features with widely different values can be put in the same class. You can minimize this distortion by increasing the number of classes.
standard-deviation	Creates class breaks with equal value ranges that are a proportion of the standard deviation. This is usually done at intervals of one, one-half, one-third, or one-fourth standard deviations from the mean.

Possible Values:"equal-interval"|"natural-breaks"|"quantile"|"standard-deviation"

standardDeviationInterval Number

optional

Default Value: 1

If a standard-deviation classification method is used, then this indicates the interval by which to generate class breaks.

Possible Values: 1 | 0.5 | 0.33 | 0.25

numClasses Number

optional

Default Value: 5

The number of class breaks to generate. This is ignored if a standard-deviation classification method is specified.

colorScheme ColorScheme

optional

In authoring apps, the user may select a pre-defined color scheme. Pass the scheme object to this property to avoid getting one based on the view's background.

valueExpression String

optional

An Arcade expression following the specification defined by the Arcade Visualization Profile. Expressions may reference field values using the $feature profile variable and must return a number. This property overrides the field property and therefore is used instead of an input field value.

valueExpressionTitle String

optional

Text describing the value returned from the valueExpression. This is used by the Legend widget.

sqlExpression String

optional

A SQL expression evaluating to a number.

sqlWhere String

optional

A SQL where clause used to filter features for the statistics query. For example, this is useful in situations where you want to avoid dividing by zero as is the case with creating a predominance visualization.

outlineOptimizationEnabled Boolean

optional

Default Value: false

legendOptions Object

optional

Provides options for setting a title to describe a field instead of using the field name. This title will represent the field in the Legend.

Specification

title String

optional

The title used to represent the given field or expression in the Legend.

minValue Number

optional

A minimum value set by the user. Use this in conjunction with maxValue to generate class breaks between lower and upper bounds. This will be the lower bound of the lowest class break.

maxValue Number

optional

A maximum value set by the user. Use this in conjunction with minValue to generate class breaks between lower and upper bounds. This will be the upper bound of the highest class break.

defaultSymbolEnabled Boolean

optional

Default Value: true

Enables the defaultSymbol on the renderer and assigns it to features with no value and features that do not fall within the configured data range.

symbolType String

optional

Default Value: 2d

Value	Description
2d	Generates a visualization using 2D symbols such as SimpleMarkerSymbol, SimpleLineSymbol, or SimpleFillSymbol. Use this option if generating a visualization for data in a MapView.
3d-flat	Generates a visualization using 3D symbols with flat symbol layers such as IconSymbol3DLayer, LineSymbol3DLayer, or FillSymbol3DLayer. Use this option if generating a 2D visualization for data in a SceneView.
3d-volumetric	Generates a visualization using 3D symbols with volumetric symbol layers such as ObjectSymbol3DLayer, PathSymbol3DLayer, or ExtrudeSymbol3DLayer. Use this option if generating a 3D visualization for data in a SceneView. A SceneView instance must be provided to the `view` parameter if this option is used.
3d-volumetric-uniform	Generates a visualization using uniformly sized 3D symbols with volumetric symbol layers. Use this option if generating a 3D visualization for data in a SceneView and the symbol should be sizes uniformly, for example with spheres. A SceneView instance must be provided to the `view` parameter if this option is used.

Possible Values:"2d"|"3d-flat"|"3d-volumetric"|"3d-volumetric-uniform"

colorMixMode String

optional

Default Value: replace

Value	Description
tint	Applies the symbol `color` to the unsaturated geometry/texture color.
replace	Removes the geometry/texture color and applies the symbol `color`.
multiply	Multiplies geometry/texture color value with the symbol `color` value. The result is a darker color. Multiplying with white keeps the geometry color the same.

forBinning Boolean

optional

Indicates whether the generated renderer is for a binning visualization. If true, then the input field(s) in this method should refer to aggregate fields defined in the featureReduction property of the layer.

signal AbortSignal

optional

Allows for cancelable requests. If canceled, the promise will be rejected with an error named AbortError. See also AbortController.

Returns

Type	Description
Promise<ClassBreaksRendererResult>	Resolves to an instance of ClassBreaksRendererResult.

Examples

let layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/counties_politics_poverty/FeatureServer/0"
});

// visualization based on field and normalization field
let colorParams = {
  layer: layer,
  view: view,
  field: "POP_POVERTY",
  normalizationField: "TOTPOP_CY",
  classificationMethod: "quantile",
  numClasses: 4
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createClassBreaksRenderer(colorParams)
  .then(function(response){
    layer.renderer = response.renderer;
  });

let layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/counties_politics_poverty/FeatureServer/0"
});

// visualization based off Arcade expression
let colorParams = {
  layer: layer,
  valueExpression: "($feature.POP_POVERTY / $feature.TOTPOP_CY) * 100",
  view: view,
  sqlWhere: "TOTPOP_CY > 0",
  legendOptions: {
    title: "% of people living in poverty"
  }
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createClassBreaksRenderer(colorParams)
  .then(function(response){
    layer.renderer = response.renderer;
  });

createContinuousRenderer Method createContinuousRenderer(params){Promise<ContinuousRendererResult>}

Generates a Renderer that may be applied directly to the layer used to call this method. The renderer contains a continuous color visual variable that maps optimal colors based on the view's background to specific stop values based on queried statistics from the indicated field or expression.

In most cases you will provide a layer, view, field, and theme to generate this renderer. This is a scenario in which the statistics of the data aren't well known and the user doesn't know what colors to use in the visualization. You can also use a valueExpression instead of a field to visualize features based on a value returned from a script executed at runtime.

Parameters

Specification

params Object

Input parameters for generating a continuous color visualization based on data returned from a given field or expression. See the table below for details of each parameter.

Specification

The layer for which the visualization is generated.

view View

optional

field String

optional

The name of the field whose data will be queried for statistics and used for the basis of the data-driven visualization. This property is ignored if a valueExpression is used.

normalizationField String

optional

theme String

optional

Default Value: high-to-low

Determines which values will be emphasized in the continuous ramp and the map. Possible values are listed below.

Value	Description	Example
high-to-low	High values are emphasized with strong colors. The data values above one standard deviation from the mean are assigned the strongest color. Data values below one standard deviation from the mean are assigned the weakest color. All other values are interpolated.
above	High values are emphasized with strong colors. The max data value is assigned the strongest color. The middle or average data value is assigned the weakest color. All other values are interpolated.
below	Low values are emphasized with strong colors. The min data value is assigned the strongest color. The middle or average data value is assigned the weakest color. All other values are interpolated.
above-and-below	Values centered on a meaningful data value (e.g. the average) are visualized with weak colors while other values are emphasized with strong colors. All other values are interpolated.
centered-on	Values centered on a meaningful data value (e.g. the average) are emphasized with strong colors while other values are visualized with weak colors. All other values are interpolated.
extremes	High and low values are emphasized with strong colors. All others are visualized with weak colors. All other values are interpolated.

colorScheme ColorScheme

optional

In authoring apps, the user may select a pre-defined color scheme. Pass the scheme object to this property to avoid getting one based on a theme and the view's background.

valueExpression String

optional

valueExpressionTitle String

optional

Text describing the value returned from the valueExpression. This is used by the Legend widget.

sqlExpression String

optional

A SQL expression evaluating to a number.

sqlWhere String

optional

outlineOptimizationEnabled Boolean

optional

Default Value: false

sizeOptimizationEnabled Boolean

optional

Default Value: false

legendOptions Object

optional

Provides options for setting a title to a field when an expression is provided instead of a field name. This title will represent the field in the Legend.

Specification

title String

optional

The title used to represent the given field or expression in the Legend.

showLegend Boolean

optional

Indicates whether to describe the renderer in the legend.

statistics SummaryStatisticsResult

optional

A statistics object generated from the summaryStatistics function. If statistics for the field have already been generated, then pass the object here to avoid making a second statistics query to the server.

minValue Number

optional

A custom minimum value set by the user. Use this in conjunction with maxValue to generate statistics between lower and upper bounds. This will be the lowest stop in the returned color visual variable.

maxValue Number

optional

A custom maximum value set by the user. Use this in conjunction with minValue to generate statistics between lower and upper bounds. This will be the uppermost stop in the returned color visual variable.

defaultSymbolEnabled Boolean

optional

Default Value: true

Enables the defaultSymbol on the renderer and assigns it to features with no value and features that do not fall within the configured data range.

symbolType String

optional

Default Value: 2d

Value	Description
2d	Generates a visualization using 2D symbols such as SimpleMarkerSymbol, SimpleLineSymbol, or SimpleFillSymbol. Use this option if generating a visualization for data in a MapView.
3d-flat	Generates a visualization using 3D symbols with flat symbol layers such as IconSymbol3DLayer, LineSymbol3DLayer, or FillSymbol3DLayer. Use this option if generating a 2D visualization for data in a SceneView.
3d-volumetric	Generates a visualization using 3D symbols with volumetric symbol layers such as ObjectSymbol3DLayer, PathSymbol3DLayer, or ExtrudeSymbol3DLayer. Use this option if generating a 3D visualization for data in a SceneView. A SceneView instance must be provided to the `view` parameter if this option is used.
3d-volumetric-uniform	Generates a visualization using uniformly sized 3D symbols with volumetric symbol layers. Use this option if generating a 3D visualization for data in a SceneView and the symbol should be sizes uniformly, for example with spheres. A SceneView instance must be provided to the `view` parameter if this option is used.

Possible Values:"2d"|"3d-flat"|"3d-volumetric"|"3d-volumetric-uniform"

colorMixMode String

optional

Default Value: replace

Value	Description
tint	Applies the symbol `color` to the unsaturated geometry/texture color.
replace	Removes the geometry/texture color and applies the symbol `color`.
multiply	Multiplies geometry/texture color value with the symbol `color` value. The result is a darker color. Multiplying with white keeps the geometry color the same.

forBinning Boolean

optional

signal AbortSignal

optional

Allows for cancelable requests. If canceled, the promise will be rejected with an error named AbortError. See also AbortController.

Returns

Type	Description
Promise<ContinuousRendererResult>	Resolves to an instance of ContinuousRendererResult.

Examples

let layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/counties_politics_poverty/FeatureServer/0"
});

// visualization based on field and normalization field
let colorParams = {
  layer: layer,
  view: view,
  field: "POP_POVERTY",
  normalizationField: "TOTPOP_CY",
  theme: "above-and-below"
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createContinuousRenderer(colorParams)
  .then(function(response){
    layer.renderer = response.renderer;
  });

let layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/counties_politics_poverty/FeatureServer/0"
});

// visualization based off Arcade expression
let colorParams = {
  layer: layer,
  valueExpression: "($feature.POP_POVERTY / $feature.TOTPOP_CY) * 100",
  view: view,
  sqlWhere: "TOTPOP_CY > 0",
  legendOptions: {
    title: "% of people living in poverty"
  }
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createContinuousRenderer(colorParams)
  .then(function(response){
    layer.renderer = response.renderer;
  });

createPCContinuousRenderer Method createPCContinuousRenderer(params){Promise<PCContinuousRendererResult>} Since: ArcGIS Maps SDK for JavaScript 4.5 color since 4.2, createPCContinuousRenderer added at 4.5.

Generates a PointCloudStretchRenderer with a color scheme best-suited for the view's background based on statistics returned from a given field of a PointCloudLayer. All that's required is a layer instance, field name, and basemap id. You can optionally set the size and density of the points to suit the needs of the desired visualization.

Parameters

Specification

params Object

Input parameters for generating a renderer based on the given field of the input layer. See the table below for details of each parameter.

Specification

layer PointCloudLayer

The layer for which the visualization is generated.

field String

The name of the field whose data will be queried for statistics and used for the basis of the data-driven visualization. The only field names used for this renderer type are elevation and intensity.

basemap String|Basemap

optional

Default Value: gray

The named string or basemap object of the Esri basemap that will be paired with the output visualization.

size String

optional

Default Value: 100%

The size of each point expressed as a percentage. This value will determine point sizes scaled based on the given density of points. When the value is 100%, the size of each point is set so that it minimizes the number of gaps between neighboring points. Any value above 100% will allow for points to overlap neighboring points scaled to the given value. Values below 100% scale point sizes smaller so there appear to be more gaps between points.

density Number

optional

Default Value: 25

The number of points per inch in the view.

colorScheme ColorScheme

optional

In authoring apps, the user may select a pre-defined color scheme. Pass the scheme object to this property to avoid getting one based on the basemap.

statistics SummaryStatisticsResult

optional

A statistics object generated from the summaryStatistics function. If statistics for the field have already been generated, then pass the stats object here to avoid making a second statistics

signal AbortSignal

optional

Allows for cancelable requests. If canceled, the promise will be rejected with an error named AbortError. See also AbortController. query to the server.

Returns

Type	Description
Promise<PCContinuousRendererResult>	Resolves to an object containing the renderer to set on the input layer. See PCContinuousRendererResult for more details.

Example

let layer = new PointCloudLayer({
  url: "https://tiles.arcgis.com/tiles/V6ZHFr6zdgNZuVG0/arcgis/rest/services/BARNEGAT_BAY_LiDAR_UTM/SceneServer"
});

let params = {
  layer: layer,
  field: "INTENSITY",
  basemap: "satellite"
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createPCContinuousRenderer(params)
  .then(function(response){
    layer.renderer = response.renderer;
  });

createPCTrueColorRenderer Method createPCTrueColorRenderer(params){Promise<PCTrueColorRendererResult>} Since: ArcGIS Maps SDK for JavaScript 4.5 color since 4.2, createPCTrueColorRenderer added at 4.5.

Generates a PointCloudRGBRenderer based on the RGB field of a given PointCloudLayer. This method simplifies the experience of creating a PointCloudRGBRenderer manually. All that's required is a layer instance. You can optionally set the size and density of the points to suit the needs of the desired visualization.

Parameters

Specification

params Object

Input parameters for generating a true color visualization based on the RGB field of the input layer. See the table below for details of each parameter.

Specification

layer PointCloudLayer

The layer for which the visualization is generated.

size String

optional

Default Value: 100%

density Number

optional

Default Value: 25

The number of points per inch in the view.

signal AbortSignal

optional

Allows for cancelable requests. If canceled, the promise will be rejected with an error named AbortError. See also AbortController.

Returns

Type	Description
Promise<PCTrueColorRendererResult>	Resolves to an object containing the renderer to set on the input layer. See PCTrueColorRendererResult for more details.

Examples

let layer = new PointCloudLayer({
  url: "https://tiles.arcgis.com/tiles/V6ZHFr6zdgNZuVG0/arcgis/rest/services/BARNEGAT_BAY_LiDAR_UTM/SceneServer"
});

// generates an RGB renderer using default values for the given layer.
colorRendererCreator.createPCTrueColorRenderer({
  layer: layer
}).then(function(response){
  layer.renderer = response.renderer;
});

let layer = new PointCloudLayer({
  url: "https://tiles.arcgis.com/tiles/V6ZHFr6zdgNZuVG0/arcgis/rest/services/BARNEGAT_BAY_LiDAR_UTM/SceneServer"
});

// sets options for configuring size of points
let params = {
  layer: layer,
  density: 25,  // points per square inch
  size: "100%"  // minimizes gap between points
};

// when the promise resolves, apply the renderer to the layer
colorRendererCreator.createPCTrueColorRenderer(params)
  .then(function(response){
    layer.renderer = response.renderer;
  });

createVisualVariable Method createVisualVariable(params){Promise<VisualVariableResult>}

This method generates a color visual variable with default stops that are optimally chosen based on the statistics queried for the indicated field or expression and colors determined by the view's background.

There are two different ways this method may be called. The most common case is by providing a layer, view, field, and theme. This is the scenario where the statistics of the data aren't well known and the user doesn't know what colors to use. You can optionally use a valueExpression instead of a field to visualize features based on a numeric value returned from a script executed at runtime.

The other options are provided for convenience for more involved custom visualization authoring applications. For example, if you already generated statistics in another operation, you can pass the object in the statistics parameter to avoid making an extra call to the server. You can also provide a colorScheme if you don't want one picked for you. In this case the view and theme options would be ignored.

Parameters

Specification

params Object

Input parameters for generating a color visual variable based on data returned from a given field or expression. See the table below for details of each parameter.

Specification

The layer for which the visual variable is generated.

view View

optional

field String

optional

The name of the field whose data will be queried for statistics and used for the basis of the data-driven visualization. This property is ignored if a valueExpression is used.

normalizationField String

optional

theme String

optional

Default Value: high-to-low

Determines which values will be emphasized in the continuous ramp and the map. Possible values are listed below.

Value	Description	Example
high-to-low	High values are emphasized with strong colors. The data values above one standard deviation from the mean are assigned the strongest color. Data values below one standard deviation from the mean are assigned the weakest color. All other values are interpolated.
above	High values are emphasized with strong colors. The max data value is assigned the strongest color. The middle or average data value is assigned the weakest color. All other values are interpolated.
below	Low values are emphasized with strong colors. The min data value is assigned the strongest color. The middle or average data value is assigned the weakest color. All other values are interpolated.
above-and-below	Values centered on a meaningful data value (e.g. the average) are visualized with weak colors while other values are emphasized with strong colors. All other values are interpolated.
centered-on	Values centered on a meaningful data value (e.g. the average) are emphasized with strong colors while other values are visualized with weak colors. All other values are interpolated.
extremes	High and low values are emphasized with strong colors. All others are visualized with weak colors. All other values are interpolated.

colorScheme ColorScheme

optional

In authoring apps, the user may select a pre-defined color scheme. Pass the scheme object to this property to avoid getting one based on a theme and the view's background.

valueExpression String

optional

valueExpressionTitle String

optional

Text describing the value returned from the valueExpression. This is used by the Legend widget.

sqlExpression String

optional

A SQL expression evaluating to a number.

sqlWhere String

optional

legendOptions Object

optional

Provides options for setting a title to a field when an expression is provided instead of a field name. This title will represent the field in the Legend.

Specification

title String

optional

The title used to represent the given field or expression in the Legend.

showLegend Boolean

optional

Indicates whether to describe the renderer in the legend.

statistics SummaryStatisticsResult

optional

minValue Number

optional

maxValue Number

optional

worldScale Boolean

optional

Indicates if the size units of the symbols will be in meters. This should be true when generating visualizations with 3D volumetric symbology, except for layers with a mesh geometry type. A view must be provided if this property is set to true.

forBinning Boolean

optional

signal AbortSignal

optional

Allows for cancelable requests. If canceled, the promise will be rejected with an error named AbortError. See also AbortController.

Returns

Type	Description
Promise<VisualVariableResult>	Resolves to an instance of VisualVariableResult.

Examples

let layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/counties_politics_poverty/FeatureServer/0"
});

// visualization based on field and normalization field
let colorParams = {
  layer: layer,
  view: view,
  field: "POP_POVERTY",
  normalizationField: "TOTPOP_CY",
  theme: "above-and-below"
};

// when the promise resolves, apply the visual variable to the renderer
colorRendererCreator.createVisualVariable(colorParams)
  .then(function(response){
    let renderer = layer.renderer.clone();
    renderer.visualVariables = [ response.visualVariable ];
    layer.renderer = renderer;
  });

let layer = new FeatureLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/counties_politics_poverty/FeatureServer/0"
});

// visualization based off Arcade expression
let colorParams = {
  layer: layer,
  view: view,
  valueExpression: "($feature.POP_POVERTY / $feature.TOTPOP_CY) * 100",
  sqlWhere: "TOTPOP_CY > 0",
  legendOptions: {
    title: "% of people living in poverty"
  }
};

// when the promise resolves, apply the visual variable to the renderer
colorRendererCreator.createVisualVariable(colorParams)
  .then(function(response){
    let renderer = layer.renderer.clone();
    renderer.visualVariables = [ response.visualVariable ];
    layer.renderer = renderer;
  });

Type Definitions

AgeRendererResult Type Definition AgeRendererResult Since: ArcGIS Maps SDK for JavaScript 4.9 color since 4.2, AgeRendererResult added at 4.9.

The result object of the createAgeRenderer() method. See the table below for details of each property.

Properties: renderer ClassBreaksRenderer

The renderer object configured to best match the background of the view and the spread of the data. Set this on a layer's renderer property to update its visualization.

visualVariable ColorVariable

A color visual variable configured based on the statistics of the data and the background of the view.

unit String

The time unit used to represent age in the output renderer.

colorScheme ColorScheme

The color scheme used by the visual variable.

defaultValuesUsed Boolean

Indicates whether default values are used in the absence of sufficient data and/or statistics from the layer. Default values are typically used when all features have the same field value or no value at all.

statistics SummaryStatisticsResult

Basic statistics returned from a query to the service for data from the given field name or expression.

basemapId String

The ID of the basemap used to determine the optimal fill color of the features.

basemapTheme String

Indicates whether the average color of the input view's basemap is light or dark.

ClassBreaksRendererResult Type Definition ClassBreaksRendererResult Since: ArcGIS Maps SDK for JavaScript 4.6 color since 4.2, ClassBreaksRendererResult added at 4.6.

The result object of the createClassBreaksRenderer() method. See the table below for details of each property.

Properties: renderer ClassBreaksRenderer

The renderer object configured to best match the background of the view and the spread of the data. Set this on a layer's renderer property to update its visualization.

classBreaksResult ClassBreaksResult

This object describes class breaks generated from data in a layer for a given field with a specified classification method.

colorScheme ColorScheme

The color scheme used for the class breaks.

defaultValuesUsed Boolean

Indicates whether default values are used in the absence of sufficient data and/or statistics from the layer. Default values are typically used when all features have the same field value or no value at all.

basemapId String

The ID of the basemap used to determine the optimal fill color of the features.

basemapTheme String

Indicates whether the average color of the input view's basemap is light or dark.

ContinuousRendererResult Type Definition ContinuousRendererResult

The result object of the createContinuousRenderer() method. See the table below for details of each property.

Properties: renderer ClassBreaksRenderer

The renderer object configured to best match the view's background and the spread of the data. Set this on a layer's renderer property (or the featureReduction.renderer property to update its visualization.

visualVariable ColorVariable

A color visual variable configured based on the statistics of the data and the view's background.

colorScheme ColorScheme

The color scheme used by the visual variable.

defaultValuesUsed Boolean

Indicates whether default values are used in the absence of sufficient data and/or statistics from the layer. Default values are typically used when all features have the same field value or no value at all.

statistics SummaryStatisticsResult

Basic statistics returned from a query to the service for data from the given field name or expression.

basemapId String

The ID of the basemap used to determine the optimal fill color of the features.

basemapTheme String

Indicates whether the average color of the input view's basemap is light or dark.

PCContinuousRendererResult Type Definition PCContinuousRendererResult

The result object of the createPCContinuousRenderer() method. See the table below for details of each property.

Properties: renderer PointCloudStretchRenderer

The renderer object configured to best match the background of the view and the spread of the data. Set this object on the input layer's renderer property to update its visualization.

colorScheme ColorScheme

The color scheme used by the renderer.

defaultValuesUsed Boolean

Indicates whether default values are used in the absence of sufficient data and/or statistics from the layer. Default values are typically used when all features have the same field value or no value at all.

statistics SummaryStatisticsResult

Basic statistics returned from a query to the service for data from the given field name.

basemapId String

The ID of the basemap used to determine the optimal color scheme for the output renderer.

basemapTheme String

Indicates whether the average color of the input view's basemap is light or dark.

PCTrueColorRendererResult Type Definition PCTrueColorRendererResult

The result object of the createPCTrueColorRenderer() method. See the table below for details of each property.

Property: renderer PointCloudRGBRenderer

The renderer object configured to represent the true color of each point in the point cloud. This gives the PointCloudLayer a realistic visualization of how it looks in the real world. Set this object on the input layer's renderer property to update its visualization.

VisualVariableResult Type Definition VisualVariableResult

The result object of the createVisualVariable() method. See the table below for details of each property.

Properties: visualVariable ColorVariable

A color visual variable configured based on the statistics of the data and the view's background.

colorScheme ColorScheme

The color scheme used by the visual variable.

statistics SummaryStatisticsResult

Basic statistics returned from a query to the service for the given field or expression.

defaultValuesUsed Boolean

Indicates whether default values are used in the absence of sufficient data and/or statistics from the layer. Default values are typically used when all features have the same field value or no value at all.

basemapId String

The ID of the basemap used to determine the optimal fill color of the features.

basemapTheme String

Indicates whether the average color of the input view's basemap is light or dark.

authoringInfo AuthoringInfo

Authoring information related to the creation of the visual variable. This includes information related to UI inputs from sliders and selected themes.

ArcGIS Maps SDK for JavaScriptAPI Reference

Method Overview

Method Details

createAgeRenderer

createClassBreaksRenderer

createContinuousRenderer

createPCContinuousRenderer

createPCTrueColorRenderer

createVisualVariable

Type Definitions

AgeRendererResult

ClassBreaksRendererResult

ContinuousRendererResult

PCContinuousRendererResult

PCTrueColorRendererResult

VisualVariableResult

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