GeoJSON Layer (GeoJSON)

The GeoJSON layer type references a GeoJSON file from a publicly-accessible web server. It then dynamically loads into the map at run time. The GeoJSON layer will maintain a reference to the GeoJSON resource.

Referenced by: operationalLayers

Properties

Property Details
blendMode Blend modes are used to create various effects by blending colors of top and background layers. normal blend mode is the default.
Valid values: average, color, color-burn, color-dodge, darken, destination-atop, destination-in, destination-out, destination-over, difference, exclusion, hard-light, hue, invert, lighten, lighter, luminosity, minus, multiply, normal, overlay, plus, reflect, saturation, screen, soft-light, source-atop, source-in, source-out, vivid-light, xor
customParameters A sequence of custom parameters appended to the URL of all requests related to a layer.
disablePopup Indicates whether to allow a client to ignore popups defined by the service item.
effect Effect provides various filter functions to achieve different visual effects similar to how image filters (photo apps) work.
featureEffect Feature Effect emphasizes or deemphasizes features that satisfy a filter using graphical effects
id A unique identifying string for the layer.
layerDefinition Additional properties that define drawing information and other configurations for the layer.
See layerDefinition properties table.
layerType String indicating the layer type.
Valid value of this property GeoJSON
maxScale A number representing the maximum scale at which the layer will be visible. The number is the scale's denominator.
minScale A number representing the minimum scale at which the layer will be visible. The number is the scale's denominator.
opacity The degree of transparency applied to the layer on the client side, where 0 is full transparency and 1 is no transparency.
popupInfo A popupInfo object defining the content of popup windows when you click or query a feature.
refreshInterval Refresh interval of the layer in minutes. Non-zero value indicates automatic layer refresh at the specified interval. Value of 0 indicates auto refresh is not enabled.
showLabels Labels will display if this property is set to true and the layer also has a labelingInfo property associated with it. This property can get stored in the web scene config.
showLegend Boolean value indicating whether to display the layer in the legend. Default value is true.
title A user-friendly string title for the layer that can be used in a table of contents.
url The URL to the layer.
visibility Boolean property determining whether the layer is initially visible in the web map.

layerDefinition properties

Property Details
definitionExpression SQL-based definition expression string that narrows the data to be displayed in the layer.
drawingInfo.labelingInfo[] An object defining the properties used for labeling the layer. If working with Map Image layers, this property is only applicable if the layer is enabled with dynamic layers
drawingInfo.renderer An object defined which provides the symbology for the layer. If working with Map Image layers, this property is only applicable if the layer is enabled with dynamic layers
featureReduction Feature reductions declutter the screen by hiding features that would otherwise intersect with other features on screen.
fields[] An array of field objects containing information about the attribute fields for the feature collection or layer.
objectIdField Indicates the name of the object ID field in the dataset.
orderBy[] An array of orderByField objects specifying the feature display order. Features can be sorted in ascending or descending order of a numeric or date field only. If ascending, features with smaller values will be drawn on top of features with larger values. For date values, ascending order means features with older dates will be drawn on top of features with recent dates. If descending, the sort behavior is reversed. Only one field can be specified at this time. When this property is not defined, features are displayed in the order in which they are received by the client.

geojson Layer Example

{
  "id": "geojson_1234",
  "layerType": "GeoJSON",
  "title": "Earthquakes",
  "visibility": true,
  "opacity": 1,
  "url": "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/significant_week.geojson",
  "blendMode": "overlay",
  "popupInfo": {}
}

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