Export Map
- URL:https:// <mapservice-url>/export
- Required Capability:Map
- Version Introduced:9.3
Description
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.
Apart from the usual response formats of HTML and JSON, users can also request a format called image while performing this operation. When users perform an export with the format of image, the server responds by directly streaming the image bytes to the client. With this approach, you don't get any information associated with the exported map other than the actual image.
The extent displayed in the exported map image may not exactly match the extent sent in the box parameter when the aspect ratio of the image size does not match the aspect ratio of the box. The aspect ratio is the height divided by the width. In these cases, the extent is resized to prevent map images from appearing stretched. The exported map's extent is sent along with the JSON and HTML responses, and may be used in client-side calculations. It's important that the client-side code update its extent based on the response.
New at 10.8
Supports the following new parameters. These parameters are only supported by map services published from ArcGIS Pro.
- clipping to mask out layers outside of a clip polygon.
- spatialFilter to draw or query only features that meet the spatial filter criteria.
Note:Check for supportsClipping, supportsSpatialFilter on a map service root resources before using it.
New at 10.6.1
Supports the following new parameter:
- historicMoment to query from a given moment in an archive enabled layer.
New at 10.5
Supports the following new parameters:
- datumTransformations to provide a desired datum transformation to be applied while features get projected.
- mapRangeValues to set values to ranges applicable to all layers with same ranges in the map service.
- layerRangeValues to set range values specific layers.
- layerParameterValues to set value to parameterized filters to specific layers.
Note:Simple syntax is not supported as an expected value for layerDefs parameter starting 10.5.
Request parameters
|
Parameter | Details |
|---|---|
| bbox (Bounding Box) | (Required) The extent (bounding box) of the exported image. Unless the bboxSR parameter has been specified, the bbox is assumed to be in the spatial reference of the map. The bbox coordinates should always use a period as the decimal separator, even in countries where traditionally a comma is used. Syntax Example |
| bbSR (Bounding Box Spatial Reference) | The spatial reference of the bbox. The spatial reference can be specified as either a well-known ID or as a spatial reference JSON object. If the bboxSR is not specified, the bbox is assumed to be in the spatial reference of the map. |
| layers (Layers) | Determines which layers appear on the exported map. There are four ways to specify which layers are shown:
Syntax Example  Caution:Showing or excluding group layers also shows or excludes all groups and sublayers within the group layer (assuming they draw by default). For example, if you want to show group layer 0 and layer 2 is a sublayer of this group, layer 2 will also display. The same logic applies when excluding a group layer. |
| layerDefs (Layer Definitions) | 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 always will be honored. Note:When filtering the features of individual layers in a mosaic dataset, the client must explicitly specify the definition expression on the parent mosaic dataset layer. The definition expression will not be honored if it is specified on any of the child layers. Simple syntax is no longer supported starting at 10.5. Syntax |
| size (Image Size) |
The size (width and height) of the exported image in pixels. If the size is not specified, an image with a default size of 400 by 400 pixels will be exported. Syntax Example |
| imageSR (Image Spatial Reference) | The spatial reference of the exported image. The spatial reference can be specified as either a well-known ID or as a spatial reference json object. If the imageSR is not specified, the image will be exported in the spatial reference of the map. |
| historicMoment (Historic Moment) | This parameter was added at 10.6.1. It returns an output image with features from a specific epoch time. This parameter applies only if the layer is archiving enabled and the supportsQueryWithHistoricMoment property is set to true. This property is provided in the layer resource. If historicMoment is not specified, the current features are drawn. Syntax Example |
| format (Image Format) | The format of the exported image. The default format is png. Values: png | png8 | png24 | jpg | pdf | bmp | gif | svg | svgz | emf | ps | png32 |
| transparent (Background Transparent) | If true, the image will be exported with the background color of the map set as its transparent color. The default is false. Only the .png and .gif formats support transparency. Internet Explorer 6 does not display transparency correctly for png24 image formats. Values: true | false |
| dpi (DPI) | The device resolution of the exported image (dots per inch). If the dpi is not specified, an image with a default dpi of 96 will be exported. Example |
| time (Time) | The time instant or time extent of the exported map image. Note:
Syntax Example |
| layerTimeOptions (Layer Time Options) | The time options per layer. Users can indicate whether or not the layer should use the time extent specified by the time parameter or not, whether to draw the layer features cumulatively or not and the time offsets for the layer. Syntax Example |
| dynamicLayers (Dynamic Layers) | Use this parameter to modify the layer drawing order, change layer drawing info, and change layer data source version for this request. New layers (dataLayer) can also be added to the dynamicLayers based on the map service registered workspaces. The order of dynamicLayers array defines the layer drawing order. The first element of the dynamicLayers array draws on top of all other layers. Note:
Syntax: See the Dynamic Layers codeblock examples section below for examples. |
| gdbVersion (Geodatabase Version Name) | Use this parameter to specify the geodatabase version. Syntax Example |
| mapScale (Map Scale) | Use this parameter to export a map image at a specific scale, with the map centered around the center of the specified bounding box (bbox). Where scale is typically represented as 1:x, this value is x. Syntax Examples |
| rotation (Rotation) | Use this parameter to export a map image rotated at a specific angle, with the map centered around the center of the specified bounding box (bbox). It could be positive or negative number. Syntax Exmaple |
| datumTransformations (Datum Transformations) | This parameter was added at 10.5. Use it to apply one or more datum transformations to the map when imageSR is different than the map service's spatial reference. It is an array of transformation elements. Transformations specified here are used to project features from layers within a map service to imageSR. Note:While specifying transformation, you need to think about which datum transformation is most applicable to project a layer to the imageSR. The sourceSpatialReference property for each layer resource reports which spatial reference features are stored in the source dataset. For a list of valid datum transformation ID values and well-known ID (WKID) text strings, see Geographic transformations. For more information on datum transformation, please see transformation parameter in Project operation. Syntax Example |
| layerParameterValues (Layer Parameter Values) | This parameter was added at 10.5. It allows you to filter the features of individual layers in the exported map by specifying a value or values to an array of preauthored parameterized filters for those layers. When this value is not specified for any parameter in a request, the default value assigned during authoring time gets used instead. When a parameterInfo allows multiple values, you must pass them in an array. Note:Check parameterInfos at the layer resources for the available parameterized filters, their default values and expected data type. Syntax Example |
| mapRangeValues (Map Range Values) | This parameter was added at 10.5. It allows you to filter features in the exported map from all layers that are within the specified range instant or extent. Note: Check rangeInfos at the layer resources for the available ranges. Null is allowed in value-range cases, that means infinity. For example, [null, 1500] means all features with values <= 1500, and [1000, null] means all features with values >= 1000. Syntax Example |
| layerRangeValues (Layer Range Values) | This parameter was added at 10.5. It allows you to filter the features of individual layers in the exported map by specifying a value or values to an array of preauthored parameterized filters for those layers. When this value is not specified for any parameter in a request, the default value assigned during authoring time gets used instead. When a parameterInfo allows multiple values, you must pass them in an array. Note:Check parameterInfos at the layer resources for the available parameterized filters, their default values, and expected data type. Syntax Example |
| clipping (Clipping) | This parameter was added at 10.8. It allows you to mask out layers outside of the clip polygon in the exported map. Clipping can mask out any layer type i.e. feature layers, raster layers, TIN layers etc. Optionally, you can use excludedLayers to excludes layers from being clipped. Syntax Example |
| spatialFilter (Spatial Filter) | This parameter was added at 10.8. It allows you to filter out features from all features layers based on the input spatial filter. It is like layerDefs but instead of using attribute filter, map service uses spatial filter to determine which features will be drawn. Note:Spatial filters only works against feature layers. When both clipping and spatialFilter are provided, clipping takes precedence and spatialFilter gets ignored. Syntax Example |
| f (Format) | The response format. The default response format is html. If the format is image, the image bytes are directly streamed to the client. Values: html | json | image | kmz |
Example usage
Example 1: Export a map. Include only the bounding box.
https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/export?bbox=-127.8,15.4,-63.5,60.5
Example 2: Export a map. Change imageSR to 102004 (USA_Contiguous_Lambert_Conformal_Conic projection):
https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/export?bbox=-127.8,15.4,-63.5,60.5&bboxSR=&layers=&size=&imageSR=102004&format=&transparent=false&dpi=&f=html
Example 3: Export a map. Change imageSR to 102004 (USA_Contiguous_Lambert_Conformal_Conic projection), image size to a width and height of 800x600, format to gif, and transparent to false.
https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/export?bbox=-115.8,30.4,-85.5,50.5&bboxSR=&layers=&size=800,600&imageSR=102004&format=gif&transparent=false&dpi=&f=html
Example 4: Export the same map as above but change the output format to pretty json (pjson).
https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/export?bbox=-115.8,30.4,-85.5,50.5&bboxSR=&layers=&size=800,600&imageSR=102004&format=gif&transparent=false&dpi=&f=pjson
Example 5: Export a map with dynamic layers. Update an existing map layer symbology.
https://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/export?bbox=-183.78001472868405,16.300709121618663,-61.406854669684265,74.03030803096895&bboxSR=&layers=&layerDefs=&size=&imageSR=&format=png&transparent=false&dpi=&time=&layerTimeOptions=&dynamicLayers=[{"id":101,"source":{"type":"mapLayer","mapLayerId":3},"drawingInfo":{"renderer": {"type":"simple", "symbol": {"type":"esriSFS","style":"esriSFSSolid","color":[255,0,0,255],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[0,255,0,255],"width":1}}}}}]&gdbVersion=&f=html
Dynamic layer request examples
[
{ //disable time on existing map service layer and turn off labels
"id": 501,
"source":
{
"type": "mapLayer",
"mapLayerId": 0
},
"drawingInfo": {
"showLabels": false
},
"layerTimeOptions": {
"useTime": false
}
}
},
{ //add a new layer from registered workspace and label features with a feature attribute value {TaxLotId]
"id": 502,
"source": {
"type": "dataLayer",
"dataSource": {
"type": "table",
"workspaceId": "MAP",
"dataSourceName": "MAP.user1.Taxlots"
}
},
"drawingInfo": {
"renderer": {
"type": "simple",
"symbol": {
"type": "esriSFS",
"style": "esriSFSSolid",
"color": [166,36,0,255],
"outline": {
"type": "esriSLS",
"style": "esriSLSSolid",
"color": [110,110,110,255],
"width": 1.0
}
},
"label": "TaxLots",
"description": ""
},
"transparency": 60,
"showLabels": true,
"labelingInfo": [
{
"labelPlacement": "esriServerPolygonPlacementAlwaysHorizontal",
"labelExpression": "[TaxLotId]",
"useCodedValues": false,
"symbol": {
"type": "esriTS",
"color": [255,255,0,255],
"verticalAlignment": "bottom",
"horizontalAlignment": "left",
"font": {
"family": "Arial",
"size": 12,
"style": "normal",
"weight": "bold",
"decoration": "none"
}
},
"minScale": 15000,
"maxScale": 30000,
"where": ""
}
]
}
},
{ //change the Version of existing map service layer
"id": 503,
"source": {
"type": "mapLayer",
"mapLayerId": 1,
"gdbVersion": "USER1"
},
"definitionExpression": "neighborhood = 'French Quarter'"
},
{ //add a raster from registered workspace
"id": 504,
"source": {
"type": "dataLayer",
"dataSource": {
"type": "raster",
"workspaceId": "rasterWS",
"dataSourceName": "NewOrleans.tif"
}
},
"drawingInfo": {
"transparency": 0
}
}
]
JSON Response syntax
{
"href": "<href>",
"width": <width>,
"height": <height>,
"extent": {<envelope>},
"scale": <scale>
}
JSON Response example
{
"href": "https://atlantic/arcgisoutput/_ags_map42ef5eae899942a9b564138e184a55c9.png",
"width": 400,
"height": 400,
"extent": {
"xmin": -109.55,
"ymin": 25.76,
"xmax": -86.39,
"ymax": 49.94,
"spatialReference": {
"wkid": 4326,
"latestWkid": 4326
}
},
"scale" : 2.53E7
}