ArcGIS GeoAnalytics Server tasks that have the process
property in the context
parameter will analyze features in
the specified spatial reference. If you are saving the results to the spatiotemporal data store results will always be
projected to World Geographic Coordinate System 1984 after analysis for storage.
Process spatial reference syntax:
"processSR": {"wkid": <wkid>}
wkid
is the well-known integer ID of a spatial reference. See Using spatial references
for the list of supported spatial references and their IDs. Many analytics require using a projected coordinate system
to calculate results.
Spatial Reference example (GCS_WGS_1984)
"processSR": {"wkid": 4326}
You may use a different spatial reference for analysis (process
) and for defining the processing
extent
(See: Extent). For example, you can define the
extent
in wkid
4326 (GDC_WGS_1984) and analyze in wkid
3857 (WGS_1984 Web Mercator - auxiliary sphere):
Extent and processSR example:
"context" : {
"extent": {
"xmin": -122.68,
"ymin": 45.53,
"xmax": -122.45,
"ymax": 45.6,
"spatialReference": {
"wkid": 4326
}
},
"processSR": {"wkid": 3857}
}