ArcGIS Online uses the WGS_1984_Web_Mercator_Auxiliary_Sphere (WKID 3857) projection. However, from the REST endpoint of a hosted service, the spatial reference being used may appear as 102100 (3857).
mysql> SELECT * FROM INFORMATION_SCHEMA.ST_SPATIAL_REFERENCE_SYSTEMS WHERE SRS_ID=3857\G *** 1. row *** SRS_NAME: WGS 84 / Pseudo-Mercator SRS_ID: 3857 ORGANIZATION: EPSG ORGANIZATION_COORDSYS_ID: 3857 DEFINITION: PROJCS["WGS 84 / Pseudo-Mercator",GEOGCS["WGS 84",DATUM["World Geode...
mysql> SELECT * FROM INFORMATION_SCHEMA.ST_SPATIAL_REFERENCE_SYSTEMS WHERE SRS_ID=4326 OR SRS_ID=3857 ORDER BY SRS_ID DESC\G *** 1. row *** SRS_NAME: WGS 84 SRS_ID: 4326 ORGANIZATION: EPSG ORGANIZATION_COORDSYS_ID: 4326 DEFINITION: GEOGCS["WGS 84",DATUM["World Geodetic System 1984...
Next, let's look at a 3-dimensional image that shows the cube and sphere more clearly. Each cube face is mapped to the quadtree data structure mentioned, and each node in the quadtree is numbered using aHilbert space-filling curvewhich preserves locality of reference. In the following image...
Next, let's look at a 3-dimensional image that shows the cube and sphere more clearly. Each cube face is mapped to the quadtree data structure mentioned, and each node in the quadtree is numbered using aHilbert space-filling curvewhich preserves locality of reference. In the following image...
-- Add reference to the Azure Maps Spatial IOmodule. -->vardatasource, delimitedFileUrl ="Chicago_Police_Stations.csv";// Download CSV file (delimitedFileUrl) from:// https://github.com/Azure-Samples/AzureMapsCodeSamples/blob/main/Static/data/SpatialCSV/Chicago_Police_Stations.csvfunctionGetMa...
When using ST_DWithin or the Near spatial relationships, transform your data to a projected spatial reference that preserves distances between geometries for the most accurate results. For more information seeChoosing a projected coordinate system. ...
SRID AUTH_NAME AUTH_SRID SRTEXT -1 Not defined -1 "LOCAL_CS[""Spatial reference wasn't specified"",LOCAL_DATUM[""Unknown"",0],UNIT[""m"",1.0],AXIS[""x"",EAST],AXIS[""y"",NORTH]]" 0 EPSG 404000 "LOCAL_CS[""Wildcard 2D cartesian plane in metric unit"",LOCAL_DATUM[""Unkno...
Sets the Coordinate Reference System (CRS) for the drawing. Includes options to define user CRSs SPMTRANSFORMCRS: Transform Coordinates. Creates a new drawing transforming geometrically objects from the current one between two Coordinate Systems ("Professional" edition only) SPMCREATEKML: Export to ...
the_geom_webmercator EPSG:3857. UTM projected coordinates in meters. This is a conventional Coordinate Reference System, widely accepted as a ‘de facto’ standard in webmapping.In CARTO, the_geom_webmercator column is the one we see represented in the map. Know more about projections:In...