FROMCOORDSYS

FROMCOORDSYS

Used in: REQUEST
Servers: Query   Feature   ArcMap
Parent elements: GET_PROJECT

<FROMCOORDSYS	Attribute Description Table
When using ArcMap Server: *id ="integer"* *string ="string"* When using Query or Feature Server: *id ="integer"* *string ="string"* datumtransformid ="integer" datumtransformstring ="string" > No Child Elements </FROMCOORDSYS >
Bold: Attribute or child element is required.

Description:

GET_PROJECT

Restrictions:

Must use either id or string, but not both.
For datum transformations either datumtransformid or datumtransformstring is used, but not both.
In ArcMap Image Services, datumtransformid or datumtransformstring are not valid.

Notes:

For a complete list of supported IDs and definition strings, see:
- Projected Coordinate Systems Listing [Sorted by projection ID] [Sorted by name]
- Geographic Coordinate Systems Listing [Sorted by projection ID] [Sorted by name]
- Datum Transformation Listing [Sorted by projection ID] [Sorted by name]
When using definition strings, the quotes in the string must be changed to " so the ArcIMS Spatial Server can interpret the string correctly. For example, the definition string for World Mollweide is:

PROJCS["World_Mollweide",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mollweide"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1]]

Once the quotes have been changed, the string looks like this:

PROJCS["World_Mollweide",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mollweide"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",0],UNIT["Meter",1]]
The attributes datumtransformid and datumtransformstring are used when datum transformation information needs to be included. Only datum transformations to and from WGS 1984 are supported.
- When these attributes are used with FROMCOORDSYS, the datum transformation is from a non-WGS 1984 datum to WGS 1984. For example, Pulkovo_1942_To_WGS_1984 (datumtransformid="8157") transforms data from Pulkovo 1942 to WGS 1984.
- When these attributes are used with TOCOORDSYS, the datum transformation is from WGS 1984 to a non-WGS 1984 datum. In the above example, the datum transformation is from WGS 1984 to Pulkovo 1942.

Attribute Descriptions for FROMCOORDSYS:

Attribute	Usage	Back to Top
id	Projected or geographic coordinate system ID. Use either id or string, but not both.
string	Projected or geographic coordinate system definition string. Use either id or string, but not both.
datumtransformid	Datum transformation ID. Use either datumtransformid or datumstransformstring, but not both.
datumtransformstring	Datum transformation definition string. Use either datumtransformid or datumstransformstring, but not both.
id	Projected or geographic coordinate system ID. Use either id or string, but not both.
string	Projected or geographic coordinate system definition string. Use either id or string, but not both.

Examples for FROMCOORDSYS:

Example 1:	Back to Top
<?xml version="1.0" encoding="UTF-8"?> <ARCXML version="1.1"> <REQUEST> <GET_PROJECT envelope="true"> <FROMCOORDSYS id="4326"/> <TOCOORDSYS id="53030"/> <ENVELOPE minx="-178" miny="18" maxx="-66" maxy="71"/> </GET_PROJECT> </REQUEST> </ARCXML>