Does not handle ESRI "GDA94" datum code

[MichaelUnverferth]

The OGRSpatialReference::importFromESRI function does not translate the GDA94 datum code. This should be translated to well-known code EPSG:6283.

[MichaelUnverferth]

Actually, translation should be to EPSG:4283 for CRS itself, 6283 is the datum ID.

ED50 is also known to be used in some files (same as EUR = EPSG:4230 already supported).

[warmerdam]

Michael,

I'm not aware, off hand, of any datums for which morphFromESRI() inserts the EPSG authority codes. But we do have this information available for at least some datums in the gdal_datum.csv file which includes ESRI names for datums along with the EPSG information.

To clarify, I gather this ticket is requesting that morphFromESRI() fill out authority information for datums where known, and especially for ED50 and GDA if they aren't mapped by gdal_datum.csv. Is that right? Could you attach ESRI .prj files for ED50 and GDA so I can be sure they are being mapped appropriately?

[MichaelUnverferth]

Actually I am requesting the change to importFromESRI, not morphFromESRI. The check would be similer to the ones already being done for NAD27, NAD83, WGS84 and WGS72. I attached a file that uses the GDA94 datum. I don't have one handy that uses ED50, but the conversion is identical to the EUR datum already done. This is used with the ESRI Binary Grid reader.

[warmerdam]

Michael,

Support for GDA94 and ED50 added in trunk (r11827) and 1.4 branch (r11828).

I hadn't understood this was an old-style esri prj file till I saw the example.

Best regards