topic Re: Plug-in Data Source - Geographic Coordinate System in ArcObjects SDK Questions

Plug-in Data Source - Geographic Coordinate System

GregFinch — Fri, 12 Oct 2012 19:01:37 GMT

Hi,

We're building a plug-in data source. The data is typical WGS1984 lat/lng data. In the plugin data source, we're creating the spatial reference with code similar to the following:

var spatialReferenceFact = new SpatialReferenceEnvironmentClass(); shapeField.SpatialReference_2 = spatialReferenceFact.CreateGeographicCoordinateSystem(6326);

Problem is, when I try to drop the plug-in data source on a map, I get the following error:

Error opening feature class.  The specified WKID (factory code) or WKT (definition string) is not a Projected Coordinate System.

I'm curious why it's wanting a projected coordinate system. According to the docs, I should be able to use a Geographic Coordinate System with a plug-in data source.

Any suggestions?

Re: Plug-in Data Source - Geographic Coordinate System

MelitaKennedy — Fri, 12 Oct 2012 19:46:12 GMT

Hi Greg,

You're creating a datum, not a geographic coordinate system. Try using 4326 rather than 6326!

geographic coordinate system: name, datum (spheroid), prime meridian, angular unit

Melita

Re: Plug-in Data Source - Geographic Coordinate System

GregFinch — Fri, 12 Oct 2012 20:11:13 GMT

Thank you! That fixed it.