Project with Transformation - where to get projection engine file?

Question

I try to use projection with specific transformation for bigger accuracy. In my case I need to convert from

* WGS84 (WKID=4326)

to

* EPSG:2229 NAD83 / California zone 5 (ftUS)

using the best transformation for Southern California:

* NAD_1983_To_WGS_1984_southern_California_54 1750

The code should be simple:

// 1. Prepare transformation:
 SpatialReference spCaliforniaNAD = new SpatialReference(2229);
 GeographicTransformationStep geoStep = new GeographicTransformationStep(1750);
 GeographicTransformation geoTransform = new GeographicTransformation(geoStep);

// 2. Transform myPoint into projected coordinate system:
 MapPoint myPoint = new MapPoint(-117.82739800, 34.64073000, SpatialReferences.Wgs84);
 MapPoint projectedPoint = (MapPoint)GeometryEngine.Project(myPoint, spCaliforniaNAD, geoTransform);

The problem is that both GeographicTransformationStep and GeographicTransformation have missing projection engine files (IsMissingProjectionEngineFiles==true). Of course it results with exception in the last line.

How can I get that missing projection engine file?

Thanks,

Waldek

MichaelBranscomb · Accepted Answer

Hi,

Additional information on this file is included in Spatial references—ArcGIS Runtime SDK for .NET | ArcGIS for Developers.

Thanks

Mike