How to change Domain property in SpatialReferenceBuilder?

Question

Domain is a read-only member of SpatialReferenceBuilder.  But I need to expand the coordinate system to fix out of bound during editing.  But I can not do so through Domain since it is read-only.  Is there a way to that?

AnnetteLocke · Answer

Hi Fayu, We will add a setter for the Domain property in the next release. In the meantime, you can change the xy-scale which will change the domain. Here is an example: const long suLimit = 9007199254740990; // Default domain for Web Mercator is xmin = -20037700, // ymin = -30241100, xmax = 900699887774.099, ymax = 900689684374.099 // with xyScale = 10000 // To change the domain change the xyScale. This will keep the same false origin, // but xmax and ymax will change. // Make the xyScale smaller => xmax, ymax are bigger. // xyScale bigger => xmax, ymax are smaller. SpatialReferenceBuilder builder = new SpatialReferenceBuilder(SpatialReferences.WebMercator); // Suppose I know what I want my domain to be, then I have to figure out the scale. // xyScale = suLimit / (xmax - xmin) // assuming that xmax - xmin = ymax - ymin i.e. domain is a square. // If xmax - xmin != ymax - ymin, take the larger of the two. // Expand the default domain double xMin = -20037700; double xMax = 9007179217040.99; double yMin = -30241100; double yMax = 9007169013640.99; double xyScale = suLimit / Math.Max(xMax - xMin, yMax - yMin); // xyScale = 1000 builder.XYScale = xyScale; Envelope domain = builder.Domain; Console.Out.WriteLine($"xMin = {domain.XMin}"); Console.Out.WriteLine($"xMax = {domain.XMax}"); Console.Out.WriteLine($"yMin = {domain.YMin}"); Console.Out.WriteLine($"yMax = {domain.YMax}");‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Let me know if you have any questions. Annette