ProjectPointAtElev

This function projects a point from one coordinate system to another at some elevation above the ellipsoid. Use this instead of ProjectPoint if you need to do extremely precise conversions at some height above the ellipsoid. The typical difference between conversions at the ellipsoid surface and within a few thousand meters of the surface is less than 1 meter. If None is passed for either projection parameter, the current view/export projection will be used. This function provides an easy way to convert from latitude/longitude coordinates (or coordinates in any other supported projection) to any other projection, including the current view projection.

Parameters:

• aXIn (float) – X coordinate of input point

• aYIn (float) – Y coordinate of input point

• aProjIn (GM_Projection_t) – projection to convert from (None for current)

• aProjTo (GM_Projection_t) – projection to convert to (None for current)

• aElev (float) – elevation in meters above ellipsoid surface to do conversion at

Returns:

Error Code

Return type:

GM_Error_t32

Returns:

X coordinate of output point

Return type:

float

Returns:

Y coordinate of output point

Return type:

float