virtual double MgCoordinateSystemGridBase::GetConvergenceAngle

(

MgCoordinate *

location

)

[pure virtual]

Gets the convergence angle for the given location.

Parameters:

location

(MgCoordinate) The location

Returns:

The convergence angle for the given location

Remarks:

The following can be of value for rendering and stylization objects which need to render north arrows, scale bars, etc. Location parameter is always in viewport/frame coordinates.