virtual MgLineStringCollection* MgCoordinateSystemGridRegion::GetWestLine

(

void

)

[pure virtual]

Gets the west line of this region.

Returns:

The west line (MgLineStringCollection) of this region

Remarks:

The return value is clipped to the frame boundary of the grid object from which the region object was obtained. Since it is possible (rare, but possible) that a region boundary line enters and leaves the frame boundary more than once.