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FAQ: What are the new map projections for ArcGIS 8.1 Service Pack 1?

Question

What are the new map projections for ArcGIS 8.1 Service Pack 1?

Answer

The new map projections are:

· Aitoff
· Craster Parabolic
· Flat Polar Quartic
· Gnomonic
· Hammer-Aitoff
· Orthographic
· Times
· Vertical Near-side Perspective
· Winkel Tripel

Supporting PRJ files are available in the Polar and World folders under Projected Coordinate Systems folder.

Vertical Near-side Perspective is only supported for spheres. If your data does not completely close at the edge of the projection, check that the geographic coordinate system is based on a sphere.

The Winkel Tripel inverse is not working correctly. See Related Information.

Related Information