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Map Projection Bug? [message #88175]

Tue, 25 March 2014 12:57

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Folks,

Is this a bug?

IDL> map_projection = 103 ; Albers Equal Area
IDL> ellipsoid = 24 ; WGS 84
IDL> struct = Map_Proj_Init(map_projection, ELLIPSOID=ellipsoid)
% GCTP Library: Equal latitudes for St. Parallels on opposite
sides of equator: alber-forinit.

IDL> struct = Map_Proj_Init(map_projection, ELLIPSOID=ellipsoid, $
STANDARD_PAR1=20, STANDARD_PAR2=-19.5)

There doesn't seem to be any mention anywhere that standard paralells
are *required* parameters for this projection. In fact, they are listed
among the optional parameters.

IDL 8.2.3 on Windows.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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Map Projection Bug?

By: David Fanning on Tue, 25 March 2014 12:57

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