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Re: Drawing vector fields with New Graphics [message #85086 is a reply to message #85084] Tue, 02 July 2013 11:40 Go to previous messageGo to previous message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
Phillip Bitzer writes:

> Chacun a son gout, I guess. I would like to have some sort of control of the length of the vectors, using vx, vy.

In cgMapVector, I choose the default length of the vector to be 1/100 of
the distance of the plot in the X direction. This causes the maximum
length of the vector to be no more than the default length times SQRT
(2). The length is user-configurable, but has some connection to the
coordinate system in any case. In cgMapVector the length is usually
expressed in meters and gives you a convenient way to write a vector
legend on the map.

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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