| What is happening in CONTOUR? [message #1587] |
Wed, 08 December 1993 11:53 |
zawodny
Messages: 121
Registered: August 1992
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Senior Member |
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Has anyone run into this before? I have a repeatable problem apparently with
the contour routine. For a certain array t, when I call contour in the
following way:
contour,t,x,y,lev=levs,/follow,c_linest=(levs lt 0),max=9000.
I get this somewhat mysterious message:
% Array has a corrupted descriptor: <No name>.
% Execution halted at PLOT12 <plot12.pro( 70)> (CONTOUR).
% Called from $MAIN$ .
Before the message appears, I do get the contour plot I expect (all of it as
far as I can tell). If I run the program (PLOT12) with a different input file
(different t) the problem does not occur. The values in t are well behaved
(ranging from -115 to 30). There are no NaN's or anything else goofy.
Furthermore, if I do a .con or a .step the result is that the program tries to
execute the contour statement again (as though the "program counter" did not
increment). If I do a .skip, the next line is executed and a .con then causes
the program to resume normal execution. I have traced the problem to the
/follow keyword.
I'm running IDL Ver 3.5.0 for OSF-alpha. Anyone got a clue to what is going on
here?
Thanks in advance,
--
Joseph M. Zawodny (KO4LW) NASA Langley Research Center
Internet: zawodny@arbd0.larc.nasa.gov MS-475, Hampton VA, 23681-0001
Packet: ko4lw@n4hog.va.usa
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