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Re: Please help with color contour [message #2997 is a reply to message #2907]

Thu, 13 October 1994 06:31

andy
Messages: 31
Registered: November 1993

Member

In article <1994Oct13.015610.24061@galileo.cc.rochester.edu>, zdng@laforge.cc.rochester.edu (Zhong Ding) writes:
> Hi, there
>
> Could some one help me on the color contour. I used the following
> command to plot the color contour with contour levels, but PV-wave
> tells me that
>
> % POLYCONTOUR: Warning: Unclosed contour ignored.
>
> What this means?
>

I remember back in the old days (when I was programming in the old country)
that one was encouraged to specifically close all contours around the
boundary of one's data. If one had a 5x5 array with x and y axes ranging
from 1 to 5 one would create a 7x7 array, place the 5x5 array in the middle,
assign a value of 1.e-30 to values along the outer rows and columns of the
new array, assign values of .9999, 1, 2, 3, 4, 5, 5.0001 to xnew, ynew,
then contour the new array over xnew, ynew.

We don't do this anymore since IDL (by RSI) has added some useful keywords
like /close, /fill, and now /cell.

--
,__o Andrew F. Loughe (Mail Code 971) voice: (301) 286-5899
-\_<, NASA Goddard Space Flight Center fax : (301) 286-0240
(*)/'(*) Greenbelt, MD 20771 email: andy.loughe@gsfc.nasa.gov

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[Message index]

		Please help with color contour By: zdng on Wed, 12 October 1994 18:56
		Re: Please help with color contour By: landers on Tue, 18 October 1994 12:53
		Re: Please help with color contour By: andy on Thu, 13 October 1994 06:31

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