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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hello, has anyone seen some weird behaviour with iso-lines as shown in the figure: http://www.geogr.uni-jena.de/~p6taug/weird_1.jpgThe iso-lines go off to the bottom right corner. First I thought it was my data, which have missing values (mapped to -9999). But it is not really the -9999 or the missing data (NaN), because zoom out still shows the lines ending up where a rainbow ends: nowhere.
See also http://www.geogr.uni-jena.de/~p6taug/weird_2.jpgwhich confirms that the isolines end/start somewhere *fixed* at minus infinity.
Furthermore, other simple test data containing missing don't show this. Changing the parameters http://www.geogr.uni-jena.de/~p6taug/weird_3.jpgcauses what, in my view, is abnormal behaviour: I set the base to 600 and suddenly only a few lines are drawn. (Lines are clipped in length, and not in height.)
Any views, ideas or at least some expression of pity ;-) Cheers, Ugo
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