Hello,
has anyone seen some weird behaviour with iso-lines as shown in the figure:
http://www.geogr.uni-jena.de/~p6taug/weird_1.jpg
The 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.jpg
which 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.jpg
causes 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
