| polyfill on a map [message #17386] |
Wed, 13 October 1999 00:00 |
Harald Frey
Messages: 41
Registered: March 1997
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Member |
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I found some strange behavior of the polyfill on a map. I run
{ sparc sunos unix 5.1 Apr 13 1998}
I want to colorize one half of the globe. Try this
map_set,70.,210.,0.,/satellite,sat_p=[3.6,0.,-100.],/grid,/i sotrop,/horizon,
$ /noborder,/whole,/conti
polyfill,[fltarr(91)+120,fltarr(91)+120+180],[findgen(91)*2. -90,90.-findgen(91)*2],$
color=50
and there are some small regions close to the horizon without colored
pixels. But it gets even better if you change the latitude
map_set,88.,210.,0.,/satellite,sat_p=[3.6,0.,-100.],/grid,/i sotrop,/horizon,
$ /noborder,/whole,/conti
polyfill,[fltarr(91)+120,fltarr(91)+120+180],[findgen(91)*2. -90,90.-findgen(91)*2],$
color=50
and you get just a colored stripe.
And how can I tell IDL to fill the "other side", in this case the right
part of the globe?
Thanks,
Harald
=========================================================
Harald U. Frey
Space Sciences Lab phone: 510-643-3323
University of California fax: 510-643-2624
Berkeley, CA 94720-7450 email: hfrey@ssl.berkeley.edu
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