| Re: Anyone can explain this? [message #64185] |
Mon, 08 December 2008 17:49  |
xiao zhang
Messages: 81
Registered: June 2008
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Member |
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On Dec 7, 5:45 pm, David Fanning <n...@dfanning.com> wrote:
> xiao writes:
>> Hi ~ guys. I have a question about the contour command. When I call
>> it like this:
>> ...
>> It shows me the right color and I can change the color in the contour
>> command, Why is that? Any one got ideas?
>
> The contour command requires that you use index colors. Load your
> R, G, and B vectors into the color table, then set up C_COLOR like
> this:
>
> Device, Get_Decomposed=theState, DECOMPOSED=0
> TVLCT, r, g, b, 1
> Map_Set, ...
> CONTOUR, ...., C_COLORS=Indgen(64)+1B
> Device, DECOMPOSED=theState
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
Thank you very much David~
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| Re: Anyone can explain this? [message #64194 is a reply to message #64185] |
Sun, 07 December 2008 15:45  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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xiao writes:
> Hi ~ guys. I have a question about the contour command. When I call
> it like this:
> ...
> It shows me the right color and I can change the color in the contour
> command, Why is that? Any one got ideas?
The contour command requires that you use index colors. Load your
R, G, and B vectors into the color table, then set up C_COLOR like
this:
Device, Get_Decomposed=theState, DECOMPOSED=0
TVLCT, r, g, b, 1
Map_Set, ...
CONTOUR, ...., C_COLORS=Indgen(64)+1B
Device, DECOMPOSED=theState
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: Anyone can explain this? [message #64264 is a reply to message #64194] |
Wed, 10 December 2008 09:32 |
xiao zhang
Messages: 81
Registered: June 2008
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Member |
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On Dec 7, 5:45 pm, David Fanning <n...@dfanning.com> wrote:
> xiao writes:
>> Hi ~ guys. I have a question about the contour command. When I call
>> it like this:
>> ...
>> It shows me the right color and I can change the color in the contour
>> command, Why is that? Any one got ideas?
>
> The contour command requires that you use index colors. Load your
> R, G, and B vectors into the color table, then set up C_COLOR like
> this:
>
> Device, Get_Decomposed=theState, DECOMPOSED=0
> TVLCT, r, g, b, 1
> Map_Set, ...
> CONTOUR, ...., C_COLORS=Indgen(64)+1B
> Device, DECOMPOSED=theState
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.dfanning.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
Sorry, David, But i have another question, I suddenly realized that my
map did not show the continent line. The continent line was erased by
the contour . But if I put the map_grid and map_continents after the
contour, it showed me the error :
-Current ploting device must have mapping coordinates..
I think i have used the overplot and noerase key word in contour
command. But it still does not shown.....
Thanks ~~~ :)
map_set,/grid, /continents,/CYLINDRICAL,limit=
[-31.6166,118.4641,-34.2542,121.6421],$
color=64,/noborder,ymargin=[15,5],/NOERASE
;map_grid, color=64, /device
;map_continents,/countries, /coasts, color=64, /device
contour,u3,color=64,title='U 0.1 m/s For Grid3 Init', /device,/
NOERASE,xrange=[0,76],$
/xstyle,xTICKINTERVAL=73,xTICKNAME=[118.4641,121.6421],$
yrange=[0,74],/ystyle,yTICKINTERVAL=73,yTICKNAME=
[-31.6166,-34.2542], $
C_COLORS=cn1,/cell_FILL,nLEVELS=48,ymargin=[15,5]
Contour, u3, Color=63,/Overplot,nLEVELS=48,/NOERASE, /device
map_grid, color=64, /device
map_continents,/countries, /coasts, color=64, /device
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