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Re: CGContour with and without cell_fill keyword [message #89927 is a reply to message #89926]

Mon, 29 December 2014 10:14

envi35@yahoo.ca
Messages: 48
Registered: March 2005

Member

On Monday, December 29, 2014 12:32:39 PM UTC-5, David Fanning wrote:
> Jenny writes:
>
>>
>> Hi all, I'm using CGContour to make maps of vegetation index. I found my maps look quite different when I plot with or without the /cell_fill keyword as in the following lines:
>>
>> CGContour,lai,lon,lat,/cell_fill,c_colors=c_colors,Levels=us erLevels,max_value=dmax,min_value=dmin,C_CHARTHICK=2,/overpl ot, Color=black,missingvalue=nan
>>
>> CGContour, lai,lon,lat,c_colors=c_colors,Levels=userLevels,max_value=dm ax,$
>> min_value=dmin,C_CHARTHICK=2,/overplot, Color=black,missingvalue=nan
>>
>> I know David suggests using cell_fill for projected maps or data with missing values, I thought that's just for making the map looks good, e.g. without holes etc., but not different maps.
>>
>> The map without the cell_fill keyword shows larger values (more realistic to me)than the map with the keyword. Does anybody knows why? Which map is correct?
>
> The one with the CELL_FILL keyword is correct. The other is completely
> wrong. :-)
>
> http://www.idlcoyote.com/color_tips/fill_colors.html
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
> Sepore ma de ni thue. ("Perhaps thou speakest truth.")

Thanks! David. I guess the map with neither Fill nor Cell_Fill is more wrong?

Jenny

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[Message index]

		CGContour with and without cell_fill keyword By: envi35@yahoo.ca on Mon, 29 December 2014 09:03
		Re: CGContour with and without cell_fill keyword By: David Fanning on Mon, 29 December 2014 09:32
		Re: CGContour with and without cell_fill keyword By: envi35@yahoo.ca on Mon, 29 December 2014 10:14
		Re: CGContour with and without cell_fill keyword By: David Fanning on Mon, 29 December 2014 11:49

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