Re: How to change default contour separation on color contour plots ?

Hi Helen,
I don't know of a way to "scale" the number of contour levels in the way
you wish. You might try setting cnMaxLevelCount:
http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnMaxLevelCount
which allows you to set the maximum number of contours. Note that the
behavior of cnMaxLevelCount depends somewhat on the setting of
cnLevelSelectionMode.
Adam

On 01/26/2010 09:11 PM, Helen Parish wrote:
> I am constructing panels of color contour plots. I want to use the
> default contour spacings and limits on each plot (rather than having
> to set each one of them individually and manually). However, since
> there are many panels on one page, the default contour spacing always
> tends to give around twice as many contours on each plot as one would
> like, given that each plot is fairly small, and too many contours
> obscure the details and also the colors, and make the plots hard to
> interpret.
>
> I would like to allow the contour levels and range to be set
> automatically for each plot, but I am wondering if there is a way to
> request automatic scaling with only half the number of contours per
> plot for example ?.
>
> Thanks,
> Helen.
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Adam Phillips 
asphilli@ucar.edu
National Center for Atmospheric Research   tel: (303) 497-1726
Climate and Global Dynamics Division         fax: (303) 497-1333
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Boulder, CO 80307-3000    http://www.cgd.ucar.edu/cas/asphilli
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