Re: Is there a easy way to plot contour map with a zonal mean?

Hi Guangshan,

(I'm referring to
http://www.ncl.ucar.edu/Applications/Scripts/color_7.ncl for the following)

abs_zm = dim_avg(ABS) ; compute zonal mean for ABS = (lat,lon)
do gg = 0,dimsizes(ABS&lat)-1 ; subtract zonal mean from ABS
    ABS(gg,:) = (/ ABS(gg,:) - abs_zm(gg) /)
end do
delete(abs_zm)

The above will remove the zonal mean from the ABS array.
Hope that helps,
Adam

Guangshan chen wrote:
> Dear all,
>
> I want to plot a figure like the example on this page
> http://www.ncl.ucar.edu/Applications/Images/color_7_lg.png
> But I want to change contour map from showing the original value to
> showing the value removed Zonal mean.
>
> Is there a easy way to do so?
>
> Thanks in advance
>
> Guangshan
>
> _______________________________________________
> ncl-talk mailing list
> ncl-talk_at_ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk

-- 
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Adam Phillips			             asphilli_at_ucar.edu
National Center for Atmospheric Research   tel: (303) 497-1726
ESSL/CGD/CAS                               fax: (303) 497-1333
P.O. Box 3000				
Boulder, CO 80307-3000	  http://www.cgd.ucar.edu/cas/asphilli
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