[ncl-talk] problems when using the "res at cnFillPalette = "BlGrYeOrReVi200""

[Rick Brownrigg]

Hi,

I looked at the code where the error message arises, and this is indeed a
bit of a mystery. If you might send me one of your WRF files, I'll try to
run the script in the debugger to get a better idea of whats going on.

Rick


On Mon, May 10, 2021 at 12:10 AM ZUO Ziping via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Dear ncl-team,
>
> The other day when I was trying to use the colors in the "
> *BlGrYeOrReVi200*", I use the *res at cnFillPalette = "BlGrYeOrReVi200"*.
> However, it kept reminding me "*warning:ContourPlotSetValues: color index
> (204) exceeds size of palette, defaulting to foreground color for entry
> (12)*".
> But when I changed the instruction to
> *gsn_define_colormap(wks,"BlGrYeOrReVi200")*, it works fine. I'd like to
> ask the reason for these two instructions. The following is my full script.
>
>
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
>
> begin
>
>   DATADir = "/disk/wrfout/"
>   FILES = systemfunc (" ls -1 " + DATADir + "wrfout_d04_2020-06* ")
>   numFILES = dimsizes(FILES)
>   print("numFILES = " + numFILES)
>   print(FILES)
>   print (" ")
>
>   type = "pdf"
>   wks = gsn_open_wks(type,"average_temp")
>
>   res = True
>   res at MainTitle                   = "REAL-TIME WRF"
>   res at Footer = False
>
>   pltres = True
>   pltres at PanelPlot = True
>   pltres at FramePlot = False
>
>   mpres = True
>   mpres at mpDataBaseVersion = "HighRes"
>   mpres at mpGeophysicalLineColor = "Black"
>   mpres at mpGridLineColor = "Black"
>   mpres at mpDataResolution = "Finest"
>
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
>   a = addfiles(FILES+".nc","r")
>
>   times = wrf_user_getvar(a,"times",-1)  ; get all times in the file
>   ntimes = dimsizes(times)         ; number of times in the file
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
>
>
> do k = 0,23,1
>     meantemp = new((/162,213/),float)
>         meantemp = 0
>         temp = new((/ntimes,162,213/),float)
>
>    do it = k,ntimes-1,24             ; TIME LOOP
>       print("Working on time: " + times(it) )
>           fi = addfile(FILES(it),"r")
>           T_2 = fi ->T2     ; T2 in Kelvin
>       tc2 = T_2-273.16                  ; T2 in C
>           temp(it,:,:) = tc2
>           meantemp(:,:) = meantemp(:,:)+temp(it,:,:)
>         end do
>
>         meantemp(:,:) = meantemp(:,:)/30
>
>         opts = res
>     opts at cnFillOn = True
>     opts at ContourParameters = (/23,37,1/)
>     opts at cnFillPalette = "BlGrYeOrReVi200"
>     contour_FLX = wrf_contour(a[k],wks,meantemp,opts)
>     delete(opts)
>
>         plot = wrf_map_overlays(a[k],wks,contour_FLX,pltres,mpres)
>
> end do        ; END OF TIME LOOP
>
> end
>
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
>
>
> Thank you for your time!
>
> Best regards
> Zoe
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