[ncl-talk] Error in explicit selection mode

[Rick Brownrigg]

Hi,

Errors coming out of the low-level contouring routines, like this case, are
very hard to track down. I have found in the code where the error message
emanates, but I'm uncertain as to the conditions leading to it other than
that something horribly wrong happened in the contouring code.  Are you
able to share your script and data (you can send directly to me)?
Otherwise, are you able to post the plot when you use AutomaticLevels, and
possibly the output from
stat_dispersion() on the variable being plotted?

http://ncl.ucar.edu/Document/Functions/Contributed/stat_dispersion.shtml

Rick


On Tue, Sep 3, 2019 at 3:59 PM Anahita Amiri Farahani via ncl-talk <
ncl-talk at ucar.edu> wrote:

> Hello all,
>
> I faced a problem when I replaced
> res at cnLevelSelectionMode =  "AutomaticLevels"   ; AutomaticLevels
>
> with
> res at cnLevelSelectionMode = "ExplicitLevels"   ; set explicit contour
> levels
>   res at cnLevels            =
> (/-0.5,-1,-1.5,-2,-4,-6,-8,-10,-12,-14,-16,-18,-20,0.,0.5,1.5,2.5,3.5,4.5,6,7,8,10,12,14,16,18,20/)
>
> I got this error:
>
> fatal:ContourPlotDraw: CPCLAM - CONTRADICTORY AREA-IDENTIFIER INFORMATION
>
>
>
>
>
> Here is the plotting part:
>
>
>  res                     = True               ; plot mods desired
>   res at cnFillOn            = True              ; turn on color
>   res at gsnSpreadColors     = True               ; use full color map
>   res at cnLinesOn           = False              ; no contour lines
>   res at cnLineLabelsOn      = False              ; no line labels
>
>
>  ; res at gsnAddCyclic        = False
>   res at gsnDraw             = False           ; don't draw
>   res at gsnFrame            = False           ; don't advance frame
>   res at cnInfoLabelOn       = False           ; turn off cn info label
>   res at cnFillOn            = True            ; turn on color
>   res at gsnSpreadColors     = True            ; spread out color table
>   res at gsnSpreadColorStart = 2               ; color to startt
>
>   res at lbLabelBarOn        = True          ; turn off individual cb's
>
>
>
>
>
> Any suggestions would be appreciated.
>
>
> Thanks,
>
> Ana
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