[ncl-talk] gsn_csm_vector_scalar_map

[alesall]

Hi, is it complaining that the spacing is too fine compared to the wide range between min and max values, and reverting to doing what it thinks best?



-- 
Alessandra Giannini
IRI for Climate and Society - The Earth Institute at Columbia University
P.O. Box 1000, Palisades NY 10964-8000
phone/fax: +1 845 680-4473/4864 - email: alesall at iri.columbia.edu <mailto:alesall at iri.columbia.edu>
> On Feb 5, 2016, at 3:19 PM, Xi Chang <xi.chang01 at gmail.com> wrote:
> 
> Hi Karin,,
> 
> I did, but it doesnt work for gsn_csm_vector_scalar_map, no idea why..
> 
> Chang.
> 
> On Fri, Feb 5, 2016 at 7:53 PM, Karin Meier-Fleischer <meier-fleischer at dkrz.de <mailto:meier-fleischer at dkrz.de>> wrote:
> Hi Xi,
> 
> have you taken a look at the first example of the vector examples page
>     http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl <http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl>
> 
> When you want to control the minimum/maximum and interval of the contour lines use
>   res at cnLevelSelectionMode = "ManualLevels"     ; set manual contour levels
>   res at cnMinLevelValF       = 24.0               ; set min contour level
>   res at cnMaxLevelValF       = 29                 ; set max contour level
>   res at cnLevelSpacingF      = 0.10               ; set contour spacing
> Bye,
> Karin
> 
> Am 05.02.16 um 19:00 schrieb Xi Chang:
>> Hello...
>> 
>> Could you please tell me how to control the contour interval for color shading once im using this function  gsn_csm_vector_scalar_map.
>> 
>> ;===========PLOT=================
>> 
>>   wks = gsn_open_wks("png","overlay")
>> 
>>   res                       = True              ; plot mods desired
>>   plot = new(16,graphic)
>> 
>>   res at gsnDraw             = False           ; don't draw
>>   res at gsnFrame            = False           ; don't advance frame
>> 
>> ; vector rescoures
>>   res at vcRefLengthF             = 0.045
>>   res at vcRefMagnitudeF          = 20.0
>>   res at vcRefAnnoOrthogonalPosF  = -0.12
>>   res at vcRefAnnoParallelPosF    =  0.997
>>   res at vcRefAnnoFontHeightF     = 0.015
>>   res at vcMinDistanceF          = 0.03
>>   res at lbLabelBarOn        = False    
>> 
>>   res at mpProjection   = "AzimuthalEquidistant"  ; choose map projection
>>   res at mpLimitMode    = "LatLon"          ; use lat/lon coordinates to limit area
>>   res at mpMinLatF      = 25.
>>   res at mpMaxLatF      = 75.
>>   res at mpMinLonF      = -80.
>>   res at mpMaxLonF      = 20.
>>   res at gsnMaximize           = True   
>> 
>>   res at gsnScalarContour        = True
>>   res at cnFillOn                = True
>>   res at cnFillPalette           = "gui_default"     ; set color map
>>   res at cnLinesOn               = False             ; turn off contour lines
>> 
>> 
>> 
>>   do i=0,15
>>   plot(i)  = gsn_csm_vector_scalar_map(wks,u(i,:,:),v(i,:,:), \
>>                                    p(i,:,:),res)
>>   end do
>> 
>>   resP                     = True                ; modify the panel plot
>>   resP at gsnMaximize           = True   
>>   gsn_panel(wks,plot,(/4,4/),resP)               ; now draw as one plot
>> 
>> 
>> end
>> 
>> 
>> 
>> 
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