[ncl-talk] gsn_csm_vector_scalar_map

[Karin Meier-Fleischer]

What does min(p(i)) and max(p(i)) return?


> Am 05.02.2016 um 21:21 schrieb alesall <alesall at iri.columbia.edu>:
> 
> 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 <mailto: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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____________________________________
Dipl. Geophys. Karin Meier-Fleischer
Visualisierung
Abteilung Anwendungen

Deutsches Klimarechenzentrum GmbH (DKRZ)
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