[ncl-talk] common labelbar levels

[Dennis Shea]

Also, of possible use ...

If you are not sure of a 'good' common min/max/interval to use see

http://www.ncl.ucar.edu/Document/Functions/Built-in/nice_mnmxintvl.shtml

Example 3

You can the use

  res@*cnLevelSelectionMode*
<http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLevelSelectionMode>
= "ManualLevels"
  res@*cnMinLevelValF*
<http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnMinLevelValF>
      = mnmxint(0)
  res@*cnMaxLevelValF*
<http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnMaxLevelValF>
      = mnmxint(1)
  res@*cnLevelSpacingF*
<http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLevelSpacingF>
     = mnmxint(2)



On Tue, Jun 21, 2016 at 11:18 AM, Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Noelia,
> Correct. You either let NCL decide the levels (AutomaticLevels) or you do
> not. NCL may pick the same contour levels for each panel if the plotted
> data is similar in range from one panel to the next, but it very likely
> will not. It is recommended that you set the contour levels yourself, and
> thus you will need to know the range of your plotted data. You can use
> stat_dispersion to statistically analyze the arrays that are to be plotted:
> http://www.ncl.ucar.edu/Document/Functions/Contributed/stat_dispersion.shtml
>
> Adam
>
>
>
>
>
>
> On Tue, Jun 21, 2016 at 11:10 AM, Noelia otero <noeli1680 at gmail.com>
> wrote:
>
>> Hi Adam,
>>
>> So, if I have 10 plots I should set ManualLevels, specifically with the
>> max or min value ..I mean I have to know what these values are to set the
>> levels, right? There is no way to set automatically these levels,  isn't
>> there? I though that using AutomaticLevels should be fine, but seeing my
>> plots, it isn't..
>>
>> Then, I guess, I have to get those values previously to define the label?
>>
>> Thanks again for the help,
>>
>> Cheers
>>
>> 2016-06-21 18:59 GMT+02:00 Adam Phillips <asphilli at ucar.edu>:
>>
>>> Hi Noelia,
>>> If you do not set cnLevelSelectionMode (to ManualLevels or
>>> ExplicitLevels) then NCL will determine the contour levels for each
>>> individual plot, and they can be different. See examples 1 and 4 here:
>>> http://www.ncl.ucar.edu/Applications/contourLev.shtml
>>> Hope that helps!
>>> Adam
>>>
>>>
>>> On Tue, Jun 21, 2016 at 10:45 AM, Noelia otero <noeli1680 at gmail.com>
>>> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I'm using a common labelbar for several plots. However it isn't working
>>>> properly, because it seems that it is taking the values of the first plot,
>>>> and then, the levels are wrong for the rest of them. I don't know if I have
>>>> to define always "Manual levels"..What I am defining:
>>>>
>>>>   res = True
>>>>   res at gsnAddCyclic   = False
>>>>   res at gsnMaximize    = True
>>>>   res at gsnDraw        = False
>>>>   res at gsnFrame       = False
>>>>   res at lbLabelBarOn   = False ;not individual labelbar
>>>>   res at lbAutoManage   = True
>>>>
>>>>   res at mpMinLatF      = min(lat)
>>>>   res at mpMaxLatF      = max(lat)
>>>>   res at mpMinLonF      = min(lon)
>>>>   res at mpMaxLonF      = max(lon)
>>>>   res at cnLinesOn      = False
>>>>   res at cnFillOn       = True
>>>>
>>>> ;for the panel
>>>>   panelres = True
>>>>   panelres at gsnFrame = False
>>>>   panelres at gsnMaximize = True
>>>>   panelres at gsnMaximize = True
>>>>   panelres at txFontHeightF = 0.01
>>>>   panelres at gsnPanelLabelBar = True
>>>>   panelres at gsnPanelBottom = 0.06
>>>>   panelres at lbLabelFontHeightF = .006
>>>>   panelres at pmLabelBarWidthF = 0.35 ;label bar width
>>>>
>>>> But the levels are wrong...what did I miss?
>>>>
>>>> Many thanks!
>>>>
>>>> Cheers
>>>>
>>>> Noelia
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>> --
>>> Adam Phillips
>>> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
>>> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>>>
>>> <http://www.cgd.ucar.edu/staff/asphilli>
>>>
>>
>>
>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>
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