[ncl-talk] common labelbar levels

[Adam Phillips]

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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