[ncl-talk] panel plot, each with their own colormap

[Laura Fowler]

Hi Rich:

Thanks for your suggestion. I did think of using gsnPanelRowSpec, but this
won't work since I am using the same color bar for the first and second row
but a different color bar for the third row instead of one color bar for
all the rows.That is the reason I decided to follow what is done in
panel_26.ncl.

It looks like there is some kind of resizing in the second call to
gsn_panel but I have no idea how this happens either. Not sure what to to
try next.

Thanks,
Laura




On Mon, Aug 6, 2018 at 10:37 AM, Rick Brownrigg <brownrig at ucar.edu> wrote:

> Hi Laura,
>
> I don't have an answer for why the one plot is so much larger than the
> others.
>
> I wonder however, if you might be able to use the following resource to
> specify a layout of (/1, 2, 2/), and let gsn_panel() do the spacing:
>
> *gsnPanelRowSpec* By default, the *gsn_panel*
> <http://ncl.ucar.edu/Document/Graphics/Interfaces/gsn_panel.shtml>
> routine panels its plots according to the *dims* variable which indicates
> rows x columns. If you set *gsnPanelRowSpec*
> <http://ncl.ucar.edu/Document/Graphics/Resources/gsn.shtml#gsnPanelRowSpec>
> to True, however, then you can use the *dims* variable to indicate the
> number of plots you want per row. For example, setting *gsnPanelRowSpec*
> <http://ncl.ucar.edu/Document/Graphics/Resources/gsn.shtml#gsnPanelRowSpec>
> to True and *dims* to (/2,3,1/) will put 2 plots in the first row, 3
> plots in the second row, and 1 plot in the third row.
>
> Default: False
> I don't knwo for certain whether this will work, but might be worth a shot.
>
> Rick
>
>
> On Fri, Aug 3, 2018 at 2:36 PM, Laura Fowler <laura at ucar.edu> wrote:
>
>> Hello:
>>
>> I followed panel_26.ncl to create 3 panels plots below each other, each
>> set with their own colormap (see attached file totPREC.dec2015.png). Now, I
>> would like to do the same thing, but with only one TMPA map centered at the
>> top of the figure (see tentative figure test.png).
>>
>>
>> For both the 6 and 5 panel plots, I used:
>>
>> resP                  = True
>>
>> resP at gsnMaximize      = True
>>
>> resP at gsnDraw          = False
>>
>> resP at gsnFrame         = False
>>
>> resP at gsnPanelLabelBar = True
>>
>>
>> pplots = gsn_panel_return(wks,plots(0:1),(/1,2/),resP)
>>
>> bb     = NhlGetBB(pplots)
>>
>> height = max(bb(0:1,0)) - min(bb(0:1,1))
>>
>> print("--- bb(0)  = "+bb(0:1,0))
>>
>> print("--- bb(1)  = "+bb(0:1,1))
>>
>> print("--- height = "+height)
>>
>>
>> ;--- using height value, now we can panel all sets of plots:
>>
>> resP at gsnDraw        = True
>>
>> resP at gsnMaximize    = True
>>
>> resP at gsnPanelTop    = 1.0
>>
>> resP at gsnPanelBottom = resP at gsnPanelTop - height
>>
>>
>> For the 6 panel plot, I used the loop:
>>
>> do n = 0,nplots-1,2
>>
>>    gsn_panel(wks,plots(n:n+1),(/1,2/),resP)
>>
>>
>> ;---Set for the next panel call.
>>
>>    resP at gsnPanelMainString = ""
>>
>>    resP at gsnPanelTop        = resP at gsnPanelBottom - 0.02
>>
>>    resP at gsnPanelBottom     = resP at gsnPanelTop-height
>>
>> end do
>>
>> frame(wks)
>>
>>
>> wheres for the 5 panel plot, I used the loop:
>>
>> do n = 0,nplots-1,2
>>
>>    print("--- n = "+n)
>>
>>    if(n .eq. 0) then
>>
>>       gsn_panel(wks,plots(0:0),(/1,1/),resP)
>>
>>    else
>>
>>       gsn_panel(wks,plots(n-1:n),(/1,2/),resP)
>>
>>    end if
>>
>>    resP at gsnPanelMainString = ""
>>
>>    resP at gsnPanelTop        = resP at gsnPanelBottom - 0.02
>>
>>    resP at gsnPanelBottom     = resP at gsnPanelTop-height
>>
>> end do
>>
>> frame(wks)
>>
>>
>> I do not understand why the second plot of the second column is so much
>> bigger than the one on the left side and the two plots for the third row?
>> Can somebody help me figure this out?
>>
>>
>> Many thanks,
>> Laura
>>
>>
>> --
>> !-----------------------------------------------------------
>> --------------------------------------------------
>> Laura D. Fowler
>>
>> Mesoscale and Microscale Meteorology Division (MMM)
>> National Center for Atmospheric Research
>> P.O. Box 3000, Boulder CO 80307-3000
>>
>> e-mail: laura at ucar.edu
>> phone: 303-497-1628
>>
>> !-----------------------------------------------------------
>> --------------------------------------------------
>>
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>>
>


-- 
!-------------------------------------------------------------------------------------------------------------
Laura D. Fowler

Mesoscale and Microscale Meteorology Division (MMM)
National Center for Atmospheric Research
P.O. Box 3000, Boulder CO 80307-3000

e-mail: laura at ucar.edu
phone: 303-497-1628

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