[ncl-talk] Filling area between curve and x-axis in xy2 plot

Guido Cioni guidocioni at gmail.com
Thu May 26 14:20:21 MDT 2016


No need to file a ticket, I guess it is not a big problem. I just wanted to
know if I was missing some part of the documentation.
Thank you again
Cheers,
Il 25 mag 2016 10:59 PM, "Adam Phillips" <asphilli at ucar.edu> ha scritto:

> Hi Guido,
> I will file a JIRA ticket for this issue; I am guessing you are the first
> one to report it.
>
> I tried a variety of ways to get the filled curve to get drawn after the
> regular curves to no avail. If you need to have your axes the original way
> you had them I think your idea of drawing a polygon is a good one. See the
> first draw order example here:
> http://www.ncl.ucar.edu/Applications/draworder.shtml#ex1
> You would make the bottom of your polygon equal to your set YRefLine, in
> this case = 0.
> Adam
>
>
> On Wed, May 25, 2016 at 2:26 PM, Guido Cioni <guidocioni at gmail.com> wrote:
>
>> I already thought of swapping the axes. That made the trick indeed,
>> although I would have preferred to keep fluxes axis on the left and Qnet on
>> the right.
>> Thank you!
>>
>> P.S. Any plans about controlling the Draw Order in xy2 plots in the
>> future?
>>
>> Guido Cioni
>> http://guidocioni.altervista.org
>>
>>
>>
>>
>> Il giorno 25 mag 2016, alle ore 22:13, Adam Phillips <asphilli at ucar.edu>
>> ha scritto:
>>
>> Hi Guido,
>> I tested your code here and am seeing what you are seeing. I did get it
>> to work though by changing the order of the plots in gsn_csm_xy2. So, try
>> changing this:
>> plot(j)=gsn_csm_xy2(wks,time,data,data2,res,res2)
>> to this:
>> plot(j)=gsn_csm_xy2(wks,time,data2,data,res2,res)
>> Let ncl-talk know if that does not work for you.
>> Adam
>>
>> On Wed, May 25, 2016 at 3:19 AM, Guido Cioni <guidocioni at gmail.com>
>> wrote:
>>
>>> Dear all,
>>> I’ve been trying to produce a simple xy2 plot with two lines and a
>>> filled curve. The problem is that the latter, which is drawn together with
>>> the curve in the second y axis, cover the other two lines. I tried to play
>>> around with the resources xyCurveDrawOrder and tfPolyDrawOrder but
>>> nothing did the trick. I think that there is no special resource that
>>> controls the draw order of elements in xy2 plots, thus the second curve is
>>> always drawn on top of the others.
>>> Is there any other way to achieve the same results? Maybe using polyline
>>> ?
>>> Attached you find a snippet of the code (only the relevant part) and the
>>> resulting plot.
>>>
>>>  do j=0,dimsizes(case)-1
>>>
>>>  plot=new(dimsizes(case), graphic)
>>>  poly=new(dimsizes(case), graphic)
>>>  wks   = gsn_open_wks ("pdf",”tserie")                ; open workstation
>>>  res                  = True                     ; plot mods desired
>>>  res at xyDashPatterns=(/0,0/)
>>>  res at xyLineThicknessF=(/3,3/)
>>>  res at xyLineColors=(/"blue","red”/)
>>>
>>>    data= (/lhflx, shflx/)
>>>    data2 = qnet
>>>
>>>    res2= True
>>>    res2 at gsnDraw = False
>>>    res2 at gsnFrame = False
>>>    res2 at xyLineColor = "gold"
>>>    res2 at gsnYRefLine           = 0.0
>>>   res2 at gsnAboveYRefLineColor = “lightyellow"
>>>
>>>   plot(j)=gsn_csm_xy2(wks,time,data,data2,res,res2)
>>>
>>> delete([/lhflx, shflx, serie, time, data /])
>>>  end do
>>>
>>> plnres = True
>>> gsn_panel(wks,plot,(/3,1/),plnres)
>>>
>>>
>>> Guido Cioni
>>> http://guidocioni.altervista.org
>>>
>>>
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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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