[ncl-talk] Overlaying two maps with different axes

[G.Monte at isac.cnr.it]

Dear all,
I have just solved the the draw/frame calling problem.
Now, the matter is that the xy-plots (latitude vs brightness temperature)
are superimposed on the contouring map axes only (completely different
quantities), so the overlaying plot looks completely out of phase. I am
wondering if I could realize a map with four axes (two for gsm_csm_contour
map and the other for gsn_csm_xy plot).
Below are attached the two png files that I want to overlay on a single plot.

Thanks again,
Giulio Monte


> Hi Giulio,
> It looks like you are attempting to overlay two gsn_csm_xy plots onto one
> spatial plot generated by gsn_csm_contour. I believe that is possible, but
> your draw/frame calls need to be modified to make this work. Right now you
> call draw (=draw the plot)/frame (=flip the page) after creating the
> contour plot at lines 263/264. Thus, when you go to overlay the xy plots
> the frame has been advanced so there is nothing to overlay on. If you
> simply comment 263-264 out I think it will work, as you call draw/frame at
> lines 324-325.
>
> If you have any further questions please respond to the ncl-talk email
> list.
> Adam
>
> On Wed, Aug 22, 2018 at 8:16 AM <G.Monte at isac.cnr.it> wrote:
>
>> Dear all,
>> I have generated two separate maps having different xy-axes each other
>> in
>> NCL 6.4.0; the first one is a contouring map of Ku radar reflectivity,
>> while the second one represents two xy-plots of brightness temperature.
>> Now, I would like to overlay these two maps; for it I arranged a script
>> (attached below) that however is incomplete, because they are not
>> overlayed and I think that two xy-axes are needed. I ask you if someone
>> could explain me the best way to make it work properly.
>> Thanks in advance.
>>
>> Giulio Monte
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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>
>
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