[ncl-talk] Fwd: plotting rotated grid - good overlay or bad box

[James Ciarlo']

Hi Adam,

Thanks for your reply. To be honest, I had tried that system, but I was
trying to avoid that blank space and the inclined box.

I was hoping to get something like the method #1, that focuses only on the
box with the data.

On Thu, 2 Jun 2022 at 20:01, Adam Phillips <asphilli at ucar.edu> wrote:

> Hi James,
> It looks like you took your code from example #1
> <https://www.ncl.ucar.edu/Applications/Scripts/rotatedltln_1.ncl> in the
> rotated lat/lon examples. That example demonstrated 2 methods to plot
> rotated data:
> 1 - Set tfDoNDCOverlay=True and do not transform the data onto the map
> projection.
> 2 - Attach the latitude/longitude coordinates (lat2d,lon2d) to the array
> to be plotted, do not use tfDoNDCOverlay thus allowing NCL to transform the
> data to the map projection.
>
> It looks like from your script that you're trying to use method #2, but
> were setting tfDoNDCOverlay = True. I have modified your script, and
> tweaked the map settings so that the entire data map is shown.
> Hope that helps!
> Adam
>
> On Thu, Jun 2, 2022 at 5:13 AM James Ciarlo' via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>>
>> Dear NCL users,
>>
>> I am trying to plot some data in rotated coordinates. I followed the
>> instructions on the website (
>> https://www.ncl.ucar.edu/Applications/rotatedltln.shtml) and I got to a
>> situation where I either have to switch off the terrain map, or cut out
>> part of the data.
>>
>> Specifically, the example shows that res at tfDoNDCOverlay should be True,
>> but I get the result in the image "plot1rot_true.png", when I switch it to
>> False, the map aligns well, but you can see that part of the Mediterranean
>> on the East got cut out.
>>
>> I am not sure what else to do. I have attached my script and a data file.
>>
>> The file is found here:
>> https://www.dropbox.com/sh/8l0a3b5e3pfpq13/AACiICNlYCsAdvjP8X2xpAxea?dl=0
>>
>> Thanks
>> James
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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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