[ncl-talk] problem for map plotting data without explicit coordinate arrays

[David Brown]

It looks like your data file has projection information included. You
might do better if you create a "native" plot (by setting
tfDoNDCOverlay to True) and you do not use the lat1d and lon1d arrays
you created. If you still have trouble, upload the data file and we
can take a look. See "Report Bugs"' under the Support tab on the NCL
web page for uploading instructions.
 -dave


On Tue, Jan 13, 2015 at 11:19 AM, Dave Allured - NOAA Affiliate
<dave.allured at noaa.gov> wrote:
> All data publishers, please note.  This is why modern conventions like CF,
> COARDS, etc. advocate for including complete coordinate arrays within
> individual data files.
>
> Lijun, you may get most accurate results if you go back to your data source,
> and request or search for lat and lon coordinate arrays.
>
> --Dave
>
> On Tue, Jan 13, 2015 at 10:53 AM, Lijun Diao <ljdiao at gmail.com> wrote:
>>
>> Hi all:
>>
>> I downloaded some data, but the data itself doesn’t have lat&lon arrays
>> except the lat&lon values for the center point and x&y in kms for the origin
>> point. I can calculate the approximate lat&lon arrays linearly. The plot and
>> my script is attached. As you can see there is blank stripes on both sides
>> of the plot. Does anyone know how to plot in a more correct way or how to
>> calcuate the acurrate lat&lon arrays?
>>
>> thanks,
>>
>> -----------------------------------------------------------------------------
>> Lijun Diao
>> ldiao at uh.edu
>> Research Assistant
>> Department of Earth & Atmospheric Sciences
>> University of Houston
>> 4800 Calhoun RD., Bldg. S&R1-312
>> Houston, TX 77204-5007
>>
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