[ncl-talk] Use the same data, but got two different results based on Matlab and NCL

[Dennis Shea]

Forgot ... There are a large # of missing values (_FillValue). I am
not sure how/why there are none on the Matlab plot.



On Wed, Nov 4, 2015 at 1:14 PM, Dennis Shea <shea at ucar.edu> wrote:
> Well, I am not sure how Matlab generated the plot.
>
> The golden rule of data processing is *look at your data*
>
> Just extracting an example script and plugging in a few variables does not work.
>
> ===
>
> The attached script has many 'printVarSummary' .... look at each
>
> The lat/lon coordinates have mapping infomation that you should use.
>
> ===
> There are some NCL manuals tutoorials
>    http://www.ncl.ucar.edu/Document/Manuals/
>
> Mini-Language Manual
>
> and two tutorials
>
> DKRZ: NCL Tutorial Version 1.1
>
> This is a very nice combination of the Mini-Language Manual and an
> excellent introduction to NCL graphics. We recommend this manual as a
> starting point if you are learning NCL.
>
> It was created by Karin Meier-Fleischer and Michael Böttinger of DKRZ
> (Deutsches Klimarechenzentrum). It also mentions the Climate Data
> Operators (CDO) which were created at Max Planck Institute for
> Meteorology.
>
> DKRZ: Examples and Exercises
>
>
> On Wed, Nov 4, 2015 at 10:45 AM, Wang, Chao <cxw151530 at utdallas.edu> wrote:
>> Dear Sir/Madam,
>>
>> My name is Chao. I am a PhD student in University of Texas at Dallas.
>> Recently I am using NCL to open a grib2 file downloaded from NOAA NOMADS.
>> And I used asciiwrite function to write the variables into ASCII files. Then
>> I opened these files on Matlab used quiver function to draw the picture
>> (quiver(Longitude, Latitude, Ugrd, Vgrd)). But I got the picture very
>> different from the one I got from NCL. This is the script I used to draw the
>> picture
>>
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