[ncl-talk] I can't overlay a contour on a map plot

[Tao Lu]

Dear Mary

Thank your for your kind reply and beautiful code file.

I couldn't overlay map and contour correctly.
Maybe I should choose gsn_csm_contour_map.

Thank you very much.
I will take care about attaching large file next time.

Yours sincerely,
Tao

> El 17 ene 2017, a las 7:12, Mary Haley <haley at ucar.edu> escribió:
> 
> Dear Tao,
> 
> In the future, please be careful about including large attachments to emails that you send to ncl-talk.  There are hundreds of users on this list and not everybody's mailers can handle these large files.
> 
> I'm not sure what you mean by your question.  Did you get a bad plot or an error message?
> 
> A few issues that I see is that your "radar" data contains missing values, and in fact, it contains both -999 and -9999.
> 
> I've included a new version of your script that is somewhat simplified.  I wanted to be sure your data was plotting correctly. Here are some things I did:
> I read the data as floats instead of strings thinking this would make the data read faster, but it doesn't really.
> 
> I set a missing value for your radar data.
> 
> Instead of calling gsn_csm_map, gsn_csm_contour, and overlay, I just called gsn_csm_contour_map, but this is not necessary.
> 
> I drew the contours both as smoothed and raster contours, again, for debugging purposes.
> 
> I added markers (third plot) to show where the data is >= 0.1, just for debugging purposes.
> As far as I can tell, the radar data seems to be plotting correctly.
> 
> Are you getting different results?
> 
> 
> 
>> On Mon, Jan 16, 2017 at 4:40 AM, Tao Lu <hakufu.asano at gmail.com> wrote:
>> 
>>  crain_composite_2015.09.09.00.00_UTCDear ncl-talk
>> 
>> As the title said, please help me find out why I can't overlay a contour on a map.
>> 
>> I attached the script and data needed.
>> 
>> Please help me.
>> 
>> Tao
>> 
>> -- 
>> ******************************************************
>> Tao Lu    (M. Eng)
>> Laboratory of River Engineering and Hydrology,
>> Dept. of Civil and Environmental Engineering,
>> Graduate School of Science and Engineering,
>> Chuo University
>>  
>> 1-13-27,Kasuga,Bunkyo-ku,Tokyo
>> 112-8551, Japan
>> TEL: 03-3817-1805;   Phone: 070-2188-7509
>> Email1: hakufu.asano at gmail.com
>> Email2: lutao at civil.chuo-u.ac.jp
>> *****************************************************
>> 
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> 
> <test_complex.000003.png>
> <test_complex.000002.png>
> <test_complex.000001.png>
> <simple_plot.ncl>
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