[ncl-talk] plotting country outline with shapefiles

[S Br]

Hi Dave,
Thanks for your reply.
I have now compared the diagnostic results between the two computers and
the below are the results.
*Computer#1:*
(0) ======================================================================
(0) Filename: "file_gor_2011.shp"
(0)   Geometry type: polygon
(0)   # of features: 1
(0)   Min/max lat:     51.29/  51.69
(0)   Min/max lon:     -0.51/   0.33
(0)   Variable names and their types:
(0)       geometry : integer
(0)       segments : integer
(0)       x : double
(0)       y : double
(0)       label : string
(0)       name : string
(0)       code : string
(0) ======================================================================
*Computer#2:*
(0) ======================================================================
(0) Filename: "file_gor_2011.shp"
(0)   Geometry type: polygon
(0)   # of features: 1
(0)   Min/max lat:     -0.51/   0.33
(0)   Min/max lon:     51.29/  51.69
(0)   Variable names and their types:
(0)       geometry : integer
(0)       segments : integer
(0)       x : double
(0)       y : double
(0)       label : string
(0)       name : string
(0)       code : string
(0) ======================================================================

I could see in one computer (computer#2 above) that the latitude values are
replacing the longitude values and vice versa, and that may be the reason
the country outlines are not displaying here.

Could you please suggest how to solve this issue? I am using the same data,
scripts and only difference is the computer.

Thank you.
SB


On Wed, Dec 9, 2020 at 5:30 PM Dave Allured - NOAA Affiliate <
dave.allured at noaa.gov> wrote:

> It would be better to apply debugging techniques to narrow down the
> problem, rather than to speculate as to the cause.  Use *addfile* to see
> if NCL can read the shapefile.  Use diagnostic print statements to examine
> the shapefile structure in memory.  Use *gsn_add_polygon* to see if NCL
> can draw a simple outline.
>
> To understand the structure, refer to the shapefile documentation at the
> top of the NCL shapefiles example page.  That mentions a special procedure
> *print_shapefile_info* which will print additional useful details.
> Compare diagnostic results between your two computers.  Good luck.
>
>
> On Wed, Dec 9, 2020 at 1:16 AM S Br via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Hi All,
>> I am trying to plot a figure using the shapefile. Everything is working
>> fine with the NCL script but it doesn't draw the country outline given as a
>> shapefiles. However, the same script works fine in another computer and
>> draws the required country outline using the shapefile.
>> What could be the possible reason that the NCL script works fine but
>> fails to draw the country outline using shapefiles without showing any
>> error?
>>
>> Both the computers are installed with the NCL 6.6.2.
>>
>> Thank you.
>> SB
>>
>
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