[ncl-talk] plotting country outline with shapefiles

[Rick Brownrigg]

Hi,

That result is very strange indeed. What are computers 1 and 2, i.e., what
is the output of:

   uname -a

And just to be certain, what is the output of this on each computer:

  cd ...to-directory-where-file_gor_2011.shp-resides....
  ls -l file_gor_2011.shp

Finally, can you send me file_gor_2011.shp (recall that means the .sph,
.shx, .dbf files)?

Rick

On Tue, Jan 5, 2021 at 5:53 AM S Br via ncl-talk <ncl-talk at mailman.ucar.edu>
wrote:

> 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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