[ncl-talk] Not a recognized type

[Andrew Kren - NOAA Federal]

Thanks Dave.

On Tue, Nov 16, 2021 at 5:00 PM Dave Allured - NOAA Affiliate <
dave.allured at noaa.gov> wrote:

> NCL currently reads only OGR data types Integer, Integer64, Real, and
> String from shapefiles.  In particular, OGR types Date and DateTime are
> *not* supported.
>
> You might be able to read that variable with the help of an external
> program, ogrinfo <https://gdal.org/programs/ogrinfo.html>.  It is part of
> GDAL <https://gdal.org>.  If you have it installed, then first test this
> on the unix command line.  The spaces inside the single quotes are
> important.
>
>     ogrinfo -al -geom=NO 610temp_latest.shp | grep ' Fcst_Date '
>
> If that works, then invoke it within NCL, and extract only the data
> values, like this:
>
>     cmd = "ogrinfo -al -geom=NO 610temp_latest.shp | grep ' Fcst_Date '
>  | cut -f2 -d="
>     fdate = str_strip (systemfunc (cmd))
>
> Test that command to ensure that it is reading fields in the same order as
> NCL.  If not, you might try using one of the *ogrinfo* query options, and
> looping over the field dimension.
>
>
> On Sun, Nov 14, 2021 at 8:59 PM Andrew Kren - NOAA Federal via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Has anyone found a possible workaround for reading a variable from a file
>> (shapefile) in which the recognized type (none) is not known?
>>
>> On Sun, Oct 31, 2021 at 12:50 PM Andrew Kren - NOAA Federal <
>> andrew.kren at noaa.gov> wrote:
>>
>>> Hi there,
>>>
>>> I am plotting shapefile data from a shapefile. Two of the variables that
>>> show up when doing an ncl_filedump have 'none' in front of the names,
>>> meaning that ncl does not know the type, be it string, float, integer, etc.
>>> When I tried to grab the variable, not surprisingly I got the error message,
>>>
>>> fatal:Variable <Fcst_Date> in file <610temp_latest> does not have a
>>> recognized type: cannot get value
>>>
>>>
>>> Is there a way to get around this and retrieve the variable? Or am I
>>> stuck? I tried to look online to see if others had this issue but was not
>>> able to find anything.
>>>
>>> Thanks,
>>> --
>>>
>>> Andrew Kren
>>> Meteorologist
>>> NOAA's National Weather Service
>>> Raleigh Forecast Office
>>> 1005 Capability Drive, Suite 300
>>> Raleigh, North Carolina 27606
>>> voice: 919-326-1035
>>> mailto: andrew.kren at noaa.govhttp://www.weather.gov/rah
>>>
>>>

-- 

Andrew Kren
Meteorologist
NOAA's National Weather Service
Raleigh Forecast Office
1005 Capability Drive, Suite 300
Raleigh, North Carolina 27606
voice: 919-326-1035
mailto: andrew.kren at noaa.govhttp://www.weather.gov/rah
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