Re: [netcdf-hdf] NetCDF to ShapeFile

Hi Hal Finkel,

Thank you for your answer.
I finally succeed to transform my data.
As you told me I use gdal-ogr to create the final ShapeFile.

Regards

Arnaud

On Thu, Nov 12, 2009 at 7:37 PM, Hal Finkel <hal.finkel@xxxxxxxx> wrote:

> Arnaud,
>
> Take a look at the GDAL OGR library:
>
> http://www.gdal.org/
> http://www.gdal.org/ogr/
>
> which has python bindings. This link has installation instructions and
> links to a python-based tutorial:
>
> http://trac.osgeo.org/gdal/wiki/GdalOgrInPython
>
>  -Hal
>
> Arnaud Vandecasteele wrote:
>
>> Hi all,
>>
>> I would like to know if it's possible to read data from a netcdf file and
>> export it into a EsriShapefile File. The ShapeFile i a common file format in
>> the GIS World.
>> I'm trying to get the latitude, longitude and a determinate value of a
>> netcdf file. But I don't know exactly how to do it.
>> I succeed to open and read a netcdf file in python but i don't know how to
>> export the data.
>> Here is my simple script :
>>
>> import Scientific.IO.NetCDF as nc
>> from Numeric import *
>> import sys
>>
>> try :
>>    ncFile = nc.NetCDFFile("tos_O1_2001-
>> 2002.nc <http://2002.nc>","r")
>>
>> except :
>>    print "can't open the file"
>>    sys.exit(1)
>>
>> try :
>>    print "################# Dimensions #################"
>>    print ncFile.dimensions.keys()
>>
>>    print "################# Variables #################"
>>    print ncFile.variables.keys()
>>    #return ['time_bnds', 'lat_bnds', 'lon', 'lon_bnds', 'time', 'lat',
>> 'tos'
>>
>>    print "################# Var Dim #################"
>>    tos = ncFile.variables["tos"]
>>    print tos.dimensions
>>    #return : ('time', 'lat', 'lon')
>>
>>
>>    tosValue = tos.getValue()
>>
>> except :
>>    ncFile.close()
>>
>>
>> I also tried to use the *ncdump* and *ncks* utilities and I've been able
>> to get a TXT file of the data but i can't use directly to transform them in
>> shapefile.
>>
>> Do you know how I could do that?
>>
>>
>> Best regards
>>
>>
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>>
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>


-- 
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Van De Casteele Arnaud
Mines Paris Tech - CRC
Sophia-Antipolis
0698 24 25 29
SIG - WebMapping - SOLAP - BI
Web Site : http://geotribu.net/