Le dimanche 16 décembre 2012 14:30:06, David Verbyla a écrit :
> I am a newbie to OGR/OSR using Python 2.7.2, please excuse my ignorance:
>
> I'm having problems creating spatial reference using either .ImportFromEPSG
> or .ImportFromESRI(prjfile string).
> Yet .SetWellKnownGeogCS works fine.
>
> from osgeo import ogr
> import osr,os
> testSR = osr.SpatialReference()
> testSR.SetWellKnownGeogCS("WGS84")
> print testSR.ExportToPrettyWkt()
> #returns
> #GEOGCS["WGS 84",
> # DATUM["WGS_1984",
> #....and so on...
>
> testSR.ImportFromEPSG(4326)#returns 6
Works for me. My bet is that, in your configuration, the GDAL_DATA environement
variable does not point to the path where the GDAL .csv files are stored.
> print testSR.ExportToPrettyWkt() #returns zero length string
>
> prjFile = open('c:/test/GCS_WGS84.prj')
> strPrj = prjFile.readline() #returns string with len 145
> testSR.ImportFromESRI(strPrj)#returns 5
Yes, ImportFromESRI() has a particular interface. It takes an array of
strings, not a string.
So use testSR.ImportFromESRI([strPrj])
> print testSR.ExportToPrettyWkt() #returns zero length string
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