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Re: IDL-Python bridge with GDAL/OGR [message #93690 is a reply to message #93689]

Fri, 30 September 2016 11:52

Jim Pendleton
Messages: 165
Registered: November 2011

Senior Member

On Friday, September 30, 2016 at 12:21:16 PM UTC-6, Gordon Farquharson wrote:
> OK. I think I figured it out.
>
> IDL> osr.SpatialReference.ImportFromProj4(srs, '+proj=utm +zone=10 +ellps=WGS84 +datum=WGS84 +units=m +no_defs')
> 0
> IDL> osr.SpatialReference.ExportToWkt(srs)
> PROJCS["UTM Zone 10, Northern Hemisphere",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY[ "EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG", "8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG ","9108"]],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator "],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian ",-123],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting ",500000],PARAMETER["false_northing",0],UNIT["Meter",1]]
>
> But, I'm confused. Why can't I call methods of the srs object, like one does on Python?
>
> Gordon

Instead of the syntax
IDL> srs = osr.SpatialReference()
what if you try the following?
IDL> srs = osr.SpatialReference

The error message indicates that by calling the object creation, you're getting a reference to the proxy SWIG object instead of a reference the underlying python object.

Just a guess.

Jim P.

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[Message index]

		IDL-Python bridge with GDAL/OGR By: Gordon Farquharson on Fri, 30 September 2016 10:51
		Re: IDL-Python bridge with GDAL/OGR By: Gordon Farquharson on Fri, 30 September 2016 11:21
		Re: IDL-Python bridge with GDAL/OGR By: Jim Pendleton on Fri, 30 September 2016 11:52
		Re: IDL-Python bridge with GDAL/OGR By: Gordon Farquharson on Fri, 30 September 2016 12:02

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