Hi all,
The BNG (British Natial Grid) based on the airy Ellipsoid but GDAL did not know
this parameter.
+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000
+ellps=airy +datum=OSGB36 +units=m +no_defs
Probably, gdal does not know this parameter: +ellps=airy
But gdal know these parameter:
ellipsoid_code ellipsoid_name
7001 Airy 1830
7002 Airy Modified 1849
When I try to convert a Geotiff file from BNG to WGS84, I get an exception
according to the ellipsoid.
Thanks for your help.
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