[Qgis-user] Projection String

[Even Rouault]

> The *+b *is the semi-minor axis right? If so, the values 298 is I think
> weird.

298.xxx is a typical value for the reverse flattening, not the semi-minor axis.
So you should use +rf instead of +b
But as those values are in fact the definition of the WGS84 ellipsoid, you 
could more simply replace the "+a=xxxx +rf=xxxx" by +ellps=WGS84

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