[gdal-dev] reading Arc/Info Binary Grid
r.denham at f...
Wed Nov 15 18:55:25 EST 2000
it appears there are two ways to specifiy the projection information
for UTM here. The one you might be more familiar with looks like this:
f2 [site1biggrd2m]> cat prj.adf
This contain no parameters, and zone information etc is referenced
directly. The other:
> > f2 [64676964grd1l]> cat prj.adf
> > PROJECTION UTM
> > UNITS meters
> > SPHEROID WGS84
> > DATUM WGS84
> > PARAMETERS
> > 153 0 0
> > -40 0 0
is actually the result of exporting an imagine .img file to a grid. It
seems that enough information is there to set the zone and offset ok (for
example the central meridian of zone 56 is 153, and presumably -40 is
equivalent to a y offset of -10000000.
I think I will try to use native arc/info grids, rather than the converted
ones from imagine, but this might be something to think about in future.
thanks for you help.
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