Hi,
QGIS can reproject rasters on the fly. I believe from Version 1.7x on -
definitely with the trunk version.
However, if you use Google maps or Openstreetmap through the OpenLayers
plugin you fixed to their projection.
Reprojecting your own data to their projection should still work
though.
If it doesn't, please provide more details - it may be a bug then.
Andreas
On Thu, 1 Mar 2012 09:53:50 +0000, M.E.Dodd wrote:
I want to show a detailed map of buildings and vegetation over a
background image e.g. openstreetmap or google etc. Don't think qgis
can do on the fly transformation of rasters at moment so assume I
have
to geocode the detailed map using epsg:900913 so it can be shown with
openstreetmap. Converted a set of fixed point locations from original
map into google's x and y then did the geocoding in qgis and plotted
over openstreetmap. The individual points then came out in the
correct
place but the map itself was shown about 19km too far north. If I'd
had made a mistake in the x,y coordinates or the coordinate system
then the points should not be in the correct place so I am a bit
mystified as to what has happened and how to go about fixing it.
The map I am trying to georeference is a .tiff with transparency
hoping that this would allow the details to show over the background,
however the 'transparent' part is showing up black at the moment so
some adjustment here needed too.
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The Open University is incorporated by Royal Charter (RC 000391), an
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Andreas Neumann
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8624 Grüt (Gossau ZH)
Switzerland
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