[Qgis-user] Coordinate transform

[Micha Silver]

David J. Bakeman wrote:

> I have some shape files that are in seconds rather than decimal
I'm not sure what you mean here. A shapefile is not "in seconds" or 
"decimal degrees". The geometry part (*.shp) is a binary representation 
of X-Y coordinates, as simple numbers. If the shapefile also has a *.prj 
file, then that should contain its projection information.
If you have attribute columns (in the *.dbf part of the shapefile) with 
X-Y coordinates, then you can format these columns any way you like 
using, for example, Openoffice Calc. But this will *have no effect* on 
the geographic location of the features in the shapefile.
So, the important question is: do the shapefiles overlay correctly? If 
not, then you need to reproject one shapefile to the projection of the 
others.
Hope that's clear...
-- 
Micha
> degrees.  Can I create a proj4 setup that'll match them with my 
> WGS84(+proj=longlat +ellps=WGS84 +no_defs) shape files?  The only 
> thing that's different from the WGS84 is the seconds instead of 
> decimal degrees.  I tried to add a unit specification but that didn't 
> work.
>
> Thanks.
>
>
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-- 
Micha Silver
Arava Development Co. +972-52-3665918
http://www.surfaces.co.il