Hello fellow OSMers
A hopefully straightforward newbie question for you...
I'm currently uploading various new polygons via shapefiles created in
Quantum GIS. These use the WGS84 (EPSG:4326) projection, which Quantum
defines as:
+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0
A fellow mapper is doing similar, great stuff mapping administrative
boundaries (Parishes etc) from Ordnance Survey, and setting the
projection with the following parameters:
+proj=longlat +ellps=WGS84 +datum=WGS84 +zone=30 +no_defs
Because of the different parameters (i.e. I have +towgs84=0,0,0, and he
has +zone=30), there is a slight offset in data we are creating in the
same areas.
The question is: which one of us is correct?
Thanks for your help
Steve Peters (aka SemanticTourist)
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