[Gdal-dev] Re: Supported projections/transformation in a GUI

[Tamas Szekeres]

Yes. I don't know we have such kind of categorization prepared. I
think the best thing you can do to parse any of the files containing
the projections like proj/nad/epsg and display a list with the
available values.

Best regards,

Tamas


2007/6/1, Tomas R <monshi at home.se>:
> As I thought, no easy way...
>
> If there was, a reply would have found the way to this thread.
>
> Tomas R skrev:
> > Ok folks, here is question to crack.
> >
> > Simple idea:
> > User can pick either a file with geo-data in it or an image without.
> > If it is a file without geo-data the user is to be able to select
> > which projection/coordinate system the image is saved in and also set
> > up the coordinates of the edges of the map.  A transformation of
> > coordinates between map local projection and WGS84 will the be set up.
> >
> > My big problem is the case with no geo-data. I need to set up an
> > interface which an ordinary user can use, a user with not to much
> > experience of projections and such stuff.
> >
> > Firstly I need to sort out which, in GDAL, available projections that
> > are common. Just to reduce the list.
> > Next I need to find a friendly name to present them with.
> > If possible - sort them corresponding to where they are used, for
> > example  the user can select USA and get all the UTM-zones (and by
> > knowing the coordinates of the map select the right zone). Or replace
> > USA with a European country and their specific common projections.
> >
> > I'm a bit lost, don't know where to start. The ideas above is just
> > loose ideas.
> >
> > Suggestions? Any tools in GDAL that can help me? Anyway to look up the
> > available projections in GDAL? Anyway to sort out the "valid"
> > projections?
> >
> > Working with GDAL from C#.
> >
> > Pls
> > /tomas
>
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