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

[Tomas R]

That is one approach.

But the one I think I will start with is selecting a number of "common" 
projection and add more as more users use the application and request 
support for their native map. Will of course support all the in gdal 
available projections/transformatins from the start but probably not 
from an easy-to-use interface.

oh - and Tamas - when you answer to my post I see my email is included 
in the header. The damage is done - but why is it there? A setting in my 
program (Thunderbird) or in yours?


/Tomas
Tamas Szekeres skrev:
> 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
>>
>> _______________________________________________
>> Gdal-dev mailing list
>> Gdal-dev at lists.maptools.org
>> http://lists.maptools.org/mailman/listinfo/gdal-dev
>>