[Qgis-user] gfx in WSG 84 added to another CRS (EPSG:3021)

[Bo Victor Thomsen]

 1. Choose a CRS for your _project_ using the menu "Settings" -->
    "Project properties" --> Tab "Coordinate Reference System (CRS) and
    choose the CRS from the dialog. Remember to enable "on the fly CRS
    transformation"
 2. Open your layer(s). Don't think about the projection here.
 3. Right-click on each of your layer(s) in the "Layers" dialog and
    choose "Set layer CRS". If necessary, choose the CRS for the
    individual layer.

In some cases the CRS for a layer can't be inferred from the information 
in the layer's datafile or QGIS can't read it correctly. Executing step 
3 for each "problem" layer corrects this problem.

Regards
Bo Victor Thomsen
Aestas-GIS
Denmark


Den 21-09-2012 09:23, Johan Nilsson skrev:
> When I click Layer-->'Add vector layer.....' I can browse for files, 
> shp, gpx, and so on, but never chose an CRS in that menu. My 
> Background map are in RT90 coordinate system in meters approx 
> 1500000,6500000 m but gpx files come to 17  and 60 m (not degree), way 
> ot of the map...
>
> /Cheers
>
> 2012/9/21 leyan ouyang <ouyang.leyan at hotmail.com 
> <mailto:ouyang.leyan at hotmail.com>>
>
>     Yes it is possible, the option "on-the-fly reprojection" does just
>     that. Choose the main CRS as the project CRS (it will be used for
>     distance calculations, etc.). Then when you add a layer you can
>     choose its CRS individually, QGIS will do the transformation.
>
>     Regards,
>
>     Leyan
>
>     ------------------------------------------------------------------------
>     Date: Fri, 21 Sep 2012 09:08:05 +0200
>     From: joni8135 at gmail.com <mailto:joni8135 at gmail.com>
>     To: qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org>
>     Subject: [Qgis-user] gfx in WSG 84 added to another CRS (EPSG:3021)
>
>
>     Hi.
>     I can transform gpx file from a GPS (WSG84) to an old swedisch CSR
>     EPSG:3021 (RT90 2,5 gon V metric coordinate system)) shape file,
>     but I whant to let the program transform on the fly.
>
>      I know that year 1999 Silicon graphic had it on there 'super
>     coomputers' and GIS-softwate, and I also see that QGIS have under
>     menue:
>     *Settings-->Options-->CRS*-tab have an option to check 'on the fly
>     reprojection' in option.
>
>     Under options-->CRS can you define default project CRS and defaut
>     CRS to what your add in layers, but If you have a lot of old files
>     with diffenent CRS it could be errors. Now Sweden is in transition
>     from RT90 to SweRef99 (very near WSG84)
>
>     Is it possible to add vector files with other CRS, or even rasters
>     to a project without transform it?
>
>     /Cheers
>
>
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