Hi all, On Mon, Jan 21, 2013 at 5:04 PM, Andre Joost <andre+jo...@nurfuerspam.de> wrote: > Am 21.01.2013 10:28, schrieb Pietro Rossin: >> what does it mean with Custom CRSs (CRS A and B name)? Are these only >> custom >> names used to describe Rome40 and WGS84 in my case? > > You don't have to enter anything, the plugin creates a new CRS for you.
... or you can define the names for the new custom CRSs will be created by writing their name in those fields. >> Then there are two keys on the bottom left part of the plugin window that >> are Apply CRS A -> B (direct) and Apply CRS A<- B (inverse), the first is >> to reproject from Rome40 to wgs84 an the second the opposite? > > I have not found any sense in those buttons yet. A bit of documentation good > be good ;-) Those buttons apply the selected transformation, so they change the layers and map CRSs according to that transformation. If direct is choosen then all the loaded layers with CRS equals to System_From will be changed by setting their CRSs to the custom CRS A, the map CRS instead will be changed to the custom CRS B, i.e. it reprojects layers from CRS A to CRS B using the grid file. On the contrary, choosing the inverse transformation the map CRS will be set to the custom CRS A and all the layers having CRSs equal to System_To will be changed to the custom CRS B, i.e. it reprojects layers from CRS B to CRS A using the grid file. Sorry if it is not well documented, nobody asked for it before so I supposed its behaviour was quite obvious. Regards. > Greetings, > André Joost > > > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user -- Giuseppe Sucameli _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
