Hi, Another possible solution it's to create a custom projection where you include the false origin information (false northing and false easting. Then set your layers to use that custom projection.
For more information on how to create a custom projection in QGIS, check this page of the official documentation: https://docs.qgis.org/3.4/en/docs/user_manual/working_with_projections/working_with_projections.html#id12 For more information about the false northing and easting, check PROJ documentation: https://proj.org/usage/projections.html?highlight=false%20north#false-easting-northing Alexandre Neto QGIS Support www.qcooperative.net A domingo, 17/11/2019, 10:10, Lens Paul <paul.l...@gmx.com> escreveu: > Hi Andrea, > > False origins happens often with local topographical surveys, with also a > false altitude origin. Architectural plans are sometimes even more tricky: > rotated, or with a centimetric or millimetric scale instead of a metric > scale. A way is to transform the data with a CAD software when available. > Even then, problems can arise e.g. when rescaling some objects. > > I suppose a workaround in your case would be to use the "move" command > and to snap to a point drawn at the correct coordinates. This could be > cumbersome when there are many layers to edit, which is often the case, > unless you import the dxf as a unique layer.... > > If your data consist merely of point data (no polylines), it should be > possible, after conversion of the dxf in a shapefile, to create the X, Y > attributes using the field calculator, and to recalculate these attributes > with the same tool. > > In the case of polylines, there is the possibility to extract vertices. > But I do not know if there is a possibility to recreate the polylines after > the recalculation of the X, Y attributes. > > Dxf conversion is a complicated subject. The evolution of the capabilities > of QGIS in that field is amazing. Many thanks to the developers for that. > > Hope this helps, > > Paul > Le 13/11/2019 à 14:04, Andrea Peri a écrit : > > Hi, > We have a dxf containings geograph data in false.origin . > I'm searching a solution to put a kind of origin (x,y) to sum to every > point of the data. Is possible to set an origin.to a dataset in qgis ? > > Thx. > Andrea. > > > _______________________________________________ > Qgis-user mailing listqgis-u...@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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