Well, I start with a CSV file containing records of numbered things (houses, parcells...) having a noun (a proper noun) and X, Y coordinates values. These names and locations have been recorded from an old paper map (X and Y are in millimeters). The geographic coverage of the map is small (around 2 x 3 km, printed onto a 210 x 300 mm page). The map shows hundreds of things worth being recorded. I would like to georeference this set of "things" in order to display them in position, overlaid on a general map. A few of them (for example chapels, churches, crossroads...) can be relatively easily located on modern, georeferenced, maps and hence, be used as ground control points. I first build a vector layer in importing this ascii file in QGIS, and I could see a correct result, points at relative good positions and labels with the nouns. But now, I have troubles in using the QGIS georeferencer, as it seems to accept only rasters (not vectors) and these rasters are supposed to be files from the computer. I would prefer to use a VMS multilayer map that would allow to take benefit of more than one single layer in the process of defining the ground control points. . Thanks for your attention and for your help.
Jacki Le dim. 19 août 2018 à 11:31, Moritz Lennert <[email protected]> a écrit : > [Please keep discussions on the list.] > > Am 18. August 2018 20:59:03 MESZ schrieb Jacki Pilon < > [email protected]>: > >Thank you Moritz. Unfortunately I cannot go further since I have bad > >responses from the OSM servers like : > >https://osm.geobretagne.fr/gwc01/service=wms > > You will have to be much more precise about what exactly you do and what > exactly are the messages you receive. > Otherwise it will be difficult for anyone to help you. > > Moritz > > > >Yours, > > > >Jacki > > > >Le ven. 17 août 2018 à 13:01, Moritz Lennert > ><[email protected]> > >a écrit : > > > >> On 17/08/18 07:58, Jacki Pilon wrote: > >> > Bonjour, > >> > I coudn't find a way to georeference a vector (with arbitrary X Y > >> > coordinates) by using either a WMS or a raster layer. Any advice ? > >> > >> https://grass.osgeo.org/grass74/manuals/g.gui.gcp.html > >> > >> It allows you to georeference a vector. If you want to use a WMS as > >> background you probably have to import it first using r.in.wms. > >> > >> Moritz > >> > >> >
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