On Sun, 2 Jun 2019 at 17:50, Ert Four <[email protected]> wrote: > > I'm a little out of my league here, I'm not a developer, but was pointed here > from the QGIS-user list. > > My question is: Does any coordinate or location data get embedded in the > image file if I use Project > Save as Image or Composer > Export as > Image/PDF/SVG (other than what is literally seen in the image)? > > My question is primarily for 2.14.3 now, but later will have the same concern > for the 3.x series when we upgrade. > > (I know about the option to check "World file on" and create a separate world > file. What I need is to make sure there is no identifying info whatsoever > from the project file in the image file itself.)
yes - regardless of that setting, the outputs are georeferenced and have coordinates baked in* (* depending on format support. SVG doesn't, certain raster formats may not -- check with GDAL whether embedded georeferencing of these is possible. It is for all the common ones at least). Nyall > > Eg, say I have a basemap like OpenStreetMap open for a country and I load > points in another layer that are inside that country. Then I zoom in on a > group of points from my data layer, I turn off the basemap layer, and make a > map with just my data points. I want to preserve the relative spatial > relationships between my points but not reveal where in the world the map > came from. If I publish this image file, might the metadata or anything else > embedded in the file reveal the location? > > So far, the QGIS-user members who've responded and I have found no > indications that this type of data is included, but I'm posting here in case > anyone who is familiar with that code could confirm that. Sorry I'm not able > to read the code myself. > > For the work we do, it's critically important we don't unknowingly publish > specific locations. For now I'm taking screenshots to be sure nothing is > transmitted, but that's a limiting workaround. > > Thank you, as I said in my first post to the QGIS-user list, I very much > appreciate QGIS and its community! > > Fwiw, thread on the user list starts here: > https://lists.osgeo.org/pipermail/qgis-user/2019-May/043218.html > Continues here in June archive: > https://lists.osgeo.org/pipermail/qgis-user/2019-June/043224.html > _______________________________________________ > QGIS-Developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
