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QGis: How to calculate the coordinates needed to georeferenced a map?
Posted: Mon Sep 05, 2016 6:42 pm
by harry_vdk
Hi,
With in the corners of a topo map there are reference point, but how to fill the coordinates?
RE: QGis: How to calculate the coordinates needed to georeferenced a map?
Posted: Tue Sep 06, 2016 5:32 pm
by WildCatNL
Haven't tested this, but try installing the Lat Lon Tools plug-in (from QGis' plug-in manager); it might allow you to enter lat lon coordinates and scroll there.
William
RE: QGis: How to calculate the coordinates needed to georeferenced a map?
Posted: Tue Sep 20, 2016 3:22 pm
by harry_vdk
Found a different way.
Preparation:
- First make within qgis a print composer definition with the area of interest.
- have a marker on every corner.
- Export a tif image with the print composer.
- Georeference the generated tif and use the 4 corner markers as a reference point.
- Save the reference points.
From now select the needed layers:
- Export the tif
- Load the tif and the reference points within the Georeferencer tool, process the data, save the new tif.