I have a georeferenced jpeg, I:
1. Open it
2. Convert into 8bit, specify treshold, analyze particles, select a region
3. Measure and transfer table to R
If I just send the selection as a SpatialPolygon dataframe to R it works.
But if I try to add a georeference it doesn't work. As the file to select for the georeference I tried selecting the original georeferenced JPEG, I tried saving as geotif.
The resulting output in R are two files (showing X, Y) that when plotted show one point.
What is the correct way to specify a georeference?
If that doesn't work another alternative would be to load the *.jpeg with the import script (use the "Grid importer" import) and then georeference the SpatialPolygons after the transfer (if that is possible). Or in R simply by using the commands described here: