GCP interface grouping

Hi all,

I’m new to this all and having problems using the GCP interface.

Firstly I get this error message when trying to upload a txt file: “Unknown projection EPSG:32650, please use a proj.4 string or UTM (for example, “WGS84 UTM 11N”) to define the projection.” I can substitute this for a different SRS definition but don’t understand why this initial version won’t work.

Secondly my GCPs all get grouped on top of one another and nowhere near where my mapping took place. The txt input I used was:

gcp01 5.41668 117.98302 0
gcp02 5.41737 117.98274 0
gcp03 5.41831 117.98480 0
gcp04 5.41742 117.98489 0
gcp05 5.41737 117.98472 0

I have followed several online tutorials and can’t see how my inputs are essentially any different - I’m sure it’s something very obvious. Apologies if I posted this in the wrong area and I hope there is enough info here to start solving the issue.

Thanks in advance,


1 Like

Try with:

+proj=utm +zone=50 +datum=WGS84 +units=m +no_defs


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