[Qgis-user] Georeferencer

[Agustin Lobo]

Perhaps I did not explain myself: the question
is providing correct projected coordinates (i.e., UTM)
for one given point in a vector map that has arbitrary coordinates. If the
vector map has been digitized (hence it is oriented and
projected but has arbitrary coordinates), it should be a matter of
just shifting the arbitrary coordinates according to the
point that has been entered.
You might ask, why he did not get the correct coordinates
for the first point at digitizing? The answer is: because
I was digitizing a jpg file with no coordinates, then found
one conspicuous point in orthorectified aerial imagery.

I've solved the problem using another software, but would like
to find a solution within QGIS for the future.

Thanks!

Agus

Carson Farmer wrote:
> 
>> As this is a digitized map (done outside QGIS), I have to define the 
>> projection
>> and provide the coordinates for one point, which could
>> be understood as the most elementary warping (just a shift).
>> Perhaps I can do this with the editing tools?
> 
> I think so...
> If I understand your question/problem correctly... you could also create 
> the point using the delimited text plugin (specifying the exact 
> coordinates this way), then delete the 'misplaced' point, and union the 
> delimited text layer with the current digitized layer to 'add' the point 
> back in...
> 
> Cheers,
> 
> Carson
> 

-- 
Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: Agustin.Lobo at ija.csic.es
http://www.ija.csic.es/gt/obster