[GRASS-user] Editing POINTS file vs wxGUI.gcp

["Peter Löwe"]

Hi Moritz,

you are of course right, provided that the GRASS GUI can be used.
This case is a bit different, as a scripted workflow is needed, without user input through the GUI.
THe GCPs for all four corners of the image are known as WKT.

The rasters are not strictly north-south / east-west aligned, gdal_translate can't be used, as far as I understand.

Peter 


<peter.loewe at gmx.de>


> Gesendet: Freitag, 17. August 2018 um 12:57 Uhr
> Von: "Moritz Lennert" <mlennert at club.worldonline.be>
> An: "Peter Löwe" <peter.loewe at gmx.de>, "Markus Neteler" <neteler at osgeo.org>
> Cc: "GRASS user list" <grass-user at lists.osgeo.org>
> Betreff: Re: [GRASS-user] workflow to import/georectify binary remote sensing data: POINTS file editing
>
> On 17/08/18 10:11, "Peter Löwe" wrote:
> > Hi Markus, all,
> > 
> > thanks for the feedback. The new temporary location option is a great feature.
> > 
> > However, I wonder whether having to manually create a POINTS file within the locations file structure is (still) the proper way to handle the rectification process in GRASS 7.x. This approach dates back to GRASS 4.x. There are no references to it in the recent documentation, so its kind of a (old-fashioned?) hack.
> 
> 
> Do you mean how to georeference without definined ground control points ?
> 
> Normally, for creating GCPs, you would use 
> https://grass.osgeo.org/grass74/manuals/wxGUI.gcp.html.
> 
> What do you see as a more "modern" approach ?
> 
> Moritz
> 
> >