[GRASS-user] Georectify problem

[Moritz Lennert]

On 30/07/08 02:00, Adam Dershowitz wrote:
> The problem that I am running into 
> is that only the middle half or so of the jpg is being rectified.  

> Do I have to set some region or something to get it all to work?

Yep, exactly.

AFAICT, the georectify tool calls i.rectify with the -c flag (line 1366 
of gui/tcltk/gis.m/georect.tcl), which means "Use curr. region settings 
in target location". So you need to set the correct location in the 
target location.

I'm not sure I understand why this is so. It would seem to be more 
intuitive to run without that flag and thus have i.rectify "determine 
the smallest window which covers the image", because otherwise the user 
has to identify target region extents manually...

Michael, any special reason for using -c ?

Maybe this could be made into an option ?

Moritz