I don't know of any documentation for this. I guess just look at
existing examples. Perhaps make a test case and rectify them in.
That's what I did when working out the format for the GUI versions of
this. You'll have to make a group and put the file into the group
folder.
Michael
______________________________
Michael Barton, Professor
Professor of Anthropology
Director of Graduate Studies
School of Human Diversity & Social Change
Center for Social Dynamics & Complexity
Arizona State University
Tempe, AZ 85287-2402
USA
voice: 480-965-6262; fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton
On Mar 4, 2008, at 11:32 AM, Nicolas MERLET wrote:
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Michael
Barton
Sent: Tuesday, March 04, 2008 6:38 PM
To: [email protected]
Subject: Re: [GRASS-dev] image rectification from command line only ?
On Mar 4, 2008, at 10:00 AM, [EMAIL PROTECTED] wrote:
Date: Tue, 4 Mar 2008 17:04:27 +0100
From: "Nicolas MERLET" <[EMAIL PROTECTED]>
Subject: [GRASS-dev] image rectification from command line only ?
To: <[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="us-ascii"
hi all,
i need to rectify an image automatically (i assume using
i.points and
i.rectify). as far as i've been able to see, i.points is to use in
graphical
monitor mode ? so does anyone know how to use it from the command
line (and
only from the command line) ?
thanks for helping...
nicolas
i.points lets a user interactively set ground control points (GCPs)
for an unrectified image, using a rectified image. This particular
process cannot be automated since it is interactive by definition.
However, if you already know the ground coordinates of a set of xy
points for an image, you can build a POINTS file and i.rectify will
georectify the image from the command line.
Michael
that would be enough as my GCP are pre-calculated. however i haven't
found
any documentation about the POINTS files structure. where can i find
it ? (i
just have http://grass.itc.it/gdp/html_grass63/i.rectify.html)
moreover, assuming we use i.rectify there's no paramater to give
points, so
i suppose i just have to copy my POINT file in my image group so that
i.rectify will be able to find it ?
again, thank you very much for helping !
Nicolas
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