rotating raster maps

You can use i.points or i.vpoints to register the photo to known
coordinates or vector/raster files.

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From grass-lists-owner@moon.cecer.army.mil Thu Apr 20 12:04:39 1995

Date: Thu, 20 Apr 1995 12:23:39 -0400 (EDT)
From: BARNES DAVID <barnesd@lab.cc.wmich.edu>
Subject: rotating raster maps
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If anyone could help... I have many air photos that were scanned in as tif
files that were imported into GRASS as raster files. The problem is that
the north end of the photos were not orientated to the top of the map or
in this case, the top of the screen. The plan is to geo-reference these
images to UTM coords and to rectify the images. I have not been able to
find a program within GRASS that would allow me to rotate these images.
Does such a program exist? Or do the photos need to be scanned in with
north orientated to the top of the screen?

Any comments would be appreciated. Thanks.

  **********************************************************
  * My Address *
  * *
  * DAVE BARNES *
  * Geology Dept. *
  * Western Michigan University *
  * Kalamazoo, MI 49008 *
  * *
  * email address *
  * *
  * barnesd@lab.cc.wmich.edu *
  **********************************************************

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