[GRASS5] [bug #2889] (grass) i.rectify doc comments

Request Tracker grass-bugs at intevation.de
Wed Jan 5 15:47:55 EST 2005


this bug's URL: http://intevation.de/rt/webrt?serial_num=2889
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i.rectify comments

   By selecting the 1st ORDER option, the user may select the order of

Don't say 1st. Say X or something.


   transformation desired: Select order of transformation --> 1st
   Order 2nd Order 3rd Order

   The program will immediately recalculate the RMSE and the number of
   points required.

  Linear affine transformation (1st order transformation)

          x' = ax + by +c
          y' = Ax + Bt +C

   The a,b,c,A,B,C are determined by least squares regression based on
   the control points entered.  This transformation applies scaling,
   translation and rotation. It is NOT a general purpose
   rubber-sheeting, nor is it ortho-photo rectification using a DEM,

say what to use for those

   not second order polynomial, etc.  It can be used if (1) you have
   geometrically correct images, and (2) the terrain or camera
   distortion effect can be ignored.

there should be a way to rectify with just two points BTW.

PS: there should be a way to on the monitor show point numbers next to points in
a group/xxx/POINTS file.


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To: grass-bugs at intevation.de
Subject: i.rectify doc comments
From: Dan Jacobson <jidanni at jidanni.org>
Date: Thu, 06 Jan 2005 02:41:48 +0800
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