[GRASS5] i.points and i.rectify question

[Markus Neteler]

(cc grass5 list)

On Mon, Nov 17, 2003 at 01:30:13PM +0100, Michael Barton wrote:
> Markus,
> 
> This is helpful. Thanks much.
> 
> The odd thing is that i.points3 is automatically built from source and 
> shows up in the binaries too. However, AFAICT it only works correctly 
> with i.rectify3 (i.e., creates a slightly different text file output 
> from i.points using latlong coordinates regardless of the 
> $GISBASE/location projection). But i.rectify3 is NOT automatically 
> built and does not show up in the binaries. It seems like there should 
> be both or neither.
> 
> Cheers
> 
> Michael Barton

OK, I have commented both image3 lib and i.points3 in the list
of default modules.

BTW: The image3 lib looks like crying for

 indent -nbad -bap -bbb -nbbo -nbc -br -bli1 -bls -cbi0 -ncdb -nce \
 -ci4 -cli0 -ncs -d0 -di0 -fc1 -nfca -hnl -i4 -ip4 -l80 -lc80 -lp -npcs \
 -pi4 -nprs -npsl -sbi0 -sc -nsob -ss -ts8

to polish the code.
Maybe there should be additionally added 'polishing comments' which
are pretty odd in the image3 lib.

Markus

 
> 
> On Monday, November 17, 2003, at 12:13 PM, Markus Neteler wrote:
> 
> > On Sun, Nov 16, 2003 at 08:31:42PM -0400, Bob Covill wrote:
> >> Hello,
> >>
> >> There is a difference between i.rectify (& i.points) and i.rectify3.
> >> Unfortunately, I have never figured out which one is "more" correct. I
> >> think that i.rectify3 post dates i.rectify and was intended to 
> >> replace it??
> >>
> >> The i.rectify3 and i.points3 programs both use the image3 library in
> >> src/libes. This library utilizes the proj library and converts
> >> coordinates on the fly between lat. long. and the users coordinate
> >> system. Unfortunately, i.rectify3 is not built by default, but the
> >> source is still there.
> >
> > Some clarification (as far as I understood it):
> >
> > #######################
> >
> > Family "old" in 4.x:
> > - i.points (raster target map), i.vpoints (vector target map)
> > - i.rectify, i.rectify2
> > - imagery lib
> >
> > Family "new-but-incomplete" in 4.x:
> > - i.points3 (aims at merging i.points and i.vpoints, introducing
> >              DEM support for LANDSAT ortho imagery)
> > - i.rectify3
> > - image3 lib (implements new methods, aims at integrating the
> >   orthophoto stuff)
> >
> > #######################
> >
> > Family "old" in 5.x:
> > - i.points (raster target map), i.vpoints (vector target map)
> > - i.rectify (which is the code of i.rectify2 with fixes, old
> >              i.rectify deleted)
> > - imagery lib
> >
> > Family "new-but-incomplete" in 5.x:
> > - see 'Family "new-but-incomplete" in 4.x'
> >   with some fixes from Bob Covill
> >
> > #######################
> >
> > Summary 5.x: i.points works, i.vpoints works (a few bugs inside),
> >              i.rectify works
> >
> >              image3 lib, i.points3, i.rectify3 may work, highly 
> > untested
> >              promising, contains tons of debug code, was left in a 
> > stage
> >              of uncompleteness.
> >
> >> We probably need to decide which set of programs is more up to date 
> >> (and
> >> accurate). My preference has been i.points3 and i.rectify3 but I may 
> >> be
> >> way off on this.
> >
> > I agree. But it will require some work, to get the promising image3 lib
> > functional. Efforts are welcome :-)
> >
> > Markus
> >
> >
> ____________________
> C. Michael Barton, Professor
> Department of Anthropology
> PO Box 872402
> Arizona State University
> Tempe, AZ  85287-2402
> USA
> 
> Phone: 480-965-6262
> Fax: 480-965-7671

-- 
Markus Neteler     <neteler at itc.it>       http://mpa.itc.it
ITC-irst, Istituto per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18        -       38050 Povo (Trento), Italy