On 25/01/08 02:18, Hamish wrote:
Markus:
The question is if we want to introduce Fortran code again in the
main repository.
are the results of f2c human-readable? Or for conversion to C would it
need a rewrite by hand?
I've never found f2c results very useful to create "real" C code. If you
Am Donnerstag, den 24.01.2008, 17:23 -0800 schrieb Dylan Beaudette:
> On Thursday 24 January 2008, Brad Douglas wrote:
> > On Thu, 2008-01-24 at 14:58 -0800, Dylan Beaudette wrote:
> > > On Thursday 24 January 2008, Markus Neteler wrote:
> > > > On Jan 24, 2008 7:25 PM, Dylan Beaudette <[EMAIL PRO
On Thursday 24 January 2008, Brad Douglas wrote:
> On Thu, 2008-01-24 at 14:58 -0800, Dylan Beaudette wrote:
> > On Thursday 24 January 2008, Markus Neteler wrote:
> > > On Jan 24, 2008 7:25 PM, Dylan Beaudette <[EMAIL PROTECTED]>
wrote:
> > > > On Thursday 24 January 2008, Markus Neteler wrote:
>
Markus:
> The question is if we want to introduce Fortran code again in the
> main repository.
are the results of f2c human-readable? Or for conversion to C would it
need a rewrite by hand?
Hamish
Be a
On Thu, 2008-01-24 at 14:58 -0800, Dylan Beaudette wrote:
> On Thursday 24 January 2008, Markus Neteler wrote:
> > On Jan 24, 2008 7:25 PM, Dylan Beaudette <[EMAIL PROTECTED]> wrote:
> > > On Thursday 24 January 2008, Markus Neteler wrote:
> > > > I have added m.eigensystem to GRASS Addons SVN with
On Thursday 24 January 2008, Markus Neteler wrote:
> On Jan 24, 2008 7:25 PM, Dylan Beaudette <[EMAIL PROTECTED]> wrote:
> > On Thursday 24 January 2008, Markus Neteler wrote:
> > > I have added m.eigensystem to GRASS Addons SVN with a slightly
> > > updated Makefile. Grab here:
> > > http://trac.o
On Jan 24, 2008 7:25 PM, Dylan Beaudette <[EMAIL PROTECTED]> wrote:
> On Thursday 24 January 2008, Markus Neteler wrote:
> > I have added m.eigensystem to GRASS Addons SVN with a slightly
> > updated Makefile. Grab here:
> > http://trac.osgeo.org/grass/browser/grass-addons/m.eigensystem
> >
> > or
On Thursday 24 January 2008, Markus Neteler wrote:
> HamishB wrote:
> > Michael Perdue wrote:
> >> I think what your asking is if anyone knows how to apply the
> >> transformation matrix that was used to derive you pca components in
> >> reverse to get back to the original coordinate system. Someth
HamishB wrote:
>
> Michael Perdue wrote:
>> I think what your asking is if anyone knows how to apply the
>> transformation matrix that was used to derive you pca components in
>> reverse to get back to the original coordinate system. Something like
>> what is done in a decorrelation stretc
Michael Perdue wrote:
> I think what your asking is if anyone knows how to apply the
> transformation matrix that was used to derive you pca components in
> reverse to get back to the original coordinate system. Something like
> what is done in a decorrelation stretch?
> Hopefully someone mor
On Thu, 2007-12-06 at 15:47 -0700, Michael Perdue wrote:
> if the i.pca is capable of divulging the eigenvectors, you can use
> r.mapcalc to apply them in reverse. else;
FYI, I modified i.pca awhile back to write eigenvectors to all output
histories and properly handle null cells.
--
73, de B
Michael and Dylan,
Thanks for the response.
The image fusion method that we are trying to implement on GRASS
is briefly described in the paper below and also quite a few
others that I have skimmed through.
Multisensor image fusion in remote sensing: concepts, methods
and applications by POHL an
Venka,
I think what your asking is if anyone knows how to apply the
transformation matrix that was used to derive you pca components in
reverse to get back to the original coordinate system. Something like
what is done in a decorrelation stretch?
Hopefully someone more knowledgeable than I c
On Thursday 06 December 2007 08:05:28 am Venkatesh Raghavan wrote:
> Dear All,
>
> Commonly described method for image fusion in
> in several publications involves inverse PCA transform
> to get the new R,G,B bands of multispectral image from
> the principle components.
>
> Does any of you know a s
Dear All,
Commonly described method for image fusion in
in several publications involves inverse PCA transform
to get the new R,G,B bands of multispectral image from
the principle components.
Does any of you know a script or an algorithm to implement
inverse PCA in GRASS?
Thanks in advance.
Ve
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