olga@ginko.cecer.army.mil (Olga Waupotitsch) writes:
We are in a process of updating raster programs, and gis and display
libraries to process floating point raster maps with additional
information about data cells.
Michael Shapiro has documented most of the design and it
is on my home web page on www.cecer.army.mil
on request of some users I put fp.tar.Z on moon.
NOTE: right now there are 2 files on moon:
fp_main.tar.Z
fp_alpha.tar.Z
This is a tar file of all the files changed in
GARSS source tree so far. To unpack it, you have to be in your
$SRC directory (the one that has display, raster, mapdev,...
subdirectories)
The above you have to do with fp_main.tar.Z
(i.e. cp fp_main.tar.Z <GRASS_BASE>/src
cd <GRASS_BASE>/src
uncompress fp_main.tar.Z
tar -xvf fp_main.tar
)
For fp_alpa.tar.Z do the same thing, only you have to cd to
your src.alpha directory.
(i.e. cp fp_alpha.tar.Z <GRASS_BASE>/src.alpha
cd <GRASS_BASE>/src.alpha
uncompress fp_alpha.tar.Z
tar -xvf fp_alpha.tar
After unpacking you need to recompile the whole GRASS
by running GISGEN.
WARNING: this is grass4.2 code, if you still want to keep
grass4.1 and apply update packages, you might want to
make a whole new grass source tree, copy everything over
and make it grass4.2 as opposed to grass4.1.
It is the best if you have a version of grass4.1 with all 5 update packages
applied already before you unpack these files on top of it.
All the GRASS commands you are used to will still work
as they did before except that newly
modified programs will treat 0's in your old maps as no data cells.
However all new maps created with modified programs such as
r.slope.aspect for example, will distinguish between 0's and no-data cells.
All unmodified prgrams after recompilation will work with new and old
raster maps the same way they always did.
(See web page for more information)
The source code is in a stage of developement and I am only giving it out
for people who asre willing to test it. When we change more programs
here, or fix some problems we might find, I will put an update on ftp site.
Helena Mitasova's group had converted sg.3d plus some of their interpolation
programs and r.flow to work in the new environment. these changes are not
included in fp.tar.Z (because they are not part of main GRASS source tree)
If you need these changes, please email Helena, and she will put them
on ftp site as well.
Olga