Markus Neteler b62c0692eb r.param.scale manual: example fix; figure style cosmetics 8 سال پیش
..
CHANGES db49180dd7 welcome to GRASS 7.0.svn 17 سال پیش
Makefile d6700ffb2c Update LIBES, DEPENDENCIES from linkage database 15 سال پیش
README db49180dd7 welcome to GRASS 7.0.svn 17 سال پیش
close_down.c 6c41b6394b Re-write raster history implementation 14 سال پیش
cols.sh 4997418ace svn propset 13 سال پیش
disp_matrix.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 16 سال پیش
feature.c 9a9b8230ed various spelling errors fixed 9 سال پیش
find_normal.c ccb032e673 r.param.scale: propagate NULL values instead of ignoring them - https://trac.osgeo.org/grass/ticket/2466 10 سال پیش
interface.c eccf07b124 add various keywords to modules 9 سال پیش
main.c 208dc8c324 more metadata (merge from devbr6) 16 سال پیش
nrutil.c cef093c56b Don't include <grass/raster.h> where not needed 15 سال پیش
nrutil.h 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 16 سال پیش
open_files.c d2b26275a0 No need to check return value from Rast_open_* 15 سال پیش
param.c 9a9b8230ed various spelling errors fixed 9 سال پیش
param.h 68cbd9e577 update private definitions of pi, rad2deg, deg2rad to use global definitions in gis.h 8 سال پیش
param.sh 4997418ace svn propset 13 سال پیش
process.c ccb032e673 r.param.scale: propagate NULL values instead of ignoring them - https://trac.osgeo.org/grass/ticket/2466 10 سال پیش
r.param.scale.html b62c0692eb r.param.scale manual: example fix; figure style cosmetics 8 سال پیش
r_param_scale_morph.jpg a2934553ff screenshot added 16 سال پیش
write_cats.c 87cfda0cca More error handling: 15 سال پیش
write_cols.c 793139729e rasterlib: fns from color_rule.c renamed, see 15 سال پیش

README

r.param.scale

GRASS module that extracts terrain parameters from a DEM.
Uses a multi-scale approach by taking fitting quadratic
parameters to any size window (via least squares).

Jo Wood, 27th November, 1994.

-------

Modified to include constrained fitting.

Jo Wood, April, 1995

-------

Modified to include weighting matrix and double precision arithmetic.

Jo Wood, 9th May, 1995.

-------

Modified to include two separate tolerance values for feature detection.

Jo Wood, 23rd May, 1995.


-------
Still to do:
Fix bug when `constrain through central cell' option selected.
Create colour tables for all output files (presently only on features).

-------

See also Java Code in 'LandSerf' that implements the same procedure
(http://www.geog.le.ac.uk/jwo/research/LandSerf).

-------

Usage:
r.param.scale [-c] in=name out=name [s_tol=value] [c_tol=value]
[size=value] [param=name] [exp=value] [zscale=value]

Flags:
-c Constrain model through central window cell

Parameters:
in Raster surface layer to process
out Output raster layer containing morphometric parameter
s_tol Slope tolerance that defines a `flat' surface (degrees)
default: 1.0
c_tol Curvature tolerance that defines `planar' surface
default: 1.0
size Size of processing window (odd number only)
default: 3
param Morphometric parameter to calculate
options: elev,slope,aspect,profc,planc,longc,crosc,minic,maxic,
feature
default: elev
exp Exponent for distance weighting (0.0-4.0)
default: 0.0
zscale Vertical scaling factor
default: 1.0