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feature.c 9a9b8230ed various spelling errors fixed 9 år sedan
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open_files.c d2b26275a0 No need to check return value from Rast_open_* 15 år sedan
param.c 9a9b8230ed various spelling errors fixed 9 år sedan
param.h 1e0c11f526 libgis: Enable the C99 bool type (#1567) 4 år sedan
param.sh 4997418ace svn propset 13 år sedan
process.c ccb032e673 r.param.scale: propagate NULL values instead of ignoring them - https://trac.osgeo.org/grass/ticket/2466 10 år sedan
r.param.scale.html 69be6c5f9a manual: comment out SVN Date tag (#200) 5 år sedan
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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.

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Modified to include constrained fitting.

Jo Wood, April, 1995

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Modified to include weighting matrix and double precision arithmetic.

Jo Wood, 9th May, 1995.

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Modified to include two separate tolerance values for feature detection.

Jo Wood, 23rd May, 1995.


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

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

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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