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Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

NAME

r.gradient - Create a gradient map

KEYWORDS

raster, gradient

SYNOPSIS

r.gradient
r.gradient --help
r.gradient output=name direction=string range=integer[,integer,...] [percentile=float] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

output=name [required]
Name for output raster map
direction=string [required]
The direction of gradient
Options: N-S, S-N, W-E, E-W, NW-SE, NE-SW
range=integer[,integer,...] [required]
Minimum and maximum values of gradient
percentile=float
Percentile to calculate (only for oblique gradient)
Options: 0-100

Table of contents

DESCRIPTION

r.gradient create a gradient map. It is able to create horizontal, vertical and oblique gradient.

EXAMPLES

To calculate vertical gradient from North to South
  r.gradient output=gradient_ns range=0,50 direction=N-S
  
To calculate horizontal gradient from East to West
  r.gradient output=gradient_ea range=10,20 direction=E-W
  
To calculate oblique gradient from North-East to South-West you have to set also the percentile option to set the slope of the gradient.
  r.gradient output=gradient_oblique range=10,20 direction=NE-SW
  

AUTHOR

Luca Delucchi, Fondazione E. Mach (Italy)

Thanks to Johannes Radinger for the code of horizontal and vertical gradient

SOURCE CODE

Available at: r.gradient source code (history)

Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55


Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

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© 2003-2022 GRASS Development Team, GRASS GIS 7.8.8dev Reference Manual