Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
NAME
r.pi.corr.mw - Moving window correlation analysis.
KEYWORDS
raster
SYNOPSIS
r.pi.corr.mw
r.pi.corr.mw --help
r.pi.corr.mw input1=name input2=name output=name size=integer max=integer [title="phrase"] [--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:
- input1=name [required]
- Name of input raster map
- input2=name [required]
- Name of input raster map
- output=name [required]
- Name for output raster map
- size=integer [required]
- Neighborhood size
- Options: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25
- max=integer [required]
- In order to receive more information of the decimal places, set it to e.g. 1000
- title="phrase"
- Title for resultant raster map
r.pi.corr.mw provides information concerning the correlation
of pixels inside a moving window between two raster files.
It calculates correlation of two raster maps by calculating correlation
function of two corresponding rectangular areas for each raster point and
writing the result into a new raster map.
This module computes the correlation between two raster files but
unlike
r.pi.lm for moving windows of a specific size. This
module is partly based on
r.neighbors and
r.covar.
An example for the North Carolina sample dataset:
Correlation of all pixels within a 7x7 sized window of two rasters
(elevation and slope). The output is multiplied by 10000 for higher
precision
g.region rast=elevation -p
r.pi.corr.mw input1=slope input2=elevation output=corrwin1 size=7 max=10000
r.colors corrwin1 col=bgyr
r.pi.index,
r.pi.lm,
r.pi
Programming: Elshad Shirinov
Scientific concept: Dr. Martin Wegmann
Department of Remote Sensing
Remote Sensing and Biodiversity Unit
University of Wuerzburg, Germany
Port to GRASS GIS 7: Markus Metz
SOURCE CODE
Available at:
r.pi.corr.mw source code
(history)
Latest change: Monday Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55
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© 2003-2023
GRASS Development Team,
GRASS GIS 7.8.9dev Reference Manual