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.

**--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

**input**=*name***[required]**- Name of input 3D raster map
**output**=*name***[required]**- Name for output 3D raster map
**method**=*string***[required]**- Aggregate operation
- Options:
*average, median, mode, minimum, maximum, range, stddev, sum, count, variance, diversity, interspersion, quart1, quart3, perc90, quantile* **quantile**=*float*- Quantile to calculate for method=quantile
- Options:
*0.0-1.0* **window**=*x,y,z***[required]**- The size of the window in x, y and z direction, values must be odd integer numbers, eg: 3,3,3

*Neighborhood Operation Methods:*
The **neighborhood** operators determine what new
value a center voxel in a neighborhood will have after examining
values inside its neighboring voxels.
Each voxel in a 3D raster map layer becomes the center voxel of a neighborhood
as the neighborhood window moves from voxel to voxel throughout the map layer.
* r3.neighbors* can perform the following operations:

**average**- The average value within the neighborhood.
**median**- The value found half-way through a list of the neighborhood's values, when these are ranged in numerical order.
**mode**- The most frequently occurring value in the neighborhood.
**minimum**- The minimum value within the neighborhood.
**maximum**- The maximum value within the neighborhood.
**range**- The range value within the neighborhood.
**stddev**- The statistical standard deviation of values within the neighborhood.
**sum**- The sum of values within the neighborhood.
**variance**- The statistical variance of values within the neighborhood.
**diversity**- The number of different values within the neighborhood.
**interspersion**- The percentage of voxels containing values which differ from the values assigned to the center voxel in the neighborhood, plus 1.

*Neighborhood Size:*
The neighborhood moving **window** specifies which voxel surrounding any given
voxel fall into the neighborhood for that voxel.
The **window** must be three comma separated odd integers. The dimension order is: x,y,z.
For example: the parameter window=3,3,3 specifies a moving window (a cube) with 27 voxel.

* r3.neighbors* doesn't propagate NULLs, but computes the
aggregation over the non-NULL voxels in the neighborhood.

Available at: r3.neighbors source code (history)

Latest change: Thursday Feb 03 11:10:06 2022 in commit: 547ff44e6aecfb4c9cbf6a4717fc14e521bec0be

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.

Main index | 3D raster index | Topics index | Keywords index | Graphical index | Full index

© 2003-2023 GRASS Development Team, GRASS GIS 8.2.2dev Reference Manual