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This is the command v.qcountgrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


v.qcount - Indices for quadrat counts of vector point lists.

KEYWORDS


vector, statistics, point pattern

SYNOPSIS


v.qcount
v.qcount --help
v.qcount [-g] input=name [layer=string] [output=name] nquadrats=integer radius=float
[--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:
-g
Print results in shell script style

--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:
input=name [required]
Name of input vector map
Or data source for direct OGR access

layer=string
Layer number or name (’-1’ for all layers)
A single vector map can be connected to multiple database tables. This number
determines which table to use. When used with direct OGR access this is the layer
name.
Default: -1

output=name
Name for output quadrat centers map (number of points is written as category)

nquadrats=integer [required]
Number of quadrats

radius=float [required]
Quadrat radius

DESCRIPTION


v.qcount chooses nquadradius ants circular quadrats of radius radius such that they are
completely within the bounds of the current region and no two quadrats overlap. The
number of points falling within each quadrat are counted and indices are calculated to
estimate the departure of point locations from complete spatial randomness.

NOTES


This program may not work properly with lat-long data. It uses hypot() in two files:
count.c and findquads.c.

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