r.in.polygrass - Online in the Cloud

PROGRAM:

NAME

r.in.poly - Creates raster maps from ASCII polygon/line/point data files.

KEYWORDS

raster, import

SYNOPSIS

r.in.poly
r.in.poly --help
r.in.poly input=name output=name [title=phrase] [type=string] [null=integer]
[rows=integer] [--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:
input=name [required]
Name of input file; or "-" to read from stdin

output=name [required]
Name for output raster map

title=phrase
Title for resultant raster map

type=string
Output raster type
Options: CELL, FCELL, DCELL
Default: CELL

null=integer
Integer representing NULL value data cell

rows=integer
Number of rows to hold in memory
Default: 4096

DESCRIPTION

r.in.poly allows the creation of GRASS binary raster maps from ASCII files in the current
directory containing polygon, linear, and point features.

The input file is an ASCII text file containing the polygon, linear, and point feature
definitions. The format of this file is described in the INPUT FORMAT section below.

The number of raster rows to hold in memory is per default 4096. This parameter allows
users with less memory (or more) on their system to control how much memory r.in.poly
uses. Usually the default value is fine.

NOTES

The data will be imported using the current region settings to set the new raster map’s
bounds and resolution. Any features falling outside the current region will be cropped.
The region settings are contolled with the g.region module.

The format is a simplified version of the standard GRASS vector ASCII format used by
v.in.ascii.

Polygons are filled, i.e. they define an area.

Input Format
The input format for the input file consists of sections describing either polygonal
areas, linear features, or point features. The basic format is:
A <for polygonal areas>
easting northing
.
.
.
= cat# label
L <for linear features>
easting northing
.
.
.
= cat# label
P <for single cell point features>
easting northing
= cat# label
The A signals the beginning of a filled polygon. It must appear in the first column. The
L signals the beginning of a linear feature. It also must appear in the first column.
The P signals the beginning of a single cell point feature. Again, it must appear in the
first column. The coordinates of the vertices of the polygon, or the coordinates defining
the linear or point feature follow and must have a space in the first column and at least
one space between the easting and the northing. To give meaning to the features, the "="
indicates that the feature currently being processed has category value cat# (which must
be an integer) and a label (which may be more than one word, or which may be omitted).

EXAMPLE

An area described by four points:
A
591316.80 4926455.50
591410.25 4926482.40
591434.60 4926393.60
591341.20 4926368.70
= 42 stadium

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