man r3.in.ascii () - Convert a 3D ASCII raster text file into a (binary) 3D raster map layer

NAME

r3.in.ascii - Convert a 3D ASCII raster text file into a (binary) 3D raster map layer

SYNOPSIS

r3.in.ascii

r3.in.ascii help

r3.in.ascii input=string output=string [nv=string] [type=string] [precision=string] [compression=string] [tiledimension=string]

Parameters:

"input=string
Ascii raster file to be imported
"output=string
Name for G3d raster map
"nv=string
String representing NULL value data cell (use 'none' if no such value) Default: none
"type=string
Data type used in the output file Options: default,double,float Default: default
"precision=string
Precision used in the output file (default, max, or 0 to 52) Default: default
"compression=string
The compression method used in the output file Options: default,rle,none Default: default
"tiledimension=string
The dimension of the tiles used in the output file Default: default

DESCRIPTION

Parameters:

"type
Data type used in the output file Options: default, double, float
"precision
Precision used in the output file Options: default, max, 0-52
"compression
Note that the none option only specifies that neither LZW nor RLE is used for compression. It does not turn off the compression all together. G3D does not support non-compressed files. Options: default, rle, none
"tiledimension
The dimension of the tiles used in the output file. The format is: XxYxZ
"nv
Specifies which value to convert to NULL-value. If the specified value is none, no conversion is performed. Default is none.
"input
Path and name of ASCII file to be imported
"output
Name of the G3D output map

NOTES

The format for the ASCII file:

north: floating point

south: floating point

east: floating point

west: floating point

top: floating point

bottom: floating point

rows: integer

cols: integer

levels: integer

This header is followed by the cell values in floating point format organized in rows with constant col and level coordinate. The rows are organized by constant level coordinate. Individual cell values are separated by space or CR.

NOTE: Currently, after the file has been imported, the stored values are compared with the original data. This feature is used to find bugs in the library at an early stage and will be turned off as soon as confidence has built up.

AUTHORS

Roman Waupotitsch, Michael Shapiro, Helena Mitasova, Bill Brown, Lubos Mitas, Jaro Hofierka

SEE ALSO

r3.out.ascii, s.to.rast3

Last changed: $Date: 2004/08/10 08:35:00 $

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