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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