NAME
i.tape.tm.fast - An imagery function that
extracts Thematic Mapper (TM) imagery from tape media
(GRASS Image Processing Program)
SYNOPSIS
i.tape.tm.fast
i.tape.tm.fast help
i.tape.tm.fast help
[-q] input=name group=name
bands=value[,value,...]
[rows=firstrow-lastrow]
[cols=firstcol-lastcol] [title=name]
DESCRIPTION
i.tape.tm.fast is a program that extracts TM
imagery from tape media with different blocking factors
(its value indicates how many rows are combined into one
physical record on the tape).
i.tape.tm.fast must be run in a LOCATION_NAME with
a (x,y) coordinate system (i.e., a coordinate system with
projection 0). For further information regarding the
LOCATION_NAME type, please refer to the
imagery manual entry.
i.tape.tm.fast reads the blocking factor from the
header file as well as other parameters, such as gains and
offsets for each band, map projection, sun elevation and
azimuth, etc., and writes into history file (depending upon
the contents of the header file).
OPTIONS
This program can be run either non-interactively or
interactively. It will be run non-interactively if the user
specifies the name of input device, the name of output
group file, bands to be extracted, and optionally other
parameters (see below) on the command line using the form:
-
i.tape.tm.fast help
[-q] input=name group=name
bands=value[,value,...]
[rows=firstrow-lastrow]
[cols=firstcol-lastcol] [title=name]
where the input should be the device name on which
the tape media are mounted. The group is an
imagery group which will store the extracted TM imagery.
The bands value in a list separated by commas is
the bands the user wants to extract from the imagery. The
rows and cols represent the region which
the user wishes to extract, where the default is whole
imagery. At last an optional title is for
information only. Alternatively, the program will be run
interactively if the user types only
i.tape.tm.fast; in this case the program will
prompt the user for parameter values using the standard
GRASS
parser interface.
Flags:
- -q
- Run quietly. Supresses output of program
percent-complete messages. If this flag is not used, these
messages are printed out.
Parameters:
- input=name
- The name of the device on which the tape media
containing the imagery files mounted.
- group=name
- The name of the group, which will store the imagery
extracted from tape media.
- bands=value[,value,...]
- The bands the user wishes to extracted from the tape media.
Options: 1-7
- rows=firstrow-lastrow
- The values of first and last row of the extracting region.
Default: full imagery
- cols=firstcol-lastcol
- The values of first and last column of the extracting region.
Default: full imagery
- title=name
- The title of the extracting imagery.
Default: TM Imagery File Extracted from Tape
NOTES
Running in command line mode, i.tape.tm.fast will
overwrite the group file and support files without
prompting if the files existed.
SEE ALSO
GRASS Tutorial: Image Processing
i.group
i.tape.mss
i.tape.mss.h
i.tape.other
i.tape.tm
i.tape.spot
imagery
m.examine.tape
AUTHOR
Tao Wen, University of Illinois at
Urbana-Champaign