[GRASS5] new r.in.bin[2]
Markus Neteler
neteler at geog.uni-hannover.de
Fri Nov 10 12:25:08 EST 2000
Hi all,
Bob Covill <bcovill at tekmap.ns.ca> has improved the r.in.bin:
r.in.bin [-s] input=name output=name [title="phrase"] [mult=value]
[bytes=value] north=value south=value east=value west=value r=value
c=value [subst=old,new]
Flags:
-s Signed data (high bit means negative value)
Parameters:
input Bin raster file to be imported
output Name for resultant raster map
title Title for resultant raster map
mult Multiplier for bin data
default: 1.0
bytes Number of bytes per cell (1, 2, 4)
default: 1
north Northern limit of geographic region
south Southern limit of geographic region
east Eastern limit of geographic region
west Western limit of geographic region
r Number of rows
c Number of columns
subst Replace 1st value by 2nd one.
default: 0,0
--------------
from his mail:
It could still use some testing and cleaning up, but it would be good
to try on some different data. The program require the tiff library
to build, so there is a -ltiff flag for the linker in the
Gmakefile. The Tiff library contains routines for byte swapping which
I use in the code.
I added a simple routine that automatically checks the file size
against the bytes parameter and if it does not match it exits and
suggests a new bytes parameter.
The program has three flags, -s for signed data (I have not tested
this option yet), -f to import floating point data, and -b to byte
swap data during import.
The same parameters are used as the old program. The subst parameter
has changed slightly, as it now wants a single value that it will
substitute null for.
--------------
I think these improvements are valuable and should "ignore" the code-freeze
as there is a demand for a good binary import tool.
I have checked into CVS:
src/raster/r.in.bin2
If the code is working, we should replace the original
src/raster/r.in.bin
Regards
Markus Neteler
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