NAME¶
r8tohdf - convert 8-bit raster images to HDF format
SYNOPSIS¶
r8tohdf [number-of-rows number-of-columns]
output-filename [-p palette-filename] [-c]
[-r] [-i] raw-raster-image-filename-1,
raw-raster-image-filename-2, ...
DESCRIPTION¶
r8tohdf converts a set of raw raster images to the HDF RIS8 format and
writes them to a file.
OPTIONS¶
- -p pallette-file
- Specify the name of the palette file.
- -c
- Run length coding. Compress the output data using run-length
encoding.
- -i
- IMCOMP Compression. Compress the output data using the IMCOMP method.
- -r
- No Compression. Apply no compression to the output data. (the
default).
EXAMPLES¶
A file named "rawras" contains a 256 x 512-byte raw raster image, and
its palette is stored in a file name "mypal". To convert the
information in these files to an RIS8 without compression and store the RIS8
in a file named "ras.hdf", enter the following r8tohdf command:
r8tohdf 256 512 ras.hdf -p mypal rawras
A 800 x 1000-byte raw raster image is stored in a file named "bigpic".
This data must be converted to a RIS8 without a palette, compressing it using
run-length encoding, then stored in a file named "bigpic.hdf". The
following command will do this:
r8tohdf 800 1000 bigpic.hdf -c bigpic
A 300 x 400 raw raster image is contained in each of the files named
"pic1", "pic2", and "pic3". To convert all three
files to RIS8s, compress them using the IMCOMP method, and store them in a
file named "pic.hdf", enter
r8tohdf 300 400 pic.hdf -i pic1 pic2 pic3
Different types of raster image data are to be stored in a file named
"ras.hdf". The image data in the file "rawras1" will be
stored without a palette. The image data sets from the file named
"rawras2" are to be stored with a palette extracted from a file
named "mypal". The images from the "rawras1" and
"rawras2" files are to be compressed using run-length encoding, and
the image in the "rawras3" file is not to be compressed. The size of
all images are 256 x 512 bytes. The following command is used to do this:
r8tohdf 256 512 ras.hdf -c rawras1 -p mypal rawras2 -r rawras3
