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.help binfil Jul86 proto
.ih
NAME
binfil -- create a 16 bit binary raster file from an IRAF image
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USAGE
binfil input
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PARAMETERS
.ls input
The list of input images to be converted.
.le
.ls scale_fact = 1.0
A multiplicative scale factor to be applied to each pixel during the
conversion process. This parameter provides the means to minimize loss
of precision when converting from the dynamic range of the IRAF image
pixels to the dynamic range of the output 16-bit signed integer,
-32768 to 32767.
.le
.ls header = no
Prepend a short descriptive header to the output binary raster file?
.le
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DESCRIPTION
BINFIL generates a simple signed 16-bit binary raster file
from IRAF images. BINFIL can be useful when programs other than IRAF
applications are to be used to examine the data. The format of the resulting
file is a simple string of pixels, with the exception that the first
90 bytes or 45 words may optionally form a minimal header.
The header elements are stored as follows:
.nj
.nf
word 1 : nrows
word 2 : ncols
word 3 : IRAF pixel type flag
word 4-13 : reserved space
word 14-45: image title (ASCII 64 bytes)
.fi
.ju
Pixels from the input images are converted to short integers after scaling
by the scale_fact parameter. The resultant pixel values are limited to the
maximum range of a short integer and then written to the binary file.
The output binary file assumes the name of the input image with an appended
".b" to indicate binary.
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EXAMPLES
Convert the IRAF image irafimage to the binary file irafimage.b.
.nj
.nf
cl> binfil irafimage scale=0.01
.fi
.ju
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TIME REQUIREMENTS
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BUGS
Only the first 64 characters of the image title are placed in the binary file
header.
There is no way to specify the output binary file names.
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SEE ALSO
irafil
.endhelp
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