Input file name
Output file name
The size field is specified with four arguments,
SIZE=(SL,SS,NL,NS)
where:
SL is the starting line of the input file to be read.
SS is the starting sample to be read of each input line.
NL is the number of lines to be read.
NS is the number of samples to be read for each line.
For example, SIZE=(1,1,30,20)
would read the first 30 lines and 20 samples of the input picture.
These parameters can also be specified separately using SL, SS, NL,
and NS.
OFORM (Keyword) specifies the format to which the input is to be converted.
The following are the valid values:
BYTE Unsigned 8-bit binary integer.
HALF Signed 16-bit binary integer.
FULL Signed 32-bit binary integer.
REAL VAX single precision floating point (REAL*4).
DOUB or REAL8 VAX double precision floating point (REAL*8).
COMPLEX Two single precision floating point values
representing the real and imaginary parts of
a complex number (COMPLEX*8).
SO SO is a keyword followed by two values (real or
integer) which specify the slope (SL) and offset
(OF) of the transformation to be applied between
the input and output data sets in the sense:
OUT = IN * SL + OF
(Note that for output formats of BYTE, HALF, FULL,
the specified value of OF will be increased by 0.5
for positive values of OF and will be decreased by
0.5 for negative values of OF to correct for
truncation. This additional 0.5 will not appear
in the picture label.) The default is SO=(1.0,0.0).
IRANGE is a keyword followed by two values which specify two values in the input which map to two values in the output (ORANGE must also be specified). IRANGE and ORANGE values are converted into equivalent SO values by "C". If SO is specified, then IRANGE and ORANGE are ignored. If none of SO, IRANGE or ORANGE are specified, the default transformation is performed: SO=(1.0,0.0).
ORANGE is a keyword followed by two values which are used in conjunction with the two values specified by IRANGE in order to determine a slope and offset for a linear transformation. See IRANGE.