bpsetwt - modifies rays' weights
setwt uses an IRAF-compatible parameter interface.
This parameter specifies the name of the bpipe format input ray
file. If the filename is the string stdin, it reads the UNIX
standard input stream.
This parameter specifies the name of the output ray file. If the
filename is the string stdout, it writes to the UNIX standard
output stream.
The value to apply to the rays' weights.
The operator which applies the operand to the weight. It may be one
of add, sub, mul, div, or eq (as the parameter inteface
is stupid and cannot handle extra =, -, or + characters on
the command line).
setwt is used to modify the weights of rays in a ray stream.
D. Jerius <djerius@cfa.harvard.edu>