Name
chan_mult — multiply columns of data by a given factor
chan_add — add a given value to columns of data
Synopsis
chan_mult factor num_columns column [ column column... ] < infile > outfile
chan_add value num_columns column [ column column... ] < infile > outfile
DESCRIPTION
chan_mult will multiply all numbers in the specified columns by the given factor. The infile is an ASCII file, with columns separated by white space. The columns are numbered from 0 to (n-1). chan_add behaves analogously, but with addition rather than multiplication.
EXAMPLES
These routines are useful for converting between units in animation tables.
To multiply all but the first column of a four column file by 2.54:
chan_mult 2.54 4 1 2 3
To add ten to the first six columns of an eight-column file:
chan_add 10.0 8 0 1 2 3 4 5
To convert the second of three columns from Fahrenheit to Celsius:
chan_add -32 3 1 chan_mult 0.56 3 1
