Provided by: radiance_4R1+20120125-1.1_amd64 
NAME
total - sum up columns
SYNOPSIS
total [ -m ][ -sE | -p | -u | -l ][ -i{f|d}[N] ][ -o{f|d} ][ -tC ][ -N [ -r ]] [ file .. ]
DESCRIPTION
Total sums up columns of real numbers from one or more files and prints out the result on its standard
output.
By default, total computes the straigt sum of each input column, but multiplication can be specified
instead with the -p option. Likewise, the -u option means find the upper limit (maximum), and -l means
find the lower limit (minimum).
Sums of powers can be computed by giving an exponent with the -s option. (Note that there is no space
between the -s and the exponent.) This exponent can be any real number, positive or negative. The
absolute value of the input is always taken before the power is computed in order to avoid complex
results. Thus, -s1 will produce a sum of absolute values. The default power (zero) is interpreted as a
straight sum without taking absolute values.
The -m option can be used to compute the mean rather than the total. For sums, the arithmetic mean is
computed. For products, the geometric mean is computed. (A logarithmic sum of absolute values is used
to avoid overflow, and zero values are silently ignored.)
If the input data is binary, the -id or -if option may be given for 64-bit double or 32-bit float values,
respectively. Either option may be followed immediately by an optional count, which defaults to 1,
indicating the number of double or float binary values to read per record on the input file. (There can
be no space between the option and this count.) Similarly, the -od and -of options specify binary double
or float output, respectively. These options do not need a count, as this will be determined by the
number of input channels.
A count can be given as the number of lines to read before computing a result. Normally, total reads
each file to its end before producing its result, but this behavior may be overridden by inserting blank
lines in the input. For each blank input line, total produces a result as if the end-of-file had been
reached. If two blank lines immediately follow each other, total closes the file and proceeds to the
next one (after reporting the result). The -N option (where N is a decimal integer) tells total to
produce a result and reset the calculation after every N input lines. In addition, the -r option can be
specified to override reinitialization and thus give a running total every N lines (or every blank line).
If the end of file is reached, the current total is printed and the calculation is reset before the next
file (with or without the -r option).
The -tC option can be used to specify the input and output tab character. The default tab character is
TAB.
If no files are given, the standard input is read.
EXAMPLE
To compute the RMS value of colon-separated columns in a file:
total -t: -m -s2 input
To produce a running product of values from a file:
total -p -1 -r input
BUGS
If the input files have varying numbers of columns, mean values will certainly be off. Total will ignore
missing column entries if the tab separator is a non-white character, but cannot tell where a missing
column should have been if the tab character is white.
AUTHOR
Greg Ward
SEE ALSO
cnt(1), neaten(1), rcalc(1), rlam(1), tabfunc(1)