NAME
maphimbu - 1-d histogram builder for numerical and text data
SYNOPSIS
maphimbu [OPTION]... [FILE]
DESCRIPTION
This program produces 1-d histograms from numerical or text data input.
It can be also used to estimate the probability distribution function
of a numerical variable - see
http://en.wikipedia.org/wiki/Probability_density_function.
OPTIONS
-x <int>
x-data column (default is 1)
-X treat hole line as one string (single data record)
-y <int>
y-data column (default is 2); It is considered only when
combined with ’-m’ or ’-S’
-d <float|int>
delta size (dx-resolution) in case of numerical data; Keep in
mind that 2 is not the same as 2.0: in the first case the
numbers are treated as integers, in the latter as floats.
-n normalize the result A) non-numerical data: n(x) =
counts(x)/sum_of_counts B) numerical data: the normalized
probability density func.
is P(-INF < x <INF) = Int_[-INF:INF] P(x)*dx = 1 ; For the
numerical integration an open x-data interval is assumed.
-N normalize data against the total sum of counts (same as option
’-n’ with case A forced)
-U normalize the result with x-range mapped to unit; The x-values
are mapped to the interval [0:1], respectively Int_[0:1] P(x)*dx
= 1; This option is mutually exclusive with ’-n’.
-S compute sums and normalized sums of y-values; The total sum of
all y-values is used for the normalization.
-m compute the arithmetic mean of y-values in the respective x-bar
-C center histogram bars (shifts x-axis by 0.5*dx)
-s <int>
sort output numerically using the specified column; It is not
working correctly if header output.
-r do reverse sorting (in combination with ’-s’)
-H print a data description header
-V print program version and exit
--version
output version and copyright information
--help display help
-h display short help (options summary)
Note: this program is not intended for use in high order numerical
computations.
REPORTING BUGS
Report bugs to <gnu@mirendom.net>
COPYRIGHT
Copyright © 2003-2007, 2009 Dimitar Ivanov
License: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.