maphimbu(1)
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 (C) 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.