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MAPHIMBU

MAPHIMBU

Section: User Commands (1) Updated: October 2009
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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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
REPORTING BUGS
COPYRIGHT

This document was created by man2html, using the manual pages.
Time: 21:14:49 GMT, April 16, 2011