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Section: User Commands (1) Updated: October 2009
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maphimbu - 1-d histogram builder for numerical and text data  


maphimbu [OPTION]... [FILE]  


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  


-x <int>
x-data column (default is 1)
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.
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.
normalize data against the total sum of counts (same as option '-n' with case A forced)
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'.
compute sums and normalized sums of y-values; The total sum of all y-values is used for the normalization.
compute the arithmetic mean of y-values in the respective x-bar
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.
do reverse sorting (in combination with '-s')
print a data description header
print program version and exit
output version and copyright information
display help
display short help (options summary)

Note: this program is not intended for use in high order numerical computations.  


Report bugs to <>  


Copyright © 2003-2007, 2009 Dimitar Ivanov

License: GNU GPL version 3 or later <> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.




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