This is the command stda that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
stda - Simple Tools for Data Analysis (STDA)
DESCRIPTION
STDA includes some primary tools for data analysis. You can evaluate sums, averages,
integrals, derivatives, histograms or probability distribution functions of 1-d data, and
eventually plot the results. The programs are stand-alone tools (supporting the standard
UNIX input and output pipelines) intended for data processing from the command line. It
should be noted that all but one of the scripts use awk and core system utilities. For
plotting you have to install Gnuplot (see http://gnuplot.info) since 'muplot' is a wrapper
around it. In summary, the package provides utilities for straightforward analysis of data
series where a complex analytical approach is not needed and where an ultimate numerical
precision with floating-point numbers is not critical. Some general examples of
application cases include evaluating usage statistics from server logfiles, determining a
response time distribution from a series of queries to a [remote] service, producing a
plot from multiple data files, etc.
This software should be considered as an open project to be extended with new command-line
driven utilities helpful for performing common data analysis tasks. Any contributions and
suggestions are welcome.
Following programs are included in the distribution:
* maphimbu - histogram builder for 1-d numerical and text data
* mintegrate - average/sum/integral/derivative of 1-d numerical data
* mmval - find minimum and maximum value in a dataset
* muplot - plot a multi-curve figure from multiple dataset using Gnuplot
* nnum - produce a series of equally separated integers or floats
* prefield - prepare input file for 'muplot' to plot 2-d fields by arrows
EXAMPLES
- Evaluate the current apache2 logfile and make an unique list of the hostnames
(respectively ip-addresses) sorted by the total number of their http requests:
maphimbu -rs2 /var/log/apache2/access.log
- On a X terminal plot the probability function and the cumulative distribution function
of a 'sin(x)' data sample:
nnum -3.14159 3.14159 0.00001 "sin(x)" "%.17f %.7f" | maphimbu -d0.01 -x1 -ns1 |
mintegrate -d0.01 -x1 -y3 -S | muplot lp - 1:3,4
COPYRIGHT
Copyright © 2009, 2011-2014 Dimitar Ivanov <[email protected]>
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.
Use stda online using onworks.net services
