09-08-2008
Thanks for your suggestions. I can assure you it isn't homework. I work in a fMRI lab and we use linux/unix based software for doing analysis and I just started and am trying to slowly learn how to write scripts to separate our dicom files to make my life easier.
Most of your suggestions are still foreign to me. So I will try to work on it, but it might take me a while to even get up to that point.
Thanks,
Megan
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STDA(1) User Commands STDA(1)
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 dis-
tribution 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 sum-
mary, 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 eval-
uating usage statistics from server logfiles, determining a response time distribution from a series of queries to a [remote] service, pro-
ducing 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 data set
* muplot - plot a multi-curve figure from multiple data by 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 %.6g |awk '{ print $1, sin($1) }' | maphimbu -d0.01 -x2 -ns1 |mintegrate -d0.01 -x1 -y3 -S |muplot
lp - 1:3,4
COPYRIGHT
Copyright (C) 2009, 2011-2012 Dimitar Ivanov <dimitar.ivanov@mirendom.net>
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.
stda 1.1.1 February 2012 STDA(1)