# ministat
A small tool to do the statistics legwork on benchmarks etc.

Written by Poul-Henning Kamp, lured into a dark Linux alley and clubbed over the head and hauled away to Github by yours truly.

## Build & Install

There should be no dependencies besides the standard libraries and a functional tool-chain.

	$ cd ministat/
	$ make
	$ make PREFIX=/usr install
	install -m 0755 ministat  /usr/bin/ministat

## Usage
The FreeBSD man page is very relevant, pursue it [here](http://www.freebsd.org/cgi/man.cgi?ministat).

	Usage: ministat [-C column] [-c confidence] [-d delimiter(s)] [-ns] [-w width] [file [file ...]]
		confidence = {80%, 90%, 95%, 98%, 99%, 99.5%}
		-C : column number to extract (starts and defaults to 1)
		-d : delimiter(s) string, default to " \t"
		-n : print summary statistics only, no graph/test
		-q : print summary statistics and test only, no graph
		-s : print avg/median/stddev bars on separate lines
		-w : width of graph/test output (default 74 or terminal width)

## Example
From the FreeBSD [man page](http://www.freebsd.org/cgi/man.cgi?ministat)

	$ cat << EOF > iguana
	50
	200
	150
	400
	750
	400
	150
	EOF

	$ cat << EOF > chameleon
	150
	400
	720	
	500
	930
	EOF

	$ ministat -s -w 60 iguana chameleon
	x iguana
	+ chameleon
	+------------------------------------------------------------+
	|x      *  x	     *	       +	   + x	            +|
	| |________M______A_______________|			     |
	| 	      |________________M__A___________________|      |
	+------------------------------------------------------------+
	    N	  Min	     Max     Median	   Avg	     Stddev
	x   7	   50	     750	200	   300	  238.04761
	+   5	  150	     930	500	   540	  299.08193
	No difference proven at 95.0% confidence