JaeSub Hong, 2003-2005
Please report any problem or suggestion at jaesub@head.cfa.harvard.edu
Refer to 
	J. Hong, E.M. Schlegel & J.E. Grindlay, 
	2004 ApJ 614 p508 and references therein
 
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Quantile analysis routines: 
	2 independent platforms are available - perl & IDL
	(C version in future)

perl: 
	quantile.pl : quantile calculator
	src.txt : example src file
	bkg.txt : example bkg file

	grid.pl : quantile grid generator (requires sherpa)
	grid.sl : a sherpa-slang file required for grid.pl

	test.rmf : example rmf file
	test.arf : example arf file
	test_powerlaw.rdb : example grid (powerlaw)
	test_bremss.rdb : example grid (thermal bremss)

IDL: 
	quantile.pro: quantile calculator
     	example.pro: example of using quantile.pro

	plot_grid.pro: an example routine to plot the grid pattern
	rdrdb.pro: RDB file reader for plot_grid.pro

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Version History

ver 1.6: Feb 2005
	- A bug fix in quantile.pl
		If multiple identical x values crash interpolations, 
		Add "simplify" function to remove mutiple x values except
		for two bounding values and correct interpol routine.

ver 1.5: Nov 2004
	Now comes with a grid generator (grid.pl, grid.sl).
	By modeling spectra with sherpa, grid.pl calculates a series of
	quantile values, which can be used to generate grid patterns of
	quantile color-color diagram for a given detector response.

	minor correction added : grid points are more evenly distributed now

ver 1.2: Aug 2004
	Minor bug fix

ver 1.1: Feb 2004
	Bug fix for $n_net < 1.0
	More output : src, bkg and net counts, and ratio
	fix a bug: the range option uses ":" for separator 
		e.g) -range x.x:y.y

ver 1.0: Nov 2003
	Initial release

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Future plan

	1. Advanced routines for quantile and error calculation

	2. C version : 
		do we really need this? 
		well, compiling is so pain in the a...

		Oh, Lord! Grant me patience.  
		And uuuh, please, hurry.