for leejay: do
   cde.pl -v -r<> -R<> fname1 fname1


(Aug 4, 1999, by CF; 
revised Aug. 9 '99, 
	Aug. 11 '99)

WHAT: ---------------------------------------
Computes the cross-distance exponent,
using an observation similar to Schuster's

USAGE: ---------------------------------------
   make
gives a demo;
   cde.pl  <fname1> <fname>
would give the slope of the CDE graph,
and the file fname1-fname2.points as a side effect
(as of 8/9/99) also gives the ...-llnf.eps postscript file for  plotting.
   mkpcplot.pl <f1> <f2>	makes the pair-count plot ('pcp')
   mk3plot <f1> <f2>		plots the pcp plots for the self- 
				and cross- distances
   cdeNpcp.pl <f1> <f2>		plots a combined cde and pcp plot
   sampleNpcp.pl <f1> <f2>	plots the pc-plot for several samples

To change the default values of $rmin, $rmax, $factor:
see the file 'setdefaults.pl'

SEMI-USEFUL INFO:===============================

TIMING INFO: 
    % /bin/time cdeNpcp.pl diagonal.inp mdiagonal.inp
    gave
       4:38   real 
       3:33   user
	  1.1 sys
    (both datasets have 1000 points)

DATA SETS: ---------------------------------------
democrat.inp		voting records, from UC-Irvine
republican.inp

diagonal.inp		a diagonal line
sdiagonal.inp		a small diagonal (1..50)
diagonal2.inp		same, with slope 2
mdiagonal.inp		a 'minor' diagonal (perpendicular to 'diagonal')
pdiagonal.inp		a parallel diagonal to the original on

sierpinski5K.inp	5K points from the sierpinski triangle
sier1.inp		the first 2500 of them
sier2.inp		the rest half
ss1.inp			small sierpinski: first 200 points of sier1.inp
ss2.inp			first 200 points of sier2.inp

astro2817.dat		x-y coordinates from galaxies (from Adrian Pope, cmu)
IRIS-*			the iris dataset, from UC-Irvine

Potential future features: -----------------------------------
1) Ideally, 
       cde <fname>
   should give the correlation box-count plot for this dataset,
   with self-pairs removed.
2) could also estimate the sum ( c_A,i  ^q  ) * ( c_B,i ^ p)
   for p, q given
3) automatic determination of rmin, rmax
