To build the example, run in a Terminal:

cd /path-to-example/
cmake .
make


Example of use :

Computation of the persistent homology with Z/2Z coefficients of the Rips complex on points 
sampling a Klein bottle:

./rips_persistence ../../../data/points/Kl.txt -r 0.25 -d 3 -p 2 -m 100

output:
210  0 0 inf
210  1 0.0702103 inf
2  1 0.0702103 inf
2  2 0.159992 inf


Every line is of this format: p1*...*pr   dim b d
where
 	p1*...*pr is the product of prime numbers pi such that the homology feature exists in homology with Z/piZ coefficients. 
	dim is the dimension of the homological feature,
    b and d are respectively the birth and death of the feature and
   


with Z/3Z coefficients:

./rips_persistence ../../../data/points/Kl.txt -r 0.25 -d 3 -p 3 -m 100

output:
3  0 0 inf
3  1 0.0702103 inf

and the computation with Z/2Z and Z/3Z coefficients simultaneously:

./rips_multifield_persistence ../../../data/points/Kl.txt -r 0.25 -d 3 -p 2 -q 3 -m 100

output:
6  0 0 inf
6  1 0.0702103 inf
2  1 0.0702103 inf
2  2 0.159992 inf

and finally the computation with all Z/pZ for 2 <= p <= 71 (20 first prime numbers):

 ./rips_multifield_persistence ../../../data/points/Kl.txt -r 0.25 -d 3 -p 2 -q 71 -m 100

output:
557940830126698960967415390  0 0 inf
557940830126698960967415390  1 0.0702103 inf
2  1 0.0702103 inf
2  2 0.159992 inf