To compile, you need CGAL to be installed with support for lapack
use the script:  cgal_create_makefile -d, and then : make

Program Single_estimation
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takes as input a <inputPoints.txt> which is a xyz text file 
it compute the fitting for this single entry and 
it outputs results in the <output.txt> file and on the standard std::cout

Usage is : Single_estimation <inputPoints.txt> <d_fitting>, <d_monge>" 

in_points are sampled on 0.1(x+2y)

./Single_estimation data/in_points_file.txt  2 2
./Single_estimation data/in_points_d4.txt  4 4
