Least Square Approximation

A computer program in C++ programming language to compose a least square approximation.

Plot the graph of a point cloud and regression polynomial using Gnuplot.

Dataset is random.

Example

Dataset

Data set with 20 points and build its polynomial approximation with the degree 8.

20
1.0000 2.0000
2.0000 2.0000
3.0000 3.0000
4.0000 5.0000
5.0000 5.0000
6.0000 6.0000
7.0000 8.0000
8.0000 9.0000
9.0000 10.0000
10.0000 12.0000
11.0000 10.0000
12.0000 12.0000
13.0000 12.0000
14.0000 14.0000
15.0000 17.0000
16.0000 16.0000
17.0000 18.0000
18.0000 17.0000
19.0000 19.0000
20.0000 19.0000
8

Chart