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python2/3: compute polyfit (1D, 2D, N-D) without thirdparty libraries
python2/3: compute polyfit (1D, 2D, N-D) without any thirdparty library like numpy, scipy etc.
also can be used for leastsquares solution computation and for A=QR matrix decomposition.
Tested with python 2.7 and 3.4
Consider donating to this project: https://sourceforge.net/p/purepythonpolyfit/donation
For a Sample use, refer to the WIKI
Statistical models with python using numpy and scipy. Currently covers linear regression (with ordinary, generalized and weighted leastsquares), robust linear regression, and generalized linear model, discrete models, time series analysis and other statistical methods.