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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 least squares 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
A MATLAB package to simulate sample paths of the solution of a Itô or Stratonovich stochastic differential equation (SDE), compute statistics and estimate the parameters from data.
A note of caution: SDE Toolbox is no more developed but it's still downloadable. Its inferential capabilities can be considered surpassed (at best). Actually the parameter estimation methods were already far from the state-of-art when the project began in 2007 (!).