findgraph is a curve fitting and digitizing
tool for engineers, scientists and businesss. convert plots back to x,y
data from any published report for later processing and manipulations. the
program offers 12 generic fits, including linear and nonlinear regression, logistic functions, fourier approximation, neural networks, b-splines curves, cycles extraction, ssa forecasting, and plus a library of over 300 industry-specific formulas.