gnuplot> f(x) = m*x + b gnuplot> fit f(x) 'out.csv' using 1:2 via m,b Iteration 0 WSSR : 1.58427 delta(WSSR)/WSSR : 0 delta(WSSR) : 0 limit for stopping : 1e-05 lambda : 0.733154 initial set of free parameter values m = 1 b = 1 / Iteration 1 WSSR : 0.0239845 delta(WSSR)/WSSR : -65.0538 delta(WSSR) : -1.56029 limit for stopping : 1e-05 lambda : 0.0733154 resultant parameter values m = 1.05812 b = 1.42664 / Iteration 2 WSSR : 0.0105842 delta(WSSR)/WSSR : -1.26608 delta(WSSR) : -0.0134004 limit for stopping : 1e-05 lambda : 0.00733154 resultant parameter values m = 0.833844 b = 1.51427 / Iteration 3 WSSR : 0.0105676 delta(WSSR)/WSSR : -0.00157136 delta(WSSR) : -1.66054e-05 limit for stopping : 1e-05 lambda : 0.000733154 resultant parameter values m = 0.821303 b ...