# MagicPlot Manual

Plotting and nonlinear fitting software

fit_equations

# Differences

This shows you the differences between two versions of the page.

 fit_equations [Mon Oct 15 19:02:50 2012]Alexander fit_equations [Sun Nov 8 12:21:24 2015] (current) Both sides previous revision Previous revision Sat Jul 20 11:06:04 2013 Alexander Thu Jul 11 23:09:11 2013 Alexander Mon Oct 15 19:02:50 2012 Alexander Mon Oct 15 19:01:24 2012 Alexander Mon Sep 5 13:49:15 2011 Alexander Tue Oct 26 06:50:26 2010 Alexander Mon Oct 25 23:12:15 2010 Alexander Mon Oct 25 23:02:11 2010 Alexander Mon Oct 25 23:02:02 2010 Alexander created Next revision Previous revision Sat Jul 20 11:06:04 2013 Alexander Thu Jul 11 23:09:11 2013 Alexander Mon Oct 15 19:02:50 2012 Alexander Mon Oct 15 19:01:24 2012 Alexander Mon Sep 5 13:49:15 2011 Alexander Tue Oct 26 06:50:26 2010 Alexander Mon Oct 25 23:12:15 2010 Alexander Mon Oct 25 23:02:11 2010 Alexander Mon Oct 25 23:02:02 2010 Alexander created Line 2: Line 2: All predefined Fit Curves are listed in this table. You also can specify [[custom_fit_equation|custom fit equation]]. Unlike custom fit equations these curves can be adjusted with mouse on Fit Plot. All predefined Fit Curves are listed in this table. You also can specify [[custom_fit_equation|custom fit equation]]. Unlike custom fit equations these curves can be adjusted with mouse on Fit Plot. - ^ Name  ^ Formula ^ Parameters ​meaning ​^ Additional Properties ^ + ^ Name  ^ Formula ^ Parameters ​Meaning ​^ Additional Properties ^ - | Line | y = a x + b | //a// -- linear \\ //b// -- constant ​ | | + | Line | y = a x + b | //a// --- linear \\ //b// --- constant ​ | | | Parabola | y = a x^2 + b x + c​| //a// --- quadratic \\ //b// --- linear \\ //c// --- constant ​ | Vertex: \\ <​m>​x_0 = − b / {2 a}​ \\ <​m>​y_0 = c − {b^2} / {4 a}​ | | Parabola | y = a x^2 + b x + c​| //a// --- quadratic \\ //b// --- linear \\ //c// --- constant ​ | Vertex: \\ <​m>​x_0 = − b / {2 a}​ \\ <​m>​y_0 = c − {b^2} / {4 a}​ | | Spline | Natural cubic spline, \\ on each //i//-th piece: \\ <​m>​y_i = a_i + b_i x + c_i x^2 + d_i  x^3​ | //xN// --- anchor point x-coordinates \\ //yN// --- anchor point y-coordinates| | | Spline | Natural cubic spline, \\ on each //i//-th piece: \\ <​m>​y_i = a_i + b_i x + c_i x^2 + d_i  x^3​ | //xN// --- anchor point x-coordinates \\ //yN// --- anchor point y-coordinates| |