Register to reply 
Creating a formula from plot points 
Share this thread: 
#1
Oct2613, 04:07 PM

P: 1

Hallo all...
I have a couple of plot values that I am trying to derive a formula from. The points are almost linear but not quite... Was hoping someone could shed some light on how to go about this... I have Matlab 7.1, would like to use it if at all possible.... Any help would be appreciated. 


#2
Oct2613, 07:20 PM

Homework
Sci Advisor
HW Helper
Thanks
P: 12,447

Welcome to PF;
Turning a plot into an equation is called regression analysis. You have to start out with a good idea of what the underlying equation should be before you start. If you only have two points, then you can only plot a line  I'm guessing you mean you have a couple of datasets that, when you graph them, make something that looks like it's trying to be a line. The matlab function you want will be: polyfit ... you want to find the line y=mx+c that best fits the data. 


Register to reply 
Related Discussions  
Creating a Bode plot by analyzing a transfer function  Engineering, Comp Sci, & Technology Homework  3  
Creating equation out of 5 point or more from graph plot.  Calculus  5  
How To Plot A Curve With Given Three Points?  General Math  7  
Producing a graph plot of points in 2D/3D  Programming & Computer Science  11  
Creating a Y = kx + m plot in excel  Introductory Physics Homework  0 