equation of a graph

2009-09-14 Thread ankita dutta
hii.. i am working with graphs, my problem is to find the equation for any given graph. i tried with *polyfit function*. but that only give me the slope and y-axis intercept. hence *best-fit line * , but i want to find *best-fit curve * how can i find that ? ankita -- http

Re: equation of a graph

2009-09-14 Thread Tim Chase
but i want to find *best-fit curve * What type of curve? Polynomial (of which your rejected linear is a low-order variant)? Exponential or logarithmic? Bell curve? S-curve? Circle? Axis-aligned ellipse? non-axis-aligned ellipse? There are lots of curvy possibilities here... -tkc