graph to equation - curve fitting

[parameswari]

graph to equation

Hi

I have found out the impedance graph of monopole antenna on two plates(plates r 90 deg) by moving it frm center towards edge by a simulation software..I need to write a equation for that graph so that i can use this equation to get impedance graph without simulating for different plate dimension..

I don no how to strat this ?? is their any procedure to do it??r i need to for error n trial method..PLZ help me..

 

[Kohi_boy]

graph to equation

In order words :

You have got a graph which you need to find a best fit equation for it ?

Maybe you can use Matlab for it.

 

[Aya2002]

graph to equation

Yes you can use the curve fitting. There are alot of curve fitting methods.

 

[si14]

graph to equation

you can use curve fitting functions in MATLAB.
Simple guide for curve fitting is attached.