Curve fitting in Matlab

Hi all

I am trying to do a curve fit following an example found on the net.

http://www.mathworks.co.uk/support/tech-notes/1500/1508.html

below is the code..Can someone explain the code below please.

especially A= params(1) and lamda=params(2) what are they doing (what is params?)

function sse=myfit(params,Input,Actual_Output)

A=params(1);

lamda=params(2);

Fitted_Curve=A.*exp(-lamda*Input);

Error_Vector=Fitted_Curve - Actual_Output;

it might be a stupid question but I just dont know

Answer 1

[Doug Hull]

params seems to be an input to the function. The code is pulling out specific values of that input and naming them something more intuitive.