Hello,

I am new with octave.

I have a data set (x,y) and I have a theoretical function that depend on the

x value. In other words, for example, for x < b, f=10*x*a and for x>=b,

f=-10*x*a. I need to perform the fitting of the theoretical function to the

experimental data and obtain the value of R parameter.

Here is my code example

x=[1,2,3,4,5,6,7,8,9,10];

y=[0,2,6,10,12,10,7,5,1,0];

R=2;

N=1;

plot(x,y)

hold

for r=min(x):1:max(x)

if x(N) < 5

y(N)=10*x(N)*R;

elseif x(N) >= 5

y(N)=-10*x(N)*R;

endif

N=N+1;

endfor

I used R=2 as a starting parameter

How can I do?

It is possible to use leasqr?

thanks very much

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