Exponential Curve fit data a & b

Hi, I'm trying to run a script automatically, and at some point I need to plot an exponential curve into a set of x and y data. I can do that in the 'Curve Fitting' APP and take the values of a and b from there. But I need to do it automatically like a process inside the script. I try this:

exp_curve=fit(x,y,'exp1');

And it returns to me the results in the Command Window as:

General model Exp1:
   f2(x) = a*exp(b*x)
   Coefficients (with 95% confidence bounds):
     a =       584.6  (532.8, 636.4)
     b =    0.004903  (0.004306, 0.005499)

However, it just print this on the Command Window, but I dont know how to take the values of a and b directly from the new variable created, because the variable 'exp_curve' doesnt return to me directly the results, and the type of variable is different is 1x1 cfit.

I will appreciate some help, Thank you, Martha

Answer 1

[Torsten]

a=exp_curve.a;

b=exp_curve.b;

should give you the values of the fitting parameters.

Best wishes

Torsten.

Answer 2

[Andrei Bobrov]

use function coeffvalues

Answer 3

[Martha]

Thank you both for the answers, Martha