Continue program after exponential fit gives inf

I have a few sets of exponentially increasing curves. I need to plot the growth rate of these curves. I am using

f1 = fit(X_axis_data, curve_envelope, 'exp1');

This is run in a double foor loop with outer loop indexing different sets of the curves and inner loop parsing through each curve in a set. Now I know that the rate is increasing so eventually I will get NaN from the exp fit. But the script throws an error

Error using fit>iFit (line 348)
Inf computed by model function, fitting cannot continue.
Try using or tightening upper and lower bounds on coefficients.

But I want to move to the next iteration of the outer loop when exp fit gives NaN. Can someoene help?

Answer 1

[darova]

Use try and catch

for i = 1:10
    try
        f1 = fit(X_axis_data, curve_envelope, 'exp1');
    catch ME
        disp('error')
    end
end

[Ninad Chitnis]

That worked, thanks!