When I copy/paste
myfun = @(x,xdata) x(1)*exp(x(2)*xdata);% Assume you determined xdata and ydata experimentally
xdata = [0.9 1.5 13.8 19.8 24.1 28.2 35.2 60.3 74.6 81.3];ydata = [455.2 428.6 124.1 67.3 43.2 28.1 13.1 -0.4 -1.3 -1.5];x0 = [100; -1];[x] = lsqcurvefit(myfun,x0,xdata,ydata);
into the command window I get the following error.
??? Attempt to reference field of non-structure array.Error in ==> optimget>optimgetfast at 95 value = defaultopt.(name);Error in ==> optimget at 25 o = optimgetfast(options,name,default);Error in ==> lsqncommon at 24switch optimget(options,'Display',defaultopt,'fast')Error in ==> lsqcurvefit at 182[x,Resnorm,FVAL,EXITFLAG,OUTPUT,LAMBDA,JACOB] = ...
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