ydata in lsqcurvefit not being updated

I am having some bizarre goings-on with lsqcurvefit. The calling program loads the vector being used as "ydata". It calls lsqcurvefit with the function result coming from an anonymous function. However, the ydata that ends up being used is from a previous run of the program! I have no idea how that is happening. Any ideas on what is going on?

Answer 1

[Star Strider]

Without knowing more (posting some of your code would help) it's difficult to say exactly what the problem is. I suggest that just before you load the new values for ‘xdata’ and ‘ydata’, you set your data arrays to the empty array:

xdata = [];
ydata = [];

Otherwise, be sure you're actually not loading your previous run data. If they're in a matrix, you could have a matrix indexing error, so the vector you believe you are loading is not the one you are actually loading.