I have some X-Y data, and I would like to calculate a definate integral of the data. In this case x_data and y_data are vectors.
I tried this method.
But when I try to calculate an integral like this, I get an error.
Error, (in int) operator y cannot be evaluated at one variable.
What is this error trying to tell me? I have tested by function y for values x1 and x2. My data is smooth and includes x1 and x2. I have no reason to believe that the function cannot be evaluated for any value of x.
Is there another (better) way to do what I want? This is a part of a large worksheet that reads data from an excel file, and I don't know how to reduce the worksheet for only this problem.