I used xcorr function in Matlab to compute the autocorrelation of my signal. I obtained a graph, which is shown below. How to interpret this? I read that autocorrelation helps in finding the patterns in the data. And i have went through some of the properties of the auto-correlation.
But i am finding difficulty in obtaining information regarding how my input data is correlated with itself. Do i need to compute any other things in order to get this information? How to understand the autocorrelation graph?