acf

how can i put the acf command on my command window, where can i find that command

Answer 1

[Walter Roberson]

MATLAB does not have any acf command. The econometrics toolbox has an autocorr function for calculating ACF.

There is a MATLAB File Exchange contribution that has a routine named acf; see http://www.mathworks.com/matlabcentral/fileexchange/30540-autocorrelation-function-acf

Answer 2

[Wayne King]

In addition to Walter's suggestion, you can use xcorr() in the Signal Processing Toolbox to obtain the autocorrelation sequence estimate.