Problem with Autocorr/ACF function

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maitreyi mandal
maitreyi mandal 2012-1-19
评论： the cyclist 2017-9-19
Hi All I am a new MATLAB user, I am trying plot ACF functions for 12 lags, so basically I am using the following function: [ACF, lags, bounds] = autocorr(U, [], 12) bounds 0.0928 -0.0928 But i am getting an error message as follows
??? Undefined function or method 'autocorr' for input arguments of type 'double'.
Please provide some insight! Thank you so much!

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回答（1 个）

the cyclist
the cyclist 2012-1-19
autocorr() is a function in the Econometrics Toolbox, which is not part of core MATLAB. Are you sure you have that toolbox? What is the output of the command
which autocorr
  2 个评论
Fiona Li
Fiona Li 2017-9-19
what if I already have econometrics toolbox but still show the same error?
the cyclist
the cyclist 2017-9-19
Does the command
ver
show that the toolbox is installed?
What does the command
which autocorr
show?
(Also, you might want to start a new question. Although it is related to this older one, it was pure luck that I happened to stumble on this comment on an old answer of mine, and probably no one else will notice it.)

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