Random stratified partitioning: issues with cvpartition

Hello,

I want to perform a randome stratified partition of a X (predictors) and Y (responses) dataset based on Y;

To do so; I use "cvpartition" as follows:

CV = cvpartition(Y,'HoldOut', Ratio,'Stratify', true);

Where Y is a 34x1 response vector and Ratio the proportion of observations to select.

However I get the following error message:

Error using internal.stats.cvpartitionInMemoryImpl (line 22) CVPARTITION can have at most one optional argument

Error in cvpartition (line 156) cv.Impl = internal.stats.cvpartitionInMemoryImpl(varargin{:});

I followed the recommandation here so I don't know what's wrong.

Can anyone help please?

Thanks!

[Quentin D]

Can anyone help please?

[Quentin D]

Still no answer! Would someone be kind enough to help me with this?