crossvalind function doesn't work

Hi,

I have the Bioinformatics toolbox but not the Statistics toolbox and would like to use the crossvalind function with the "groups" argument (part of the bioinformatics toolbox). However, when I try to do so I get the error

Undefined function 'grp2idx' for input arguments of type 'double'.

as 'grp2idx' is part of the Statistics toolbox. Does that mean crossvalind depends on another toolbox?? Or are there any workarounds?

Thank you.

Answer 1

[Tom Lane]

I'm not sure how you got one toolbox without the other. The Bioinformatics Toolbox is supposed to depend on the Statistics Toolbox, according to this:

http://www.mathworks.com/products/bioinfo/requirements.html

The third output from

unique(s,'first');

is approximately what grp2idx uses for its first output. So if you plan to write your own replacement for grp2idx ,that would be the place to start.