Use of regress function in Matlab version 7.11.0 R2010b

Hi,

I had been using the regress function without any problems in the 2007 version of Matlab running on Windows Vista.

Recently our university upgraded to both Windows 7 and Matlab 2010 at the same time, and now I can't get the regress function to work (I have made no changes to the m-file).

The error message displayed when I try and run the function is:

??? Undefined function or method 'regress' for input arguments of type 'double'.

I have tried changing the input arguments to single, but the same error message is shown with 'single' instead of 'double'

Any ideas on why I am getting this error measage?

Thanks

Answer 1

[Walter Roberson]

Which MATLAB release are you using? Stats Toolbox 7.4 is for R2010b, with Stats Toolbox 7.3 being for R2010a.

Also, the fact that something shows up in "ver" does not always mean that it is licensed for you to use.

You should also check with

which -all regress

and ensure that it shows up on your path.

Also, you might need to use

rehash toolbox

Answer 2

[Oleg Komarov]

type ver to check that the statistics toolbox is installed

[Sam harris]

Yes I have checked this, says version 7.4

thanks.

[Oleg Komarov]

try to type doc regress, if nothing comes up then try rehash toolbox, if still doesn't work you probably need to re-check the permissions/reinstall the toolbox.

Answer 3

[Fangjun Jiang]

I think function regress() is in the Statistics Toolbox. By any change your new version of the MATLAB software suite no longer has that toolbox anymore? Type ver to check.

[Sam harris]

Thanks, Have checked that, it still does have that tool box.