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From: Yiyi Wang on 21 May 2010 13:22
My data looks like this:
Y=[4;4;5;13.....]; (n by 1)
X= 1.3 6.9
2.0 3.2
4.2 6.9048
..... (n by 2)

when i used: [B,dev,stats]=mnrfit(x,y,'interactions','off');
The error message appeared : ??? Undefined function or method 'mnrfit' for input arguments of type 'double'.

What caused that problem? Also, shall I convert the y into a format of 1,2,3,4,...k, rather than the code number originally assigned for each choice (starting from 4, to 500+. with irregular numbering)

Thanks!
From: Steven Lord on 21 May 2010 13:38

"Yiyi Wang" <yiyiwang(a)mail.utexas.edu> wrote in message
news:ht6ffu$ds8$1(a)fred.mathworks.com...
> My data looks like this:
> Y=[4;4;5;13.....]; (n by 1)
> X= 1.3 6.9
> 2.0 3.2
> 4.2 6.9048
> ..... (n by 2)
> when i used: [B,dev,stats]=mnrfit(x,y,'interactions','off');
> The error message appeared : ??? Undefined function or method 'mnrfit' for
> input arguments of type 'double'.

MNRFIT is a function from Statistics Toolbox. Check the output of the VER
function to see if this toolbox is listed; if not, you will not be able to
use this function unless you install that toolbox (or create an MNRFIT
function on your own.)

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
To contact Technical Support use the Contact Us link on
http://www.mathworks.com


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