http://www.mathworks.com/matlabcentral/newsreader/view_thread/265000 MATLAB Central Newsreader - glmfit Feed for thread: glmfit en-us &copy;1994-2012 by MathWorks, Inc. webmaster@mathworks.com MATLAB Central Newsreader http://blogs.law.harvard.edu/tech/rss 60 MathWorks http://www.mathworks.com/images/membrane_icon.gif Wed, 04 Nov 2009 17:44:02 -0500 glmfit http://www.mathworks.com/matlabcentral/newsreader/view_thread/265000#692134 Luca Di Simone I am computing the mcfadden r^2 and I have to calculate the log likelihood of a model with only intercept. Now I used the vector of zeros as only regressor but the output of the function is that the matrix is singular to working precision.<br> While if I perform the regression on an specific regressor the results have not this problem.<br> How can I do?<br> thanks<br> Luca