Errors while solving an inverted matrix in Matlabby jen0leb Tags: excel, inverse matrix, matlab, regression analysis 

#1
Mar1612, 04:03 AM

P: 6

Hey,
i've been trying to find a better fit for a correlation, the numbers i'm dealing with are really small and when i try to solve for the coefficients using the inverse function on the matrices in Matlab i get this error: Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 5.541639e25. I tried solving the inverted matrix in excel and the results didn't make much sense either! is there an other way to solve this problem? I really can't solve it by hand it'll take me ages. i'm open to any suggestion... J. 



#2
Mar2112, 11:27 AM

Sci Advisor
P: 3,175

If the problem is going to be "How do I numerically invert a nearly singular matrix?" then this link might help.http://www.mathworks.com/matlabcentr..._thread/157000 It suggests using a pseudoinverse instead of an inverse. 


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