[SciPy-user] RREF - upper triangular

Travis Oliphant oliphant.travis at ieee.org
Sat Feb 18 15:24:15 CST 2006

Ryan Krauss wrote:

>Is there a scipy function to find the upper triangular form of a
Are you trying to find a LU decomposition?  Or perhaps a QR decomposition?

U is upper triangular and so is R in those decompositions.

 From your later description of row-reduction it sounds like you are 
trying to perform an LU decomposition. 


If you are trying to use LU decomposition to solve systems of equations, 
then you should try

scipy.linalg.lu_factor  --- find decomposition
scipy.linalg.lu_solve -- use a decomposition to solve for a particular 
RHS (right-hand-side)


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