id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
749	psMinimizeLMM.c handling of fitting failures	eugene	David.Robbins@…	"the code using the LUD inversion was resulting in NaN parameters, indicating
failed solutions.  this is not a very good solution to the fitting.  It is
better to detect the singular matrix and return an error.  I have reverted to
the GaussJordan matrix inversion which returns a status condition if the matrix
in not invertable.  This is now caught (in SetABP) and is used by psMinimizeLMM
to modify the guess (increase lambda) or to eventually result in a
non-convergence.  Since this is a valid operating condition (just a pooly
constrained set of data), I have changed the psError messages which were related
to these states to psTrace messages.  

changes in CVS HEAD"	defect	closed	high		math	0.11.0	normal	fixed