id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
594	p_psPlaneTransformLinearInvert results in NaN	eugene	gusciora@…	"I had errors in the results from p_psPlaneTransformLinearInvert, with invalid
NaN coming out of the transformation.  The existing code comments out the matrix
inversion form of the solution and uses a difficult-to-read solution.  I suspect
there is an error in this math (D not A in the X1 = ... ?).  the IfA-supplied
code had an error as well in the math, exchanging the x[1][0] and y[0][1] terms
and getting the signs wrong on the [0][0] term arithmetic.  I re-wrote the math
using more explicit names than the a,b,c,d,e,f variables.  

It is also important to note that this inversion is only valid if x->nX == 1 and
y->nY == 1, and if x->nY <= 1, and y->nX <= 1.

I'm supplying these changes in cvs tag eam_rel8_b0"	defect	closed	high		astro	0.8.0	normal	fixed