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Re: st: matrix operations when N exceeds matsize


From   <mjbaker@hunter.cuny.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: matrix operations when N exceeds matsize
Date   Tue, 18 May 2010 14:12:37 -0400 (EDT)

One problem is that if W is NxK and M is K x K, W' and M do not 
commute. However, the following code gets the matrix into and 
out of mata and sort of does what you want: 

******************
sysuse auto, clear
mkmat price mpg, mat(W)
matrix M=(1,2 / 3,5)
mata
W=st_matrix("W")
M=st_matrix("M")
WMW=W*M*W'
st_matrix("newmat",WMW)
end
mat list newmat
*****************

Matt Baker
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