Displaying 1 result from an estimated 1 matches for "inversextx".
2007 Oct 03
1
inverse of matrix made by low.tri function
...message like: no b argument and no default value for sprintf(gettext(fmt,
domain = domain), ...) .
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# my code
X<-Matrix(rep(1,500),100,5)
X[lower.tri(X)]<-1-10^-7
XtX<- t(X)%*% X
XtXu<-lu(XtX)
InverseXtX<-solve(XtXu)
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The cause suggested for this error is that the lower.tri function returns a
matrix of logicals. If so, is trying to fix this by using sprintf function a
good idea ? Or is there is any alt...