scaled.condition | R Documentation |
Compute the scaled condition number of a rectangular matrix.
scaled.condition(x, scales = FALSE)
x |
a numeric rectangular matrix. |
scales |
a logical value indicating whether the scaling factors that allow balancing
the columns of |
The columns of a rectangular matrix x
are equilibrated (but not centered),
then the scaled condition number is computed following the guidelines of Belsley (1990).
If requested, the column scalings are returned as the attribute 'scales'
.
Belsley, D.A. (1990). Conditioning Diagnostics: Collinearity and Weak Data in Regression. Wiley, New York.
x <- matrix(c(1, 1, 1,
1, 2, 1,
1, 3, 1,
1, 1,-1,
1, 2,-1,
1, 3,-1), ncol = 3, byrow = TRUE)
scaled.condition(x)
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