On 17/09/2018 12:14 PM, William Revelle wrote:
Dear list
A strange bug in the psych package is due to the behavior of the diag function:
It gives the expected values for 1, a vector (-1,1), but not for -1
Is this a known feature?
It is pretty clearly documented:
"diag has four distinct usages:
...
3. x is a scalar (length-one vector) and the only argument, it returns
a square identity matrix of size given by the scalar."
Duncan Murdoch
diag(1)
[,1]
[1,] 1
diag(c(-1,1))
[,1] [,2]
[1,] -1 0
[2,] 0 1
diag(-1)
Error in diag(-1) : invalid 'nrow' value (< 0)
Bill
William Revelle personality-project.org/revelle.html
Professor personality-project.org
Department of Psychology www.wcas.northwestern.edu/psych/
Northwestern University www.northwestern.edu/
Use R for psychology personality-project.org/r
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