search for: patb

Is there a reason that 'which.min' and 'which.max' don't have an 'arr.ind' argument? The context in which I wanted that was a grid search optimization, which seems like it would be reasonably common to me. -- Patrick Burns pburns at pburns.seanet.com http://www.burns-stat.com (home of 'Some hints for the R beginner' and 'The R Inferno')

...s unequal d, a is unequal c, b is unequal d. By slightly shuffling the same set of vectors, I generate two other similar quadratic forms, say A_{acbd} and A_{adcb}, where the indices are again as unequal as stated above. In the R-code (a part of ) below, I compute these three forms using pata, patb, patc, respectively, using kronecker products. But from the final result of this code I get the feeling there is a difference between what I want the code to do and what it actually does. en <- matrix(1, n, 1) jn <- matrix(1, n, n) dev <- jn - diag(n) pata <- dev%x%dev patb...