Dear All, I would like to know that is there any problem in *expand.grid* function or it is a limitation of this function.
I am trying to create a combination of elements using expand.grid function. A <- expand.grid( c(seq(0.001, 0.1, length.out = 100)), c(seq(0.0001, 0.001, length.out = 100)), c(seq(0.38, 0.42, length.out = 100)), c(seq(0.12, 0.18, length.out = 100))) Four combinations work fine. However, If I increase the combinations up to ten. The following error appears. A <- expand.grid( c(seq(0.001, 1, length.out = 100)), c(seq(0.0001, 0.001, length.out = 100)), c(seq(0.38, 0.42, length.out = 100)), c(seq(0.12, 0.18, length.out = 100)), c(seq(0.01, 0.04, length.out = 100)), c(seq(0.0001, 0.001, length.out = 100)), c(seq(0.0001, 0.001, length.out = 100)), c(seq(0.001, 0.01, length.out = 100)), c(seq(0.01, 0.3, length.out = 100)) ) *Error in rep.int <http://rep.int>(rep.int <http://rep.int>(seq_len(nx), rep.int <http://rep.int>(rep.fac, nx)), orep) : invalid 'times' value* After reducing the length to 10. It produced a different type of error A <- expand.grid( c(seq(0.001, 0.005, length.out = 10)), c(seq(0.0001, 0.0005, length.out = 10)), c(seq(0.38, 0.42, length.out = 5)), c(seq(0.12, 0.18, length.out = 7)), c(seq(0.01, 0.04, length.out = 5)), c(seq(0.0001, 0.001, length.out = 10)), c(seq(0.0001, 0.001, length.out = 10)), c(seq(0.001, 0.01, length.out = 10)), c(seq(0.1, 0.8, length.out = 8)) ) *Error: cannot allocate vector of size 1.0 Gb* What is an alternative to expand.grid if create a long vector based on 10 elements? With kind regards, Shah Alam [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
