[R] Manipulating Arrays

Manipulating Arrays Using the below data: df - structure(list(dim1 = structure(c(1L, 3L, 1L, 4L, 1L, 2L, 2L, 2L, 3L, 1L, 4L, 3L, 4L, 4L, 3L, 2L), .Label = c(a1, a2, a3, a4), class = factor), dim2 = structure(c(2L, 1L, 2L, 2L, 4L, 3L, 1L, 3L, 1L, 3L, 2L, 4L, 3L, 4L, 1L, 4L), .Label = c(b1,

Re: [R] Manipulating Arrays

Hi, the abind package can help you with the first query, ## add values library(abind) arr - abind(arr,arr[1,,,] * 2 + 1,along=1) dim(arr) as for the second, maybe you can use negative indexing, ## remove values arr - arr[-2,,,] HTH, baptiste 2009/10/11 ampc ampc2...@gmail.com:

Re: [R] Manipulating Arrays

Thanks baptiste. Works as expected. ampy ampc wrote: Manipulating Arrays Using the below data: df - structure(list(dim1 = structure(c(1L, 3L, 1L, 4L, 1L, 2L, 2L, 2L, 3L, 1L, 4L, 3L, 4L, 4L, 3L, 2L), .Label = c(a1, a2, a3, a4), class = factor), dim2 = structure(c(2L, 1L, 2L, 2L,