saving lists as elements of matrix-CodePudding

I am trying to add lists as an element of matrix. I am using the following code

wiip <- matrix(list(), 5, 5)
for (i in colnames(wave1)) {
    for (j in colnames(wave1)) {
        wiip[[i,j]] <- gclo(wave1[[i]], wave1[[j]])
    }
}

the wiip[[i,j]] says subscripts out of bounds. the output from the function gclo is a list and I want to save all the outputs. that is the double loop creates i*j(i runs over 1 to 5 and so does j, hence total 25 lists objects are created) number of lists. how to save each list together in one object.

CodePudding user response：

Try to save the result in a list and use [, i] and [,j] to subset each column of the matrix.

wiip <- vector('list', ncol(wave1)*ncol(wave1))
ind <- 0

for (i in colnames(wave1)) {
  for (j in colnames(wave1)) {
    ind <- ind   1
    wiip[[ind]] <- gclo(wave1[, i], wave1[, j])
  }
}