Extract or Replace Parts of an Object
Operators acting on vectors, arrays and lists to extract or replace subsets.
## S3 method for class 'bigz' x[i=NULL, j=NULL, drop = TRUE] ## S3 method for class 'bigq' x[i=NULL, j=NULL, drop = TRUE] ##_______ In the following, only the bigq method is mentioned: ______ ## S3 method for class 'bigq' c(..., recursive = FALSE) ## S3 method for class 'bigq' rep(x, times=1, length.out=NA, each=1, ...)
x |
R object of class |
... |
further arguments, notably for |
i,j |
indices, see standard R subsetting and subassignment. |
drop |
logical, unused here. |
times, length.out, each |
integer; typically only one is
specified; for more see |
recursive |
unused here |
Unlike standard matrices, x[i] and x[i,] do the same.
a <- as.bigz(123) ## indexing "outside" --> extends the vectors (filling with NA) a[2] <- a[1] a[4] <- -4 ## create a vector of 3 a c(a,a,a) ## repeate a 5 times rep(a,5) ## with matrix m <- matrix.bigz(1:6,3) ## these do the same: m[1,] m[1] m[-c(2,3),] m[-c(2,3)] m[c(TRUE,FALSE,FALSE)] ##_modification on matrix m[2,-1] <- 11
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