Displaying 4 results from an estimated 4 matches for "dimsx".
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dims
2019 Oct 29
5
head.matrix can return 1000s of columns -- limit to n or add new argument?
...one way forward is to have the default methods check
for dimensions, and use length if it is null:
tail.default <- tail.data.frame <- function(x, n = 6L, ...)
{
if(any(n == 0))
stop("n must be non-zero or unspecified for all dimensions")
if(!is.null(dim(x)))
dimsx <- dim(x)
else
dimsx <- length(x)
## this returns a list of vectors of indices in each
## dimension, regardless of length of the the n
## argument
sel <- lapply(seq_along(dimsx), function(i) {
dxi <- dimsx[i]
## select all indices (full dim)...
2019 Oct 31
2
head.matrix can return 1000s of columns -- limit to n or add new argument?
...d use length if it is null:
>
> > tail.default <- tail.data.frame <- function(x, n = 6L, ...)
> > {
> > if(any(n == 0))
> > stop("n must be non-zero or unspecified for all dimensions")
> > if(!is.null(dim(x)))
> > dimsx <- dim(x)
> > else
> > dimsx <- length(x)
>
> > ## this returns a list of vectors of indices in each
> > ## dimension, regardless of length of the the n
> > ## argument
> > sel <- lapply(seq_along(dimsx), function(i) {
&...
2019 Oct 30
0
head.matrix can return 1000s of columns -- limit to n or add new argument?
...methods check
> for dimensions, and use length if it is null:
> tail.default <- tail.data.frame <- function(x, n = 6L, ...)
> {
> if(any(n == 0))
> stop("n must be non-zero or unspecified for all dimensions")
> if(!is.null(dim(x)))
> dimsx <- dim(x)
> else
> dimsx <- length(x)
> ## this returns a list of vectors of indices in each
> ## dimension, regardless of length of the the n
> ## argument
> sel <- lapply(seq_along(dimsx), function(i) {
> dxi <- dimsx[i]
> ## se...
2019 Sep 17
2
head.matrix can return 1000s of columns -- limit to n or add new argument?
>>>>> Fox, John
>>>>> on Tue, 17 Sep 2019 12:32:13 +0000 writes:
> Dear Herve,
> Sorry, I should have said "matrices" rather than "data frames" -- brief() has methods for both.
> Best,
> John
> -----------------------------
> John Fox, Professor Emeritus
> McMaster University
>