[R] [FORGED] bootstrapping results in table format

Rolf Turner r.turner at auckland.ac.nz
Sat Oct 7 22:32:36 CEST 2017

On 07/10/17 12:16, Peter Wagey wrote:
> Hi R users,
> I was struggling to put the results into table format. Would you mind to
> show using following data and code how we can put the results into table? I
> further would like to have a  confidence interval for each group.
> set.seed(1000)
> data <- as.data.table(list(x1 = runif(200), x2 = runif(200), group =
> runif(200)>0.5))
> data.frame(data)
> head(data)
> stat <- function(x, i) {x[i, c(m1 = mean(x1))]}
> A<-data[, list(list(boot(.SD, stat, R = 10))), by = group]$V1

(1) Don't post in html.

(2) Don't send code that makes use of packages that you don't mention
(in this case "data.table").

(3) Don't use "data" as the name of a data object.  There is a base 
function called "data" whence you run the risk of getting toadally 
incomprehensible error messages as the result of certain syntax errors.
Also see fortune("dog").


Rolf Turner

Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276

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