here is my original data frame
a b c A B C
[1,] 1 2 3 4 5 6
[2,] 7 8 9 10 11 12
[3,] 13 14 15 16 17 18
a, b, c are type I variables
A, B, C are type II variables
how can I create a new data frame in which:
1) in each row, there are one random number from type I
Gong, thanks!! but your syntax did work out as I would expect. here following
are the reasons:
each row from my original data frame represents data from one subject. when
the one type I number and the
two type II numbers are drawn from the original data frame, both type I
number and type II
Hi,
I would try to sample by row index and column index. Hope it helps.
df - data.frame(matrix(1:18,nrow=3,ncol=6,byrow=TRUE))
colnames(df) - c(letters[1:3],LETTERS[1:3])
## Generate a new data frame with 10 rows
one - two - three - numeric(10)
for (i in 1:10) {
## Sample from type I
col.1 -
hello R-Wizards! again i'm invoking your presence!!
since all the fuss about the paradoxes on a computer algorithm generating
caos or un-determinancy, i recently grew quite curious about the mechanism
underlying the procedure of NUMBER RADOMIZATION.
could anyone of you, masters, attach me
You can access the sources yourself.
How to find the right file is described in
Ligges, U. (2006): R Help Desk: Accessing the Sources. R News 6 (4),
43-45. http://cran.r-project.org/doc/Rnews/Rnews_2006-4.pdf
Best wishes,
Uwe Ligges
On 15.01.2010 10:54, Federico Bonofiglio wrote:
hello
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