useR's,
I would like to know if there is a way to avoid using FOR loops to perform
the below calculation.
Consider the following data:
> x
[,1] [,2] [,3]
[1,] 4 11 1
[2,] 1 9 2
[3,] 7 3 3
[4,] 3 6 4
[5,] 6 8 5
> xk
Var1 Var2 Var3
1 -0.25 1.75 0.5
2 0.75 1.75 0.5
3 1.75 1.75 0.5
4 2.75 1.75 0.5
5 3.75 1.75 0.5
6 4.75 1.75 0.5
7 5.75 1.75 0.5
8 6.75 1.75 0.5
9 7.75 1.75 0.5
10 -0.25 2.75 0.5
Here, X is a matrix of 3 variables in which each is of size 5 and XK are
some values that correspond to each variable. For each variable, I want to
do:
|Xi - xkj| where i = 1 to 3 and j = 1 to 10
It looks as if a double FOR loop would work, but can the apply function
work? Or some other function that is shorter than a FOR loop? Thank you, I
hope this makes sense.
Derek
--
View this message in context:
http://www.nabble.com/Avoiding-FOR-loops-tp14656517p14656517.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
