Hi Everyone,

I am interested in taking the mode over several thousand matrices. I show an 
example below. For the [1,1] entry of my "mode" matrix that I want to create I 
would like to have a "2". For the [1,2] entry I would want a 2.  For the [2,2] 
entry it would be 4 and so forth. Earlier, I was working with continuous cases 
and thus each (n,m) element was simply an average. I was able to then do 
element-wise addition and counting using the "Reduce" function and then the 
average would be totalsum/totalcount where the NA terms were discounted. Here, 
it's not exactly a binary case so Reduce doesn't quite work as well. I'm open 
to suggestions but would as always like to avoid long loops as that will 
significantly bump up running time over several thousand trees. Similarly, I 
would not like to do a lot of sorts to find the mode either...

Thanks for your help!

mymats
[[1]]
     [,1] [,2] [,3]
[1,]    0    2    1
[2,]    2    3    3
[3,]    2    1    2

[[2]]
     [,1] [,2] [,3]
[1,]    1    2    4
[2,]    2    4    4
[3,]    3    4    5

[[3]]
     [,1] [,2] [,3]
[1,]    2    3    1
[2,]    3    4    2
[3,]    5    1    3

[[4]]
     [,1] [,2] [,3]
[1,]    2    4    2
[2,]    1   NA    2
[3,]    2    3    1

[[5]]
     [,1] [,2] [,3]
[1,]   NA    2    1
[2,]    2    4    1
[3,]    1    3    2
______________________________________________
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.

Reply via email to