Dear all,

I observed this problem regarding the maximal length of a Rle vector:

 > rle = Rle(rep(0, 1000000000))
 > length(rle)
[1] 1000000000
 > length(c(rle, rle, rle))
[1] -1294967296


Probably, it is caused by the maximum positive number (~2.1E9) that can 
be represented by an integer variable. However, there is no warning 
message.
I noticed this problem when I wanted to calculate the average coverage 
of a sequencing project accross the human genome. I used the coverage() 
method and then concatenated all chromosomes. This should give me an Rle 
vector of length ~3*109, but mean() does not work on that vector.

Best,
Hans-Ulrich


 > sessionInfo()
R version 2.14.0 (2011-10-31)
Platform: x86_64-pc-linux-gnu (64-bit)

locale:
  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
  [7] LC_PAPER=C                 LC_NAME=C
  [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] IRanges_1.12.3



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