[BioC] help with mapping statistics summary

[Leonor Carvalho]

Hi,

I am pretty new using the bioconductor and I have some RNAseq data on which I
had performed and TopHat and I need to perform a mapping summary statistics
from the results. I have a pretty large BAM file of accepted hits (aprox.
17GB).

I´ve been looking at the bioconductor packages and I found the Rsamtools, that I
think maybe I can used to this propose, but can anyone give me any suggestion
of some other package or how could I do this statistics summary?

BR,

Leonor