R: Rle or RleList Objects

Cited from http://kasperdanielhansen.github.io/genbioconductor/html/GenomicRanges_Rle.html

The Rle (run length encoding) class in R is intended for representation genome-wide sequence coverage.

The Wig and BigWig files are used to store coverage data.

The run-length-encoded representation of a vector, represents the vector as a set of distinct runs with their own value. This class is integrated in the IRanges package. A base class called "rle" implements much less functionality.

runLength(), runValue() and as.numeric() function takes in the "Rle" class object.

RleList represents a list of Rles. It stores a genome wide coverage track where each element of the list is a different chromosome.

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Cited from IRanges and GenomicRanges An introduction

aggregate() allows you to apply functions to the Rle inside an IRanges

aggregate(Rle_object, IRange_object, FUN=func_name)