232    ◾    Bioinformatics

used to compare between chromosomes. The following codes display peak coverage in the

region between 1.0e8 and 1.5e8 bp for chromosome 1 and 2 (Figure 6.9):

covplot(peaks1Ranges, weightCol=”peaks1$peak”,

chrs=c(“chr1”, “chr2”), xlim=c(1.0e8, 1.5e8))

FIGURE 6.8  ChIP-Seq peak coverage plot.

FIGURE 6.9  ChIP-Seq peak coverage plot comparing between a region in Chromosomes 1 and 2.