Visualize Intensities Produced by Illumina's Human Methylation
450k BeadChip
Description
The skewr package is a tool for visualizing the output of
the Illumina Human Methylation 450k BeadChip to aid in quality
control. It creates a panel of nine plots. Six of the plots
represent the density of either the methylated intensity or the
unmethylated intensity given by one of three subsets of the
485,577 total probes. These subsets include Type I-red, Type
I-green, and Type II.The remaining three distributions give the
density of the Beta-values for these same three subsets. Each
of the nine plots optionally displays the distributions of the
"rs" SNP probes and the probes associated with imprinted genes
as series of 'tick' marks located above the x-axis.