r-watermelon
Illumina 450 methylation array normalization and metrics
The standard index of DNA methylation (beta) is computed from methylated and unmethylated signal intensities. Betas calculated from raw signal intensities perform well, but using 11 methylomic datasets we demonstrate that quantile normalization methods produce marked improvement. The commonly used procedure of normalizing betas is inferior to the separate normalization of M and U, and it is also advantageous to normalize Type I and Type II assays separately. This package provides 15 flavours of betas and three performance metrics, with methods for objects produced by the methylumi and minfi packages.
- Versions: 2.16.0
- Website: https://bioconductor.org/packages/wateRmelon/
- Licenses: GPL 3
- Package source: gnu/packages/bioconductor.scm
- Builds: See build status
- Issues: See known issues
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guix install r-watermelon@2.16.0
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