Package provides CNV datasets from The Cancer Genome Atlas Project for all cohorts types from http://gdac.broadinstitute.org/.
Data were downloaded using RTCGA-package and contain snapshots for the date: 2015-11-01. The process is described here: http://rtcga.github.io/RTCGA/.
Use cases, examples and information about datasets in RTCGA.data family can be found here: browseVignettes("RTCGA")
Data format is explained here https://wiki.nci.nih.gov/display/TCGA/Retrieving+Data+Using+the+Data+Matrix
Converting RTCGA.CNV datasets from data.frames to Bioconductor classes is explained here convertTCGA.