epivizrData UsageThe epivizrData packages includes methods supporting serving data for visualization applications of data from R/Bioconductor objects. It is primarily used to serve data from interactive R/Bioconductor sessions to the epiviz JS application http://epiviz.github.io. These functions have been extracted from the epivizr into its own package for easier use and maintenance.
It is designed to receive and send requests through WebSocket connections provided by the epivizrServer.
The general pattern to use this package is to create an
EpivizDataMgr object using the createMgr
function. Once the manager is created, data objects, which provide
measurements to a visualization application can be added using
the add_measurements method.
library(epivizrData)
library(GenomicRanges)
server <- epivizrServer::createServer(port=7123L)
data_mgr <- epivizrData::createMgr(server)
## add measurements from a GRanges object
gr <- GRanges("chr10", IRanges(start=1:1000, width=100), score=rnorm(1000))
data_mgr$add_measurements(gr, "example_gr", type="bp", columns="score")## EpivizBpData object example_gr_1
## GNCList object with 1000 ranges and 1 metadata column:
## seqnames ranges strand | score
## <Rle> <IRanges> <Rle> | <numeric>
## [1] chr10 1-100 * | -0.979494
## [2] chr10 2-101 * | 0.114832
## [3] chr10 3-102 * | 1.939510
## [4] chr10 4-103 * | -0.300260
## [5] chr10 5-104 * | -0.498602
## ... ... ... ... . ...
## [996] chr10 996-1095 * | 0.806610
## [997] chr10 997-1096 * | 0.507200
## [998] chr10 998-1097 * | -1.211359
## [999] chr10 999-1098 * | 0.325864
## [1000] chr10 1000-1099 * | 0.102790
## -------
## seqinfo: 1 sequence from an unspecified genome; no seqlengths
##
## columns: score
## limits:
## [,1]
## [1,] -4
## [2,] 4See ?epivizrData::register for supported object types
and options when adding data. For details on usage within the epiviz
visualization app see the epivizr
package vignette.