inst/testScripts/complete/dataSets/GSE20584/31.doASCRMAv2,PairedPSCBS.R

In aroma.affymetrix: Analysis of Large Affymetrix Microarray Data Sets

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# AS-CRMAv2 and Paired PSCBS
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future::plan("multisession")
library("aroma.affymetrix")
library("aroma.cn");  # PairedPscbsModel
verbose <- Arguments$getVerbose(-8, timestamp=TRUE)


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# Setup
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dataSet <- "GSE20584"
chipType <- "GenomeWideSNP_6,Full"

csR <- AffymetrixCelSet$byName(dataSet, chipType=chipType)


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# AS-CRMAv2
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dsNList <- doASCRMAv2(csR, verbose=verbose)
print(dsNList)

dsN <- exportAromaUnitPscnBinarySet(dsNList)
print(dsN)


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# Group samples by name and type
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# AD HOC: For now, just hardwire the path.
path <- file.path("testScripts/complete/dataSets", dataSet)
db <- TabularTextFile(sprintf("%s,samples.txt", dataSet), path=path)
setColumnNamesTranslator(db, function(names, ...) {
  names <- gsub("id", "fixed", names)
  names <- gsub("fullname", "replacement", names)
  names
})
df <- readDataFrame(db, colClasses=c("*"="character"))
setFullNamesTranslator(dsN, df)

# Identify unique sample names
sampleNames <- unique(getNames(dsN))

dsList <- lapply(sampleNames, FUN=function(sampleName) {
  ds <- dsN[sampleName]
  lapply(c(T="T", N="N"), FUN=function(type) {
    ds[sapply(ds, hasTag, type)]
  })
})
names(dsList) <- sampleNames


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# Extract (single) tumor-normal pairs
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dfTList <- lapply(dsList, FUN=function(dsList) { dsList$T[[1]] })
dsT <- newInstance(dsList[[1]]$T, dfTList)
dfNList <- lapply(dsList, FUN=function(dsList) { dsList$N[[1]] })
dsN <- newInstance(dsList[[1]]$T, dfNList)


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# Segment tumor-normal pairs
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sm <- PairedPscbsModel(dsT=dsT, dsN=dsN, gapMinLength=2e6)
print(sm)

res <- fit(sm, verbose=verbose)
print(res)

sms <- getOutputDataSet(sm)
print(sms)


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# Call segments to be in ROH, AB and LOH.
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caller <- PairedPscbsCaller(sms)
print(caller)
scs <- process(caller, verbose=verbose)
print(scs)


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# Generate report
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setOption("PSCBS::reports/pscnSegmentationTransitions", TRUE)

# Generate report for first tumor-normal pair
df <- scs[[1]]
fit <- loadObject(df)
pathname <- report(fit, studyName=getFullName(dsT), verbose=verbose)
print(pathname)