R/SnpChipEffectFile.exportTotalAndFracB.R

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

setMethodS3("exportTotalAndFracB", "SnpChipEffectFile", function(this, fields=c("total", "fracB"), fullname=gsub(",chipEffects", "", getFullName(this)), dataSet=NULL, path=NULL, rootPath="totalAndFracBData", ..., overwrite=FALSE, drop=TRUE, verbose=FALSE) {
  # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  # Validate arguments
  # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  # Arguments 'fullname':
  fullname <- Arguments$getCharacter(fullname, length=c(1,1))

  # Argument 'field':
  fields <- match.arg(fields, several.ok=TRUE)

  # Arguments 'dataSet':
  if (is.null(dataSet)) {
    dataSet <- basename(getParent(getPath(this)))
  }
  dataSet <- Arguments$getCharacter(dataSet, length=c(1,1))

  # Arguments 'path':
  if (is.null(path)) {
    chipType <- getChipType(this, fullname=FALSE)
    path <- filePath(rootPath, dataSet, chipType)
    # Not needed anymore
    chipType <- NULL
  }
  path <- Arguments$getWritablePath(path)

  # Argument 'verbose':
  verbose <- Arguments$getVerbose(verbose)
  if (verbose) {
    pushState(verbose)
    on.exit(popState(verbose))
  }


  verbose && enter(verbose, "Exporting (total, fracB) data")
  verbose && cat(verbose, "Data set: ", dataSet)
  verbose && cat(verbose, "Fullname: ", fullname)
  verbose && cat(verbose, "Path: ", path)

  verbose && cat(verbose, "Fields: ", paste(fields, collapse=", "))

  cdf <- getCdf(this)
  nbrOfUnits <- nbrOfUnits(cdf)
  platform <- getPlatform(this)
  chipType <- getChipType(this)
  chipType <- gsub(",monocell", "", chipType, fixed=TRUE)

  footer <- list(
    srcFile=list(
      srcDataSet=dataSet,
      srcChipType=getChipType(this),
      srcFullName=getFullName(this),
      srcChecksum=getChecksum(this)
    )
  )

  data <- NULL

  asbList <- list()
  for (field in fields) {
    # Identify output class
    if (field == "total") {
      signalClass <- AromaUnitTotalCnBinaryFile
    } else if (is.element(field, c("fracB", "freqB"))) {
      signalClass <- AromaUnitFracBCnBinaryFile
    }
  
    verbose && enter(verbose, "Exporting ", class(this)[1], " as an ", getName(signalClass))
    verbose && cat(verbose, "Signal: ", field)
  
    # Generate output filename
    filename <- sprintf("%s,%s.asb", fullname, field)
    pathname <- Arguments$getWritablePathname(filename, path=path, mustNotExist=FALSE)
    verbose && cat(verbose, "Output pathname: ", pathname)
    if (isFile(pathname)) {
      if (!overwrite) {
        verbose && cat(verbose, "Output file already exists. Return that instead.")
        asb <- signalClass$fromFile(pathname)
        asbList[[field]] <- asb
        verbose && exit(verbose)
        next
      }
    }
  
    verbose && cat(verbose, "File footer:")
    verbose && str(verbose, footer)
  
    # Reading data
    if (is.null(data)) {
      verbose && enter(verbose, "Reading data")
      data <- extractTotalAndFracB(this, verbose=less(verbose, 5))
      # Backward compatibility
      colnames(data) <- gsub("freqB", "fracB", colnames(data), fixed=TRUE)
      verbose && str(verbose, data)
      verbose && exit(verbose)
    }

    verbose && cat(verbose, "Values:")
    values <- data[,field, drop=TRUE]
    verbose && str(verbose, values)

    verbose && enter(verbose, "Allocating output file")
    asb <- signalClass$allocate(filename=pathname, path=NULL, nbrOfRows=nbrOfUnits, platform=platform, chipType=chipType, footer=footer, overwrite=overwrite, verbose=less(verbose, 25))
    verbose && print(verbose, asb)
    verbose && exit(verbose)
  
    verbose && enter(verbose, "Writing data")
    asb[,1] <- values
    verbose && exit(verbose)
    
    verbose && exit(verbose)

    asbList[[field]] <- asb
  } # for (field ...)
  names(asbList) <- fields
  # Not needed anymore
  data <- NULL

  if (drop && length(asbList) == 1) {
    asbList <- asbList[[1]]
  }

  verbose && exit(verbose)

  invisible(asbList)
}, protected=TRUE) # exportTotalAndFracB()


setMethodS3("exportTotalAndFracB", "CnChipEffectFile", function(this, fields=c("total", "fracB"), ...) {
  # Don't export fracB signals, if they are not available
  if (this$combineAlleles) {
    fields <- setdiff(fields, "fracB")
  }

  NextMethod("exportTotalAndFracB", fields=fields)
})