Clears all or a subset of the fields in a CEL file.
## Static method (use this):
## AffymetrixCelFile$clearData(fields=c("intensities", "stdvs", "pixels"), value=0, ...,
##   .forSure=FALSE, verbose=TRUE)## Don't use the below:
# S3 method for AffymetrixCelFile
clearData(this, fields=c("intensities", "stdvs", "pixels"), value=0, ..., .forSure=FALSE,
  verbose=TRUE)
Returns (invisibly) the names of the fields cleared.
Henrik Bengtsson
For more information see AffymetrixCelFile.
  Internally, updateCel is used.