R.filesets: extractMatrix.GenericTabularFile – R documentation

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extractMatrix.GenericTabularFile

Reads one of the columns

Reads one of the columns.

## S3 method for class 'GenericTabularFile'
extractMatrix(this, column=1L, drop=FALSE, ..., verbose=FALSE)

`column`	An `integer` specifying the column to read.
`drop`	If `TRUE`, a `vector` is returned, otherwise a one-column `matrix`.
`...`	Additional arguments passed to `*readColumns()`.
`verbose`	A `logical` or a `Verbose` object.

Returns a Jx1 matrix, or if drop=TRUE a vector of length J.

Henrik Bengtsson