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Read a set of column vector from an input source (e.g. ColumnReader)

Source: R/all_generic.R, R/common.R
read_columns-methods.Rd

Read a set of column vector from an input source (e.g. ColumnReader)

Usage

read_columns(x, column_indices)

# S4 method for ColumnReader,integer
read_columns(x, column_indices)

Arguments

x

the input channel

column_indices

the column indices

Value

a matrix consisting of the requested column vectors