Reference object of class datastream. This is a generic class which holds general
information about the data stream.
Currently streams are implemented for data in table format (streams of read.table, read.csv, read.csv2,
read.delim, read.delim2), data in RAM (data.frame, matrix), data in ff (on disk).
See the documentation of datastream_file, datastream_dataframe, datastream_matrix,
and datastream_ffdf
Value
A class of type datastream which contains
description:
character with the name how the stream is labelled.
state:
integer with the current state at which the stream will read new instances of data
processed:
integer with the number of instances already processed
finished:
logical indicating if the stream has finished processing all the instances
args:
list with arguments passed on to the stream when it is created (e.g. arguments of read.table)
Arguments
description
The name how the stream is labelled
args
a list with arguments used to set up the stream and used in the datastream methods
## Basic example, showing the general methods available for a datastream objectx <- datastream(description = "My own datastream", args = list(a = "TEST"))
x
str(x)
try(x$get_points(x))