Class "ViewerDataText"

Description

An object representing the text file to view.

Objects from the Class

Objects can be created using the viewerDataText function.

Slots

filename:

Object of class "character" giving the name of the text file.

width:

Object of class "numeric" giving the maximum number of characters on the longest line in the file.

nlines:

Object of class "numeric" giving the number of lines in the file.

readArgs:

Object of class "list" giving any additional arguments used to read the file (currently not used).

index:

Object of class "numeric" giving a byte index to the start of each line in the file.

Extends

The virtual class "ViewerData", directly.

Methods

colNames

signature(data = "ViewerDataText", cols = "ANY"): provide the names of the specified columns.

colWidths

signature(data = "ViewerDataText"): provide the number of characters in each of the specified columns.

dimensions

signature(data = "ViewerDataText"): provide the number of rows and columns in the data.

getText

signature(data = "ViewerDataText", rows = "ANY", cols = "ANY"): provide a text version of a subset of the data as specified by the rows and columns.

Author(s)

Paul Murrell

See Also

Viewer

Examples

showClass("ViewerDataText")