File

Reads the data from the input file.

Channels

Inputs

(None)

Outputs

Examples (ExampleTable)
Attribute-valued data set read from the input file.
Classified Examples (ExampleTableWithClass)
Attribute-valued data set with class information read from the input file. Used only if input file includes a special class attribute (disrete or continuous).
Attribute Definition (orange.Domain)
A list of attributes used in the data. This signal is usually fed into Extended File widget.

Description

This is the widget you will probably use most often. It reads the input data file (data table with examples) and sends the token with the data set to the output channel. It maintains a list of most recently used data files. To open a new data file, "..." button opens a standard file dialog. To reread the file, just choose it again from the pulldown menu.

In the info box, this widget displays information on number of examples, attributes and meta attributes, and information on class variable (if defined in a file).

File widget

Examples

Any of your schemas should probably start with the File widget. In the schema below, the widget is used to read the data that is then sent to both Data Table widget and to widget that displays AttributeStatistics.htm.

Schema with File widget