Export to Text File

The Export to Text File task exports datasets or other data structures to a text file.

The Export to Text File task is divided into two tabs:

• the Options Tab,

• the Export Options Tab.

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The Options tab

A detailed description of the Options tab is provided in the Export tasks introductory page.

In this task only, the Character encoding for output files option is available: it allows users to choose between the following values:

• UTF-8 (default value)

• UTF-16LE

• UTF-16BE

• ASCII

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The Export Options tab

The Export Options tab is divided into two panes: the Dataset Structure pane and the Rules pane.

Dataset Structure

Within this pane, users can set and configure the following options:

• Data separator: the data separator delimiting the values of the data to be exported in the output file. Possible values are:

  • COMMA

  • TABBING

  • SEMICOLON

  • SPACE

  • OTHER: after having selected this option, specify any other wished data separator.

• File extension: the required extension type for the exported file. Possible values are:

  • tab

  • csv (default)

  • txt

  • data

  • tsv

• String for missing values: the character or string used to indicate missing values.

• Text delimiter: select from the drop-down list the symbol used to identify strings, which will included in the exported file (e.g. selecting the symbol “, the string age will be exported as “age”).

• Put names in line (0 means ‘no names’): the line number from which the names of the columns will be taken.

• Put types in line (o means ‘no types): the line number from which the names of the data types will be taken.

Rules

Within this pane, users can set and configure the following options:

• Write covering statistics: if selected, covering statistics for rules will be added to the exported text file.

• Write error statistics: if selected, error statistics for rules will be added to the exported text file.

• Write condition covering statistics: if selected, covering statistics for conditions will be added to the exported text file.

• Write condition error statistics: if selected, error statistics for conditions will be added to the exported text file.

• Rule format: the way users want rule data to be expressed. Possible values are:

  • If-then (default)

  • C-like: matrix.

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Example

• Drag an Export to Text File task onto the stage and link it to the task containing the data to export.

• Double-click the task to open it and configure it as follows:

  • Select Dataset as the Data to be exported.

  • Select Store file as the Export mode.

  • Select the Destination type: in this case, we decided to use a Custom destination, a Local File System.

  • Choose the path of the folder where the file will be stored by clicking on the SELECT button.

  • Write the File basename in the corresponding field.

  • In the Export Options tab, select txt as the File extension.

• Save and compute the task.