# Yahoo! UI Library

### Charts Widget 2.8.0r4

Yahoo! UI Library > charts > YAHOO.widget.PieSeries
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## Class YAHOO.widget.PieSeries - uses YAHOO.widget.Series

PieSeries class for the YUI Charts widget.

### Constructor

YAHOO.widget.PieSeries `( )`

### Properties

#### categoryField - `String`

The field used to access the category value from the items from the data source.

#### dataField - `String`

The field used to access the data value from the items from the data source.

#### labelFunction - `String`

A string reference to the globally-accessible function that may be called to determine each of the label values for this series. Also accepts function references.

#### Properties inherited from YAHOO.widget.Series:

`displayName, type`

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