XChartData Interface Reference

manages the data of the chart. More...

import"XChartData.idl";

Inheritance diagram for XChartData:

Public Member Functions
void	addChartDataChangeEventListener ([in] com::sun::star::chart::XChartDataChangeEventListener aListener)
	allows a component supporting the XChartDataChangeEventListener interface to register as listener. More...
void	removeChartDataChangeEventListener ([in] com::sun::star::chart::XChartDataChangeEventListener aListener)
	removes a previously registered listener. More...
double	getNotANumber ()
boolean	isNotANumber ([in] double nNumber)
	checks whether the value given is equal to the indicator value for a missing value. More...
Public Member Functions inherited from XInterface
any	queryInterface ([in] type aType)
	queries for a new interface to an existing UNO object. More...
void	acquire ()
	increases the reference counter by one. More...
void	release ()
	decreases the reference counter by one. More...

Detailed Description

manages the data of the chart.

See also

XChartDocument

Developers Guide

Charts - Data Access

Member Function Documentation

addChartDataChangeEventListener()

void addChartDataChangeEventListener

(

[in] com::sun::star::chart::XChartDataChangeEventListener

aListener

)

allows a component supporting the XChartDataChangeEventListener interface to register as listener.

The component will be notified with a ChartDataChangeEvent every time the chart's data changes.

Parameters

aListener

the component that is to be added as listener

See also

XChartDataChangeEventListener

ChartDataChangeEvent

getNotANumber()

double getNotANumber

(

)

Returns

the value which is to be used as an indicator for a missing value in the data.

In IEEE arithmetic format it is one of the NaN values, so there are no conflicts with existing numeric values.

isNotANumber()

boolean isNotANumber

(

[in] double

nNumber

)

checks whether the value given is equal to the indicator value for a missing value.

In IEEE arithmetic format it is one of the NaN values, so there are no conflicts with existing numeric values.

Always use this method to check, if a value is not a number. If you compare the value returned by XChartData::getNotANumber() to another double value using the = operator, you may not get the desired result!

Returns

TRUE if the number given is interpreted by the chart as a missing value.

Parameters

nNumber

the number that you want to check for validity.

removeChartDataChangeEventListener()

void removeChartDataChangeEventListener

(

[in] com::sun::star::chart::XChartDataChangeEventListener

aListener

)

removes a previously registered listener.

Parameters

aListener

the component that is to be removed

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The documentation for this interface was generated from the following file:

• com/sun/star/chart/XChartData.idl