grGetData (Function)

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grGetData (Function)

In french: grRécupèreDonnée

Retrieves a data from a chart.

Caution: In Linux, this function requires a specific configuration. For more details, see The charts.

New in version 2025

This feature is now available for Android applications from version 2025 Update 1.

Example

// Affichage d'une donnée dans le champ "GRF_MonGraphe". 
// Cette donnée est la première de la première série.
Info(grGetData(GRF_MonGraphe, 1, 1))

Syntax

<Result> = grGetData(<Chart name> , <Series number> , <Index>)

<Result>: Real

Retrieved value.

<Chart name>: Control name or character string

Name of the chart to be used. This name corresponds to:
the chart name defined through programming with grCreate,
the name of the Chart control (in the window, page or report editor).
Only interactive Chart controls are available.

<Series number>: Integer

Number of the series for which a value will be retrieved.
If the specified series does not exist, the retrieved value is 0.

<Index>: Integer

Index of data in the series for which the value will be retrieved.
If the data corresponding to the specified index does not exist in the series, the retrieved value is 0.

Remarks

To retrieve data from a Stock chart, it is recommended to use grStockGetData.
To retrieve data from a Scatter chart, it is recommended to use grScatterGetDataXY.
To retrieve data from a Surface chart, it is recommended to use grSurfaceGetData.
To retrieve data from a Heatmap chart, it is recommended to use grHMGetData.
By default, a chart created by grCreate contains no data.

Component: wd300grf.dll