grAddData (Function)

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Adding data
Adding data into the different types of charts

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grAddData (Function)

In french: grAjouteDonnée

Adds a data into a chart.

Attention: For "advanced" graph types, there's a specific WLanguage function for adding data (see paragraph "Remarks")..

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

Example

// Ajout d'une donnée dans le champ "GRF_MonGraphe". 
// Cette donnée de valeur 10, est ajoutée à la fin de la première série.
grAddData(GRF_MonGraphe, 1, 10)

// Courbe de 9 valeurs: si l'option "Dessin des valeurs manquantes" correspond à "Non dessinées", 
// seul le point 3 n'est pas dessiné, les points 8 et 9 sont dessinés (à zéro)
grAddData(GRF_MonGraphe, 1, 1, 50)
grAddData(GRF_MonGraphe, 1, 2, 30)
grAddData(GRF_MonGraphe, 1, 3, 30) // pas dessiné
grAddData(GRF_MonGraphe, 1, 4, 30)
grAddData(GRF_MonGraphe, 1, 5, 60)
grAddData(GRF_MonGraphe, 1, 6, 60)
grAddData(GRF_MonGraphe, 1, 7, 0) // dessiné dans tous les cas,
grAddData(GRF_MonGraphe, 1, 8, Null) // dessiné dans tous les cas,
grAddData(GRF_MonGraphe, 1, 9, 60) 

grDraw(GRF_MonGraphe)

Syntax

grAddData(<Chart name> , <Series number> [, <Index>] , <Value>)

<Chart name>: Control name or character string

Name of the chart to be used. This name corresponds to:
the name of the chart defined programmatically with grCreate. This name must be in quotation marks.
the name of the Chart control (in the window, page or report editor). This name must not be in quotation marks.
Only Chart controls are available.
Only interactive Chart controls are available.

<Series number>: Integer

Number of the series into which a value will be added.
For example, if the Chart control displays 2 lines, this is used to identify the line for which the data must be added.
If the specified number does not exist, the series between the last existing series and the specified number are automatically created and initialized to 0.

<Index>: Optional integer

Index of the data in the series into which a value must be added.
For example, for a Line chart, this parameter corresponds to the X-axis of the value to add.
If this parameter:
is not specified, the value is added at the end of the series.
is specified, the former value is replaced.
The index of the data in the series must be a strictly positive integer.

<Value>: Integer or real

Value to add.
For example, for a Line chart, this parameter corresponds to the Y-axis of the value to add.

Remarks

Adding data

The data added by grAddData will be taken into account during the next call to grDraw.
For a pie chart (grPie constant), only the data found in the first series is used. A Pie chart cannot be drawn if the data found in the first series is null.
For the "Stacked bar" charts, if the value of the first series is negative, the corresponding bar is oriented toward the bottom.

Adding data into the different types of charts

For Scatter charts, it is recommended to use grScatterAddDataXY.
For stock charts, it is recommended to use grStockAddData.
For Heatmap charts, it is recommended to use grHMAddData.
For Sunburst charts, it is recommended to use grSunburstAddData.
For Surface charts, it is recommended to use grSurfaceAddData.
For Radial Bar charts, it is recommended to use grRBAddData.
To add a value to the data in a chart, use grIncreaseData.

Related Examples:

Training (WINDEV): WD Chart

[ + ] This example presents the different uses of the Chart control.
Different types of charts are presented:
- Pie
- Sunburst
- Line
- Scatter
- Column
- Area
- etc.

The main features presented here are the possibility to customize of charts from the code, as well as to fill the chart from an HFSQL data file, or in the editor.

Unit examples (WEBDEV): The Chart functions

[ + ] This example presents the main features of the chart designer of WEBDEV and it allows you to:
- Create a chart: Pie, Column or Line
- Define the display area of a chart
- Define the options of the chart (legend, percentage, ...)

Unit examples (WINDEV Mobile): The Chart control

[ + ] Using the Chart control to display different types of charts:
- Pie (or pie chart)
- Line
- Column chart
- Area

Unit examples (WINDEV Mobile): The Chart functions

[ + ] Using the Chart functions:
- create a Pie, Column or Line chart by programming
- define the chart options (legend, percentage, ...)

Business / UI classification: Neutral code

Component: wd300grf.dll