<Chart>.SurfaceAddData (Function)

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Surface chart
Adding data into a chart

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<Chart>.SurfaceAddData (Function)

In french: <Graphe>.SurfaceAjouteDonnée

Adds a data into a Surface chart.

Example

x, y, z are real
wImage is Image

// Load the photo found in memory in an Image variable
wImage = "sunset.jpg"


// Scan the image and all the points
// to define the rate of lightness for the point
// via ColorLightness
FOR I = 0 _TO_ wImage.Width STEP 4
	FOR j = 0 _TO_ wImage.Height STEP 4
		x = I
		y = j
		z = ColorLightness(dPixelColor(wImage, x, y))
		CHART_Surface.SurfaceAddData(x, y, z)
	END
END

// Draw the chart in the Chart control
CHART_Surface.Draw()

Syntax

<Chart control>.SurfaceAddData(<X> , <Y> , <Z>)

<Chart control>: Control name

Name of Chart control (present in window or report editor).

<X>: Real

X-coordinate of the point to add.

<Y>: Real

Y-coordinate of the point to add.

<Z>: Real

Z coordinate of the point to add.

Remarks

Surface chart

For the data in a Surface chart, the XY plane constitutes the base of the surface while Z indicates the height of the point.

Adding data into a chart

<Chart>.AddData is used to add data into a chart (pie, column, ...).

Depending on the type of chart, specific functions can also be used to add data:

For stock charts, it is recommended to use <Chart>.StockAddData.
For Scatter charts, it is recommended to use <Chart>.ScatterAddDataXY.
For Heatmap charts, it is recommended to use <Chart>.HMAddData.
For Sunburst charts, it is recommended to use <Chart>.SunburstAddData.

Reminder: To add a value to graph data, use the <Chart>.IncreaseData function.

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.

Component: wd300grf.dll