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  • Surface chart
  • Adding data into a chart
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Stored procedures
Adds a data into a Surface chart.
Versions 21 and later
WINDEVLinux This function is now available for WINDEV applications in Linux.
New in version 21
WINDEVLinux This function is now available for WINDEV applications in Linux.
WINDEVLinux This function is now available for WINDEV applications in Linux.
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 the Chart control (found in the window editor or in the 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:
Reminder: To add a value to a chart data, use <Chart>.IncreaseData.
Related Examples:
WD Chart Training (WINDEV): WD Chart
[ + ] This educational example present different uses of the chart control.
The following charts are presented:
- Semi-circular
- Donut
- Pie
- Sunburst
- Line
- Scatter
- 3D Scatter
- Column
- Area
- Bubble
- Radar
- Funnel
- Surface
- Waterfall
- Composite

The main features presented in this example are the ability to customize the charts by programming as well as the method used to fill a chart from a HFSQL file or in the editor.
Component : wd240grf.dll
Minimum required version
  • Version 23
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