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  • Overview
  • Characteristics of a Surface chart
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Overview
The Surface chart is used to represent correlated analogical data, according to 3 axes. Some examples:
  • represent the resistance of a material according to pressure and temperature.
  • for an engine, represent the opening time of the injectors according to the volume of incoming air and engine throttle.
  • for a photo, represent the variations of lightness.
You also have the ability to represent a mathematical function in 3 dimensions.
Versions 21 and later
WINDEVLinux This type of chart is now available for the WINDEV applications in Linux.
New in version 21
WINDEVLinux This type of chart is now available for the WINDEV applications in Linux.
WINDEVLinux This type of chart is now available for the WINDEV applications in Linux.
Characteristics of a Surface chart
In this chart:
1. Chart title.
The chart title characteristics are entered in the "Details" tab of the control description ("Edit chart title" button).
You have the ability to define the chart title as well as its position and style.
2. Gridlines.
The gridlines can be displayed on one or more planes of the chart via the "General" tab of the control description.
To display the gridlines by programming, use grSurfaceGridlines.
3. Chart.
The chart can:
  • Display a mesh or not ("Display a meshing on the surface" in the "General" tab of the control description or grSurfaceMesh).
  • Be oriented: All you have to do is define the rotation angle according to the different axes in the "General" tab of the description window of the control. A chart can also be oriented by programming with grOrientation.
  • Be oriented by the user: All you have to do is check "Rotation with the mouse (charts with less than 10 000 points)" in the "General" tab of the control description window.
  • Include colors: All you have to do is call grSurfaceAltitudeColor to define the colors to use.
4. Marks.
The marks according to the axes can be defined in the "General" tab of the description window of the control.
The caption of the marks can be defined by grSurfaceMarkCaption.
The description window of the control allows you to define the marker used. You have the ability to use an orthonormal set of markers or not.
Minimum version required
  • Version 18
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