Help / WLanguage / WLanguage functions / Controls, pages and windows / Chart management functions
  • Marks on axes
  • Types of charts
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WindowsLinuxPHPWEBDEV - Browser code
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Stored procedures
From version 28 (75), grGraduate is kept for backward compatibility. This function has been replaced with grInterval.
Indicates the interval between values on the vertical and horizontal axis of a chart.
Reminder: By default, the interval is set to 0. This interval is adjusted to fit the available space in the selected destination.
Linux Caution: A specific configuration is required to use this function in Linux. For more details, see The charts.
// Chart created through programming
// Vertical axis of the chart with an interval set to 5
grInterval("MyChart", 5, grYCoordinate)
// Chart control
// Horizontal axis of chart with an interval set to 10
grInterval(CHART_MyChart, 10, grXCoordinate)
grInterval(<Chart name> , <Interval> [, <Type of axis>])
<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.
Android Only Chart controls are available.
PHP Only the interactive Chart controls are available.
<Interval>: Real
Interval between two marks. If this parameter is set to 0, the interval will be adjusted to fit the available space in the selected destination.
<Type of axis>: Optional constant
Type of the axis for which the interval is defined:
grSecondaryYCoordinateMarks on the secondary X-axis.
(Default value)
Marks on the X-axis.
grYCoordinateMarks on the Y-axis.
grZCoordinateMarks on the Z-axis (Surface chart only).
Universal Windows 10 AppAndroidPHP This constant is not available.

Marks on axes

  • Limitations: 100 marks above and 100 marks below the X-axis.
  • The last mark displayed is the first multiple of <Interval> greater than the highest data value. The entire data is displayed regardless of the destination dimension.
  • To modify the start and end marks on the horizontal, vertical or secondary axis of a chart, use grOrigin.
  • The data defined by grInterval will be taken into account during the next call to grDraw.

Types of charts

The marks on axes have no effect on the Pie charts.
Related Examples:
The Chart functions Unit examples (WINDEV): The Chart functions
[ + ] Using the main chart designer features of WINDEV:
- Create a Pie, Column or Line chart
- Define the display area of a chart
- Define the chart options (legend, percentage, ...)
- Draw a line on a chart
The Chart control 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
Business / UI classification: Neutral code
Component: wd280grf.dll
Minimum version required
  • Version 9
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Last update: 06/22/2023

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