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Stored procedures
Defines the number of levels to display in the time scale of a chart as well as the maximum level.
Example
// The maximum number ol fevels to display is set to 2
grTimeLevelMax(CHART_MyChart, 2)
 
// Forbids the display of years for CHART_MyChart
grTimeLevelMax(CHART_MyChart, 3, grtlMonth)
Syntax
grTimeLevelMax(<Chart name> , <Number of levels> [, <Maximum level>])
<Chart name>: Character string (with or without quotes)
Name of chart to use. This name corresponds to:
  • the chart name defined by programming with grCreate.
  • the name of Chart control found in the window editor or page editor.
<Number of levels>: Integer
Maximum number of levels displayed in the chart.
<Maximum level>: Optional Integer constant
Maximum level to display:
grtlYearMaximum level displayed: the years.
grtlHourMaximum level displayed: the hours.
grtlDayMaximum level displayed: the days.
grtlMillisecondMaximum level displayed: the milliseconds.
grtlMinuteMaximum level displayed: the minutes.
grtlMonthMaximum level displayed: the months.
grtlSecondMaximum level displayed: the seconds.
Remarks

Details

When displaying a time scale on DateTime data, the chart designer draws several levels corresponding to the different time units displayed.
  • The minimum level to display is defined according to the range of data.
  • The maximum level is defined by using two parameters:
    • The maximum number of levels to display in the chart (by default: 3).
    • The maximum level allowed for the display (by default: year).
grTimeLevelMax is used to modify these parameters. This allows you not to overload the chart or not to display some levels without relevance for the data displayed.
For example:
  • to avoid displaying the years, all you have to do is set the maximum level with the grtlMonth constant.
  • to avoid displaying more than two time levels in the chart, all you have to do is set the <Number of Levels> parameter to 2.
Component : wd260grf.dll
See also
Minimum version required
  • Version 23
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