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grTimeLevelMax (Function) In french: grNiveauTemporelMax Defines the number of levels to display in the time scale of a chart as well as the maximum level. Remark: This function can be used with grTimeLevelMask, which defines the mask of a level in the time scale of the chart. // The maximum number ol fevels to display is set to 2
grTimeLevelMax(CHART_MyChart, 2)
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// Forbids the display of years for CHART_MyChart
grTimeLevelMax(CHART_MyChart, 3, grtlMonth)
// Set the time scale to display several values per month
// but displaying only the months in the scale
// (days are not displayed)
grTimeLevelMask(CHART_MyChart, grtlMonth, "Mmm")
grTimeLevelMax(CHART_MyChart, 1, grtlMonth)
Syntax
grTimeLevelMax(<Chart name> , <Number of levels> [, <Maximum level>])
<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 or page editor.
<Number of levels>: Integer Maximum number of levels displayed in the chart. <Maximum level>: Optional Integer constant Maximum level to display: | | | grtlDay | Maximum level displayed: days. | | grtlHour | Maximum level displayed: hours. | | grtlMillisecond | Maximum level displayed: milliseconds. | | grtlMinute | Maximum level displayed: minutes. | | grtlMonth | Maximum level displayed: months. | | grtlSecond | Maximum level displayed: seconds. | | grtlYear | Maximum level displayed: years. |
Remarks 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.
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