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- Marks on axes
- Types of charts
- Restoring the default values
- Managing the zoom
<Chart>.Zoom (Function) In french: <Graphe>.Zoom
 Not available
Defines the zoom of a chart. Note: This function is similar to <Chart>.Origin.. However, the <Chart>.Zoom FUNCTION function allows the user to return to the initial zoom of the graph using one of the following methods:     via a double tap on the chart.
GRF_MonGraphe.Zoom(5, 12, grXCoordinate)
GRF_MonGraphe.Dessine()
Syntax
<Chart control>.Zoom(<Minimum mark> [, <Maximum mark> [, <Axis>]])
<Chart control>: Control name Name of the Chart control to use (in the window editor). <Minimum mark>: Real Start mark on the specified axis.
This parameter can also correspond to a duration, a date, a time or a date-time. <Maximum mark>: Optional real End mark on the specified axis. If this parameter is not specified, <Maximum mark> corresponds to the maximum value of chart data.
This parameter can also correspond to a duration, a date, a time or a date-time. <Axis>: Optional Integer constant Axis for which the marks must be modified:
| | | grSecondaryYCoordinate | Secondary Y-axis (vertical axis). | grXCoordinate
(default value) | X-axis (horizontal axis). | | grYCoordinate | Y-axis (vertical axis). |
Remarks Marks on axes - X-axis (horizontal axis): the parameters <Graduation minimale> and <Graduation maximale> correspond to the minimum and maximum index of data in the series displayed.
- Y-axis (vertical axis): the parameters <Graduation minimale> and <Graduation maximale> correspond to the minimum and maximum value of the data.
- Limits: 100 graduations above and 100 graduations below the x-axis.
- To modify the frequency of marks on the horizontal or vertical axis of a chart, use <Chart>.Interval.
- The data defined by <Chart>.Zoom will be taken into account during the next call to <Chart>.Draw.
Types of charts The marks on axes have no effect on the Pie charts. Restoring the default values To restore the chart display before the zoom, the minimum and maximum values of axes must be used. These values can be known via the following properties:
| | | XAxisMax | The XAxisMax property gets the maximum value of the X-axis in a Chart control. This property can be used in the "Zoom" event of a Chart control to identify the section displayed. | | XAxisMin | The XAxisMin property gets the minimum value of the X-axis in a Chart control. This property can be used in the "Zoom" event of a Chart control to identify the section displayed. | | YAxisMax | The YAxisMax property gets the maximum value of the Y-axis in a Chart control. This property can be used in the "Zoom" event of a Chart control to identify the section displayed. | | YAxisMin | The YAxisMin property gets the minimum value of the Y-axis in a Chart control. | | ZAxisMax | The ZAxisMax property gets the maximum value of the Z-axis in a Chart control (Surface chart). | | ZAxisMin | The ZAxisMin property gets the minimum value of the Z-axis in a Chart control (Surface chart). |
For example:
GRF_MonGraphe.Zoom(5, 12, grXCoordinate)
GRF_MonGraphe.Dessine()
GRF_MonGraphe.Zoom(GRF_MonGraphe.AxeXMin, GRF_MonGraphe.AxeXMax, grXCoordinate)
GRF_MonGraphe.Dessine()
Managing the zoom <Chart>.Parameter is used to configure several options for zoom management in the Chart controls: - Managing scrollbars.
- Managing the zoom out.
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