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  • Overview
  • Tooltip on the chart values
  • The different options of the popup menu
  • Zoom in a chart
  • Enabling the zoom
  • Handling the zoom
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Stored procedures
Overview
At run time, several chart features are available to the user:
Tooltip on the chart values
By default, in a chart, a tooltip is displayed when a data is hovered by the mouse cursor. This tooltip contains the value and the caption of the series and category. This tooltip can be customized by grTooltip.
Versions 20 and later
The characteristics of this tooltip are as follows:
  • Immediate display for better visibility,
  • Tooltip border that use the color of the series. The association between the tooltip and the series is immediate.
  • Semi-transparent tooltip: the chart below is visible.
  • Arrow precisely pointing to the targeted point.
New in version 20
The characteristics of this tooltip are as follows:
  • Immediate display for better visibility,
  • Tooltip border that use the color of the series. The association between the tooltip and the series is immediate.
  • Semi-transparent tooltip: the chart below is visible.
  • Arrow precisely pointing to the targeted point.
The characteristics of this tooltip are as follows:
  • Immediate display for better visibility,
  • Tooltip border that use the color of the series. The association between the tooltip and the series is immediate.
  • Semi-transparent tooltip: the chart below is visible.
  • Arrow precisely pointing to the targeted point.
The different options of the popup menu
A chart is associated with a popup menu by default (displayed via a right mouse click).
This popup menu allows the end user to perform several operations.
The popup menu of a chart is used to:
  • configure the type of chart: pie, line, column, stock chart, ... This allows you to choose the best view mode according to the displayed data.
  • display the chart in 3 dimensions: the options "Spatial 3D vision" is used to display the chart in 3 dimensions. This display mode also allows you to handle the chart with the mouse in order to turn it round for example. To do so, keep the left mouse button down and move the chart.
  • configure the fonts used for the different chart elements.
  • display (or not) the legend and configure its position.
  • display (or not) the gridlines.
  • configure the position of different axes. For example:
  • configure the style of the chart: raised effects, smooth of lines, gradient colors.
  • enable the zoom (see next paragraph).
  • enable the animations.
  • Versions 20 and later
    enable the crosshair.
    See Chart crosshair for more details.
    New in version 20
    enable the crosshair.
    See Chart crosshair for more details.
    enable the crosshair.
    See Chart crosshair for more details.
  • save the chart in image format. The chart currently displayed (with all its characteristics) is saved.
  • print the chart on the selected printer. The chart will be printed in color on a color printer.
Note: You have the ability to configure this menu:
Zoom in a chart

Enabling the zoom

The popup menu of the chart is used to enable the zoom in the chart. You have the ability to enable:
  • the horizontal zoom only.
  • the vertical zoom only.
  • the vertical and horizontal zoom.
This zoom can also be enabled by default when displaying the chart.

Handling the zoom

When the zoom is enabled, the chart can be handled via one of the following methods:
  • Using the vertical and horizontal scrollbars: you have the ability to specify the area to zoom by moving the different boxes of scrollbars.
  • Pressing CTRL + the mouse wheel: the area pointed by the mouse is automatically zoomed.
    Versions 22 and later
    The zoom wheel also operates when the Chart control is hovered (even if the control does not have focus).
    New in version 22
    The zoom wheel also operates when the Chart control is hovered (even if the control does not have focus).
    The zoom wheel also operates when the Chart control is hovered (even if the control does not have focus).
  • Using the lasso of the mouse: the area selected by the lasso of the mouse is automatically zoomed. To stop the zoom, press the ESC key.
  • Pressing CTRL + and CTRL -: the area found in the center of the chart is automatically zoomed.
To restore the chart to its initial status:
  • Selecting "Zoom .. Initial zoom" from the popup menu of the chart.
  • Pressing CTRL + 0.
Note: If the chart is associated with a background image, the background image is not zoomed.
Minimum required version
  • Version 14
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