Angular Chart Navigation
The Ignite UI for Angular charts allows for interactive panning and zooming via the mouse, keyboard and touch.
Angular Chart Navigation Example
The following example shows all of the available panning and zooming options that are available. You can interact with the example by using the buttons, or select your desired options using the dropdowns or checkboxes.
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Chart Navigation with User Interactions
Zooming is on by default on the chart. In order to disable navigation in the UI, you need to set either the
isHorizontalZoomEnabled and/or the
isVerticalZoomEnabled properties of the chart to false, depending on the direction that you wish to disable zooming.
It is also possible to zoom or pan simply by clicking the mouse or using touch. The
defaultInteraction property of the data chart determines what happens on mouse click or touch events. This property defaults to
DragZoom and when set to this with zooming enabled, clicking and dragging will place a preview rectangle over the plot area that will become the zoomed area of the chart. This
defaultInteraction property can also be set to either
DragPan to allow panning or
None to prevent these operations.
Chart Navigation with Touch, Mouse and Keyboard
Navigation in the Angular data chart can happen with either touch, the mouse or the keyboard. The following operations can be invoked using touch, mouse or keyboard operations by default:
- Panning: Using 🡐 🡒 🡑 🡓 arrow keys on the keyboard or holding the Shift key, clicking and dragging with the mouse or pressing and moving your finger via touch.
- Zoom In: Using the Page Up key on the keyboard, rolling the mouse wheel up, or pinching to zoom in via touch.
- Zoom Out: Using the Page Down key on the keyboard, rolling the mouse wheel down, or pinching to zoom out via touch.
- Fit to Chart Plot Area: Using the Home key on the keyboard. There is no mouse or touch operation for this.
- Area Zoom: Click and drag the mouse within the plot area with the
defaultInteractionproperty set to its default -
The zoom and pan operations can also be enabled by using modifier keys by setting the
panModifier properties, respectively. These properties can be set to the following modifier keys, and when pressed, the corresponding operation will be executed:
|Modifier Value||Corresponding Key|
Chart Navigation with Scrollbars
These can be configured to the following options
Persistent- The scrollbars always stay visible, as long as the chart is zoomed in, and fade away when fully zoomed out.
Fading- The scrollbars disappear after use and reappear when the mouse is near their location.
FadeToLine- The scrollbars are reduced to a thinner line when zooming is not in use.
None- Default, no scrollbars are shown.
The following example demonstrates enabling scrollbars.
Chart Navigation through Code
[!Note] Code navigation of the chart can only be used for the
The Angular data chart provides several navigation properties that are updated each time a zoom or pan operation happens in the chart. You can also set each of these properties to zoom or pan the data chart programmatically. The following is a list of these properties:
windowPositionHorizontal: A numeric value describing the X portion of the content view rectangle displayed by the data chart.
windowPositionVertical: A numeric value describing the Y portion of the content view rectangle displayed by the data chart.
Rectobject representing a rectangle that represents the portion of the chart that is currently in view. For example, a
windowRectof "0, 0, 1, 1" would be the entirety of the data chart.
windowScaleHorizontal: A numeric value describing the width portion of the content view rectangle displayed by the data chart.
windowScaleVertical: A numeric value describing the height portion of the content view rectangle displayed by the data chart.
You can find more information about related chart features in these topics:
The following is a list of API members mentioned in the above sections: