# Timeline geometries

To visualize time-based properties of all objects in a layer on the timeline, you can configure a timeline geometry to appear on the [timeline](../timeline/index.md).

![Timeline geometry example where a user can see the time properties of the '\[Example\] Airports' object on the timeline.](../../../assets/7067c15a62302ede3f845f29d36cd7a1e7a285803c947e399c642fcbc246dcdc.webp)

Timeline geometries differ from [event objects](../events/index.md#event-objects), as you can configure multiple timeline geometries per object layer and apply additional styling options, such as property-based color shading.

Once you add a timeline geometry, you can access its additional configuration actions from the geometry's entry in the timeline legend.

## Styling

To make a new timeline event geometry layer appear on the timeline, add a **Timeline** geometry from the **Layers** panel.

![The timeline geometry to edit how the Flights object appears on a timeline.](../../../assets/e657b581eec35acd39b38eefa76e21741836de5d201e6cabeadb192166f26217.webp)

A **Timeline** section appears in the style menu once you add the timeline geometry, where you can change the properties used when drawing the selected shape on the timeline. Select the **Start property** and **End property** dropdown menus for shapes that use two time properties, or select **Time property** for shapes that use a single property.

![The Timeline style configuration section for the Flights object. The shape is set to Bar, and there are options to select a start property and end property.](../../../assets/759a1c95cc6bd1a687759ef8b2b0279317888ff62110d2d5062e3ad16b0d68c3.webp)

The timeline geometry will not appear in the timeline unless all its properties have been set.

![The Timeline style configuration section for the Flights object. The shape is set to Diamond, and there is an option to select a time property.](../../../assets/e3f73938f03d53d947a6c59078fd8b15391900111e0bf71d9229fc8e0906ffb4.webp)

The **Shape** you choose in the **Timeline** style configuration section renders for every instance of the object type in the timeline. For example, the image below shows diamond shapes to represent the `Flights` object type on the timeline.

![The Flights object type, represented as diamonds on the map timeline.](../../../assets/f9600dfb75a864e97120f18301bfee36d4be87eadffc09daf99052deb4574429.webp)

Select the **Color** menu in the **Geometry** section to configure how shape colors render on your map's timeline.

![The timeline color configuration window, currently set to a fixed color.](../../../assets/67f64dadecb3f55e0d560ff9736cccd2ec3025d8aec3a31094c6a3f5c4c31c0a.webp)

You can also use properties and measures to configure timeline color styling by changing the selected option in the **Color by** dropdown menu. For example, the image below shows a timeline geometry configured to color by the `Arrival Latitude` property with a rainbow color spectrum.

![The timeline color configuration window set to color by a property using a rainbow color spectrum. The objects that appear on the map and timeline use a rainbow of colors based on a linear interpolation.](../../../assets/8cf5907f2fcbf898ccabccde5bf5a5ab80836b042f30b16363f91995df68a74c.webp)