DataSource example with: GeoJSON or CZML for 4D entity trails

CesiumJS
1

1. A concise explanation of the problem you’re experiencing.

Does anyone have a sample of GeoJSON or CZML with data points based on Time?

What we have is a log of pedistrian and helicoptor positions each with the following attributes:

  • Date/Time

  • Location 3D

  • Velocity 3D

  • Orientation (an euler triple, but we can convert to quaternion if needed)

  • Acceleration

  • a few string attributes

There are about 20 entites, and about 100K samples for each entity

I looked at the sandcastle demos:

https://cesiumjs.org/Cesium/Apps/Sandcastle/gallery/GeoJSON%20and%20TopoJSON.html (but there is an error loading the data GET https://cesiumjs.org/Cesium/Apps/SampleData/ne_10m_us_states.topojson 404 (Not Found)

and at

https://cesiumjs.org/releases/1.1/Apps/Sandcastle/index.html?src=CZML.html&label=DataSources

but I cannot find the czml data source.

What we are looking to do is place billboards in 3D at each data point, and then scrub the timeline. We would like the infobox to populate with the all the attributes, and scrub over time

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

Just looking for a starter example, don’t need too much help from there.

4. The Cesium version you’re using, your operating system and browser.

Cesium 1.39, Chrome 61

2

Hi there,

The sample data is located here: https://github.com/AnalyticalGraphicsInc/cesium/tree/master/Apps/SampleData

And you’re correct, the file https://cesiumjs.org/Cesium/Apps/SampleData/ne_10m_us_states.topojson is returning a 404, I’ve opened an issue to make sure that file is restored and the demo will work again.

Thanks,

Gabby