Misalignment of a polyline from GeoJson

CesiumJS
1

I really like the potential of Cesium. It was pretty easy to build a first test, but now it would be great to get some help regarding the misalignment of my geojson-track.

Please take a look at the short screencast: https://dl.dropboxusercontent.com/u/1102990/cesium_geojson_track_moving.mov

The moving of the track is not aligned to the custom map. It also happens with the map from google or mapbox, so I think it belongs to the track or the accuracy of the terrain-data.

The track has informations regarding the elevation: https://gist.github.com/jensfranke/729b8bd4479a9952e0c4d14142d22698

What can I do for removing the misalignment of the track if move the camera?

2

Sorry, I’m unable to access the dropbox link you posted. Could you upload the video to youtube or google drive instead so I can see what you’re talking about?

Thanks,

Hannah

3

Hi Hannah,

hope this upload works:

Thanks in advance
Jens

4

Yes, thank you! To me it looks like the heights in your data are slightly off.
To fix it, try using the sampleTerrain function to query the terrain at a higher level of detail and adjust the position heights.

Take a look at the ‘Sample Everest Terrain’ section of this demo for an example of using the sampleTerrain function: http://cesiumjs.org/Cesium/Apps/Sandcastle/index.html?src=Terrain.html&label=Showcases

Best,

Hannah