I have two sets of terrain data downloaded for offline loading in Cesium JS. My app only uses one set, but I’ve been trying different resolutions. One set of terrain data I created using a bunch of open source tools and that works fine, but there are some data issues that cause visual defects, so I decided to try and create a second terrain data set using Cesium ION and a tiff file. In Cesium ION I saw the option to make the asset downloadable and clicked that. I was thrilled as that’s a lot easier than what I had to go through to create the first data set. However, when I try and use this ION generated terrain set offline, the map constantly crashes and causes the page to refresh. For example
terrainProvider: await Cesium.CesiumTerrainProvider.fromUrl('assets/tiles/terrain/NewCastle1m')
If I instead load in this same terrain data set directly from ION it works perfectly/. For example:
There are no errors displayed, the page just refreshes and the map loads. If I try to move the map, the page refreshes again. I suspect there must be an issue with the downloaded tiles.
Here is a link to the TIFF file I used to create the terrain tiles: USGS 1 Meter 10 x56y527 WA_KingCounty_2021_B21 - ScienceBase-Catalog