Export cesium entities to Shapefile

[amitb...@gmail.com]

I had added some entities on my project, now how can I export then into shapefile or geojson?

[Omar Shehata]

I don't believe Cesium has a built in way to do this. I searched around a bit and couldn't find any community projects to do it, but it might not be too hard to try writing one yourself, that iterates over a given collection of entities and creates the shapefile/geojson text and outputs it/downloads it. If you manage to get that working it'd be really cool to share it with the community! 

[amitb...@gmail.com]

Thanks for the reply.
Is there any possibility of addition of this kind of feature in future updates of cesiumjs.

[Omar Shehata]

Typically users tend to convert the other way - trying to put GeoJSON or shape files into Cesium. Can you explain a bit more what kind of work you're doing that would require this feature? The Cesium team tends to prioritize features that have wider use cases, so a lot of it is community-driven.

[amitb...@gmail.com]

I'm creating building and road layouts by using different shapes,lines and polygons, so i want to save the work i have done as geojson.(similar to arcscene) So i can load the work i have done directly.Is it possible.Or will there be any .cesium file in future similar to .shp file.

[Omar Shehata]

There is a CZML format:

https://github.com/AnalyticalGraphicsInc/czml-writer/wiki/CZML-Guide

Although I'm not aware of any tool that can export a CesiumJS scene into it. That does sound like it could be a pretty cool use case. I think if you are creating these lines, shapes and polygons in your CesiumJS app, you can just loop over all the entities and their properties, and save them as a CZML. You can see a bunch of examples of how CZML looks like on Sandcastle:

https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=CZML%20Colors.html&label=CZML

[Omar Shehata]

I opened a feature request for this because I think it's a really good idea:

https://github.com/AnalyticalGraphicsInc/cesium/issues/7372

[clara...@gmail.com]

Hi there,
I also needed that feature for my project, so I got down to make it work.

If anyone is interested, here is a sandcastle of how I did it:

https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/index.html#c=1Vttc9u4Ef4rGPWDpYlCyVJcp5HsaS523btx4pvYVXu1PBmIgiTaFKHyxY6c0X/v4o0ESJCiIvVDNZlYBhYPFrsPdpcE/IxD9OyRFxKiMxSQF/SJRF6ydEa8rXnk8l8/0SDGXkDCo9ZgHIyDTge5IcExQTPvmSAchngdoZiiKKYhQQS7CxSvVwTRGSJB7MVrFJEVDmGEvx4HzzDpinpBDHPePwxEw8Tz/QnF4VRvXFF/7cPEeluUhDPsGk3P1E+WaYtoWxPfpy+/y2nEGh2ujEciB0+nzR/jAMnPikbQTgP0QRngEw5j+IaDvjML6fKCzENCoubb913npNtG/RPn+F2rrSOwiT4gDZR9XOrTUENlvzp/XF5f3/yzbUquvO/Ev/VeCUgf/znr24ivG2Z5PomzSqJFU1teK12z8NYvmiUPtu7TE+fkL6enp230rut0++/f9/XVZ877kDOAt8RztqQjx+nw71FHzPTtms7pN/pMQh+vnVUwP8oZZEG8+SL+gPo9uzHSOYVBcmvPjBKS6bWgUIUxArzkWn4lU8QJBzaJCfDaC5ReKRcNJysLRttM+JFtkuY9GJKxJ7fWXT5vj3sc4kF3wIs3jReggg68hO0WetjP0+/r5YUm5fp4ubqjVyFNAnAfisOESCuPA8k6sXBhZ2lOw76/g8QcLFbbxCs5AP7J7axbec4JqRl54ZEQh+5iXdfIx8cnDtulp/D/PpaWML09YbqnHKa/L0yPwxwfBgaWZlCojC43Xz9+ubo0KSGdljJCEiAjBfNGsBMtrtgIRL4D/6YZQw5Mi+57tvR3e/uzexiYdxymm3OEssHfZQA86bKPMVeZr66+Xl5+YT7QnSWyo/CV7hfpLeGaV0qXd7SZc5QQmVIXACDz/Cch4fqW+MSFPN8cN/40pS+BT/F03Ggxn14+g9S1F8Uk4MWD77lPR200SwKXxchmi3kPioffIrbxYZVunIREMOYR2q58OgG2/NjAtPrv4warJsYNWO648TcoPGAULJjpAbDjRhuaZ6I54lL3DxtZGqhmVRwww4j/Z5CYm0zEg77uAH4MRRZ3fBLM4wW0vHnDNc7szsSZKqqssGom9FmFdEVCZkTe+2PDGueELkkcrmXTZpBBp7COEirg826B7lIaTr0AaBBpWBmaN2tKYkzJDML1tMmXdu89OCpjOd+esZ+QVitfs4CDoOCDxBwjbRrE9hNy1f5i1d5U7C59NK9CUhmjpMy2Zqkuzvc2Ku1bV/S9tgY2Leg8xKuF54IimhKqlUeIVKtmqnYRy6fB3IthT2ZAn3G8cGKq6iN9NicVtyDheBcgKV3EeQUAQ1RUS0UrMAf+649/M/p/SZYT2JaZdm2kmtQ8actr62FgsqLAkY9TYMYcveAgZvE6o7smmJE663dETSy3eR1ZBzIMyGveZ1KiSxIAJOqC8RC4BY7L1AWcwIgteEykLhz2Vwu8BY/LVDjICi8oUkROnzwkuhFIUBpBRQJJkXVObtTXTSHAasE1K9i3B1j9GebAQTaF/h8F2nSZNYKtES5BsdKIWQXKomZl/3pL/5boKfTaIYDCgIoYasBVRD+QqxNJd4Irj6cCJj9gS1QVgwqBla2/EFuNRjZd6yG30Uxy2jau4cVsO4n+bPfWgBSP5aWIvNseDuxbyNErhTPdQIPqWGI8sNviifqajybpU2k+mOiOeuTy+QDDtbvWXivlo8/hg055rGF63MYhpFJ7wBGlbPqcv/B8gpqPmgHEjlaP6Op1hNrbwjq5sKN/P1i1B08VFQVfDV3vHx9EAVhTdr2D7JYQJ3TfIcTBgIoQZ8BVxCSQqxPidoIrDXFyTwqwQsxiCyrELNZo1oHp1pEv3VJMc77HN29s27nAPHhmRDhYW6tHvm22lY1WobRetJBDPTlXlY920KxurA2bLyPtwGn9WBs3V07aYbM6sjauKivLocV7xhJQ3mnLGkYEtKUKxihtQcU0kdGrssRU76WqcsJTeU64heG2nMAPOMo6mXqy78BJg6FWFan8LU5J1rh/sOWNp8xGynMA4aQv0ixZozTeyzXbA36NSe6feLivKbmuLbkl1Eu1d4j1bERFsDcBK8Izd2eNcL8j4LaAr3ibj/h8WYWQz1stMZ/Ppcf8olWetgd9EfLZa4OZF0YxYmUH+Y5o4BK0ZEeHUGcsMDtSRK5PIwjj0um5zaq7BpeSULz4rORLl3OwnuC6rqDBQBv/8O4ExHlMw4+4Nl+wnYF5/u0EaGFgjn+4jIDYzkBsULCcgLhVyDNCrkbZYBWUpYMl1NQtHOywqnioDWwrHezQsnyojWwpHuzAqoCojVwsH9LEqXkuHzgKmS5XIKQYlQWCiVpZJMjzkKoawS+vEUaifraWCCV9TD/RdeACAUAPWx/4qXnqlgf2h0ojSI8qHgxrBFS/boj264Zof2uRMNr1eXBU+Tw4qvkAN6r3PLgT3LbyYGR/HhzZngdH9udBNo8emQvG8LdXBnnGJP9fWV1qvBtjktKcbsJVuzjZntF3hKvO5xLMxpjESpmkmMwtjEmKqZxL1cjkNjmZyIuurZvHraAqjdeFtWVxK7BM4nVxLTncCqtSeF1c+wuAHLR5P8GKborYXgmofKnRIBc28gnOVhZAf2VVYEAaRUGmi7po4GhXBdRXrrIS5NcJYH4WL3+7vfniRPy1rTdbNxVGNplLg4j6kCrpvMkHpV3wDHQhr02geEEk5AzyL5tqk96whEchb7miYYy8GE2w+8RaxBYeB+pKBWIwFyF+AUWavhc8tfmFmpbMzPwOJcQfL4q0I+crQtkNjAsc41uahOx9CaDI4WlONy6GGffCsp2qsB1YSNBsTlPEFjo7z6DkrZKsW9wA0sQ1bsDSr0jMTcN9nF4i1d4OsnWpNlhXBpRdMeKUiwbG8UHutkcqW1UKyvurZ6k08HxQdf4nBmSHKfkzP9kvzl7Tox3Vmj/1KaRtcAc/uSkOqDwQ59dk2Uv+rSOLZ9/8eq5Pku1jC+fcvDSWQWjL2OKZtkg6Ccycu53MLzs1uSXafFVtrl9bTGXWHqjU9iqf7ASslTGI+LCrfpoA+fO7uiQoDGd6ei72b0Jv7gXZNh8Z7c4vN3d3N5+rodSxYFER3mNfPyoxgEwGtjNvbuHez7O4tw+Ne/vwuLcnkXulhOsJxvUE5XqSc71W7vzVNG6axwE2nWJQIU+TWF6on2FwX5VoIc8X122KVIFBNokibwZ8ZGnrThyyKiMU+pxPl7e//uPzt/7Ft7tfry932nfqOKKUd/2f511/H9719+Fdf0/e9Ut51xe86wve9SXv+hW8M06Q+BGOmGJQJa9OjoqL4D2VYw9InlwxuFHJIiRQ8AVpQcNbN412YxjFa5+cC6G/yoIsCf2m43Rislz5rBztTBL3iUBGifiN2WFHDRpOvWfkTc/Gjdwf0owbiC8KemaJz29fjRvnww7IG8NYYQal3Y34Mwkmsjg+vxaNjuMMO/BrcVRMqT/BMAlrjTH49XwYT+h0LdcxjMPzzCbDeHo+nCRxDOWkUkqo+1a0grIcNrvte64q2GFHiIASgCLROyk8fOXTwk+uBbONUPa/

basically, the function just loop through the arrays of entites and writes a json file that you can then import back into Cesium

[Omar Shehata]

This looks pretty awesome Clara, thank you for sharing that! We also just recently implemented a KML export option that could be useful here as well:

https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/index.html?src=Export%20KML.html