# Is it possible to use own geometry for polyline?

**URL:** <https://community.cesium.com/t/is-it-possible-to-use-own-geometry-for-polyline/13764>\
**Category:** CesiumJS\
**Created:** [May 23, 2021, 3:40pm UTC](https://community.cesium.com/t/is-it-possible-to-use-own-geometry-for-polyline/13764 "2021-05-23T15:40:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Lawrence](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/lawrence/32/5081_2.png) [@Lawrence](https://community.cesium.com/u/Lawrence)\
**Post date:** [May 23, 2021, 3:40pm UTC](https://community.cesium.com/t/is-it-possible-to-use-own-geometry-for-polyline/13764/1 "2021-05-23T15:40:42Z")

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I have my own array of geometries in the following format: “uexF\_}vxRn@`FC`@IVML\_@Tg@TW\_DIsB”. Is it possible for me to plot it using Cesium Polyline Volume? How can I do it?

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**Author:** ![Alexander\_Johannesen](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/alexander_johannesen/32/2008_2.png) [@Alexander\_Johannesen](https://community.cesium.com/u/Alexander_Johannesen)\
**Post date:** [May 23, 2021, 9:58pm UTC](https://community.cesium.com/t/is-it-possible-to-use-own-geometry-for-polyline/13764/2 "2021-05-23T21:58:25Z")

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Hiya,

Cesium internal model is Cartesian3, so it needs to be converted to that first. If it’s your own format, only you know what that stream means. Is it in a world coordinate system, or local (or closed)? Either way you need to convert it to something Cesium understands (either Cartesian3, or Cartographic degrees or radian)

Cheers,

Alex