--- layout: example.html title: Applying a filter along lines rendered with WebGL shortdesc: Example showing how filtering a line using the M parameter is represented with the WebGL renderer docs: > This example showcases how the `['line-metric']` operator can be used to style and partially filter lines which contain an M ("measure") parameter in their coordinates. For each trajectory the timestamp is stored in the M parameter using an `XYM` layout. This let us show the progression on a specific time for each trajectory on the map. experimental: true tags: "draw, vector, webgl, line, line-metric, measure, layout" ---