--- layout: example.html title: Image Filters shortdesc: Apply a filter to imagery docs: >

Layer rendering can be manipulated in `prerender` and `postrender` event listeners. These listeners get an event with a reference to the Canvas rendering context. In this example, the `postrender` listener applies a filter to the image data.

tags: "filter, image manipulation, maptiler" cloak: - key: get_your_own_D6rA4zTHduk6KOKTXzGB value: Get your own API key at https://www.maptiler.com/cloud/ ---