Fossgis: new openlayers features - Marc JansenΒΆ

Tags: fossgis

(One of my summaries of a talk at the 2017 fossgis conference).

See this morning’s summary for a quick intro on what openlayers is. The current talk is about the latest features and about the future.

New: version 4.0.1. 4? It is not a complete rewrite. It is not a massive break of API compatibility, but there have been a few changes, therefore (“semantic versioning”) a new major number was necessary.

  • One important upcoming change: https://npmjs.com/package/ol. ES6/ES2015. In beta status. Support for installing/downloading openlayers via npm. You can select specifically the features you need. After a build, you get a minimized optimalized version. A minimal version can be 32kb!
  • Vectorlayers: you can specify whether your vector layer areas overlap or not. If not, you can get a nice speed increase.
  • Filtering/clipping: feature info requests and wms requests and so can be limited to within a certain area. That also can give you a big speed increase.
  • RotateWithView: for vector layers, whether the labels should rotate with their area or whether they should stay “straight up” with regard to the window.

Future improvements:

  • Even easier reusability, for instance by using the ES6/ES2015 modules.
  • Easier participation in the project.
  • He hopes for even more OpenGL performance.
https://abload.de/img/screenshot2017-03-21a2rsz8.png

Photo explanation: just a nice unrelated picture from the recent beautiful ‘on traxs’ model railway exibition (see video )

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My name is Reinout van Rees and I work a lot with Python (programming language) and Django (website framework). I live in The Netherlands and I'm happily married to Annie van Rees-Kooiman.

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