GeoTools Dynamic Layer

Question

I need to change the features of a MapLayer in real-time but I don't know how I can update/refresh/repaint the layer on the map without having to remove it and add it again (which creates flickering).

map.removeLayer(pathML);
SimpleFeatureCollection pointsFC = createFeatureCollection(points);
pathML = new MapLayer(pointsFC, pathStyle);
map.addLayer(pathML);

Do you know a better way to update the Layer rendering?

Thanks in advance. André.

Answer 1

This actually makes the geotools faq page for gt-swing. The real answer is to use JMapPane as an example (because that is what it is) and build your own widget using a number of layers for a fast response.

You may also find the spatial indexed back feature collections useful in providing a fast experience if you don't mind holding your data in memory.

• http://docs.geotools.org/latest/userguide/unsupported/swing/faq.html