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I was going to suggest changing the opacity attribute of the marker elements using your browser's developer tools, but the markers are provided as a layer of pr
by jamessb 9y ago
I was going to suggest changing the opacity attribute of the marker elements using your browser's developer tools, but the markers are provided as a layer of pre-generated image tiles (e.g. [1]), so while you can make these images more transparent (which lets you see place names on the underlying map) you can't make the individual markers more transparent.
[1]: http://geoserver.bombsight.org/geoserver/gwc/service/tms/1.0.0/sit:prod_week_bomb@EPSG:900913@png/11/1023/1367.png http://geoserver.bombsight.org/geoserver/gwc/service/tms/1.0...
- tomcooks 9y agodoes this mean that the layers are merged into tiles and cached beforehand? is this better than having a separate layer for markers? edit: asking because this map is blazing fast, esp given the amount of points to map
- jamessb 9y agoAll of the markers are merged into tiles and cached, and it is more efficent for the browser to just load these than it would be to create a separate circle or image for each marker. At zoom level 15 and higher actual individual markers are drawn (each one as a separate png image). There are still two layers, but both just contain image tiles: one contains the base map, and the other contains red circles on a transparent background.