On Mon, Aug 8, 2016 at 12:36 PM, Oleksiy Muzalyev <oleksiy.muzal...@bluewin.ch> wrote: > Using colors like this is an excellent idea, however we shall not rely on > colors alone as several percent of people cannot distinguish colors due to > color blindness [1]. Besides, color blindness may develop with an advanced > age, so no one is color-safe. > > We do not hear often about color blindness as people tend not to speak about > it. But in fact maybe up to ten percent cannot see differences between > certain colors at all.
I am more interested in the processing step itself and not styling, which is trivial. To be clear, I am not talking about inclusion of this in osm-carto. It is overloaded anyway. I asked myself: If they use buildings to generate it, what do they do when they aren't available? Turns out that for places without building outlines they use street geometry to generate highlights [1][2]. Actually, when you compare it to using building outlines [2][3] it looks somewhat cleaner. But in the end, buildings help too, as streets may not always cover areas of interest. I speculate it is made similar in geometrical appearance to built-up areas (orthogonal / straight edges) on purpose. A smooth blob would be confusing. I posted a thread here because I thought it may inspire people who make their own OSM-based map styles ;) The devil is always in the details and we would learn much from a proof of concept, both in terms of how to achieve a similar effect and how to integrate external open datasets in a meaningful manner. [1] https://www.google.com/maps/@54.333386,18.2042257,15.92z?hl=en [2] https://www.google.com/maps/@54.3514061,18.6551512,15.88z?hl=en [3] https://www.google.com/maps/@54.5175292,18.5419689,15z?hl=en [4] https://www.google.com/maps/@54.4440137,18.5640867,16.67z?hl=en Michał _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk