On Thu, 18 Jan 2018 06:14:17 +0100 Oleksiy Muzalyev <oleksiy.muzal...@bluewin.ch> wrote:
> Good morning, > > I started to experiment with the OSM data [1] on a local computer, > and I begin to realize how big these data files are. It takes quite a > while to load into the local database just the data for one country. > > What can I as a map editor do to keep these data files to a > reasonable size without compromising data quality? I mean in the > sense, - take care of the pennies and the pounds will take care of > themselves? > > I could think of the following three approaches so far: > > - using as short an URL as possible, website=http://somewebsite.com > instead of website=http://www.somewebsite.com , three characters > less; [2] > > - correct phone number ISO format, phone=+12 345 678 90 12 instead of > phone=+12 (345) 678 90 12 , two characters less; [3] > > - deleting unnecessary nodes from a way (Shift-Y in JOSM) with > consequent verification of its geometry; > > What else, if anything, could be done? Honestly, the best thing you can do is not worry about it. The world is a big, complicated place. The three bytes you save from shortening a URL? You'd need to repeat it 400 times to fit one extra gas station on the map. As an experiment, I tried applying various data-saving options to a park I've mapped. I managed to reduce the size from 1240354 bytes to 1218966 bytes for a savings of 1.7% -- savings that will vanish almost instantly this spring once I resume mapping seasonal wetlands. -- Mark _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
