EDIT 12-03-2025: I accidentially broke the maps when deleting my AWS account, as the mbtiles were hosted there. Oops. In Sydney Commute Times Mapped Part 1 I took a small step to a bigger goal of mashing together public transport in Sydney, and the Metropolitan Strategy for Sydney to 2031. The question I wanted to answer is this: how aligned is Sydney’s public transport infrastructure and the Metropolitan Strategy’s of a “city of cities”?

I showed a few of my co-workers my graph and one replied – oh! that’s really cool. (I think only two of my co-workers are actually interested in my geekyness). He then emailed me tonight a .kmz file containing a colorized file of his speed. I looked at the kml and noticed it appeared to be dynamically allocated judging by the top speed. Well, as you could guess, I surely had to modify my code to include colors.

Status: ✅ You can likely tell that I’ve been having some fun with graphing and mapping recently. I was reading a few articles about GIS and stumbled upon a pretty darn cool project at Webopticon, which included cool pictures. I showed it to a friend thinking they would find it interesting, and then realized: oh! KML has an altitude attribute. That could be interesting. One of my projects is to create maps of Sydney’s traffic, so I have been experimenting heavily with Mapnik and OSM. I figured I could have some fun and finally parse some gps tracks and display the data.

I’ve been playing around with OSM a little lately, and have been meaning to construct my own slippy map. At first I wanted to do it on my VPS – but with rather limited storage, and even more limited memory, there just isn’t a way. Three problems exists: the first occurs when trying to use osm2pgsql to import the OSM file into the database. Current records state that this typically uses 650+ MB, something my 512MB VPS just doesn’t have (although I’m writing some code that might make this possible in the future).