Posts Tagged ‘openstreetmap’

Peninsula Lake, June 2011

The June 2011 version of the Peninsula lake map is ready. You can download a PDF or get the SVG and the map styles from github

This version includes more buildings, docks and rocks traced into OpenStreetMap from Bing imagery along with a few bay names and some cleaner text. My next step is to try and collect depth data in some areas the that the Hydrological service skipped. I’ve already been out in a kayak with a weighted container and rope trying to develop techniques.

I’m planning on attending two conferences this September in Denver. The first conference is the annual OpenStreetMap State Of The Map‘ September 9-11. This year will mark the first time since I’ve been involved with OpenStreetMap that the main State Of The Map conference has been held in North America. I am looking forward to putting faces to names and meeting lots of awsome mappers. I might be giving a talk on new features in PostgreSQL 9.1 at the conference but they haven’t yet accepted talks or announced the schedule.

Following State Of the Map I will be hanging around in Denver for FOSS4G 2011 (September 12-16). FOSS4G is the annual conference for open source geo-spatial software. I will be giving a talk on ‘PostGIS replication‘ where I will give an overview of built in replication and Slony. My blog post comparing Slony and 9.0 replication is by far the most popular post on this blog, and the talk will expand on that material.

They are expecting about 1000 people to attend FOSS4G this year. I am expecting there to be a lot of maps and talk about maps. In addition to my talk there are many other PostGIS/PostgreSQL talks on the schedule. If your going to be attending a conference related to databases this September what better place to be than Denver? The early registration discounts end on June 30’th so remember to register before the price goes up

Tonight, I gave a short talk at OpenData, Waterloo Region on ‘Consuming & Presenting OSM Data‘. A discussion on how to use OSM data followed. The audience had a range of OSM experience. Some people had heard of OSM but never used it, a few people had used the data in applications or while traveling and some experienced mappers were also in attendance. The talk was geared to give an introduction to drive an informal discussion/Q&A versus as a ‘how to’ tutorial.

The meetup was held at ‘Mitsy Mountain Coffee‘. Mitsy Mountain is a spacious coffee shop that has room at the back with a meeting table and large screen that can be used by groups such as ours for meetings. Mitsy wasn’t around when I moved out of Waterloo, but seems like a nice place and is worth visiting again the next time I’m in KW.

My slides from the talk are available here

An OpenStreetMap ‘cake’ is a map, used for a mapping party, where the map is divided into ‘cake slices’. Each slice of the cake is assigned to a mapper who will map it during the mapping party. By dividing an area into cake slices you can avoid mappers duplicating effort.

cake-maker is a script I wrote that uses Mapnik to take an .OSM file containing cake boundaries and produces one map file centered and zoomed to each cake slice.


Yesterday I attended a meeting of SiliconHalton, a technology group in Halton region. The topic of the meeting was OpenData.

Nik Garkusha, an Open Source strategy lead at Microsoft was gave a really good presentation on what open data is, and why it is important. Based on the quality of Nik’s presentation I suspect that he often gives presentations on Open Data. I particularly liked that he started the presentation talking about how OpenStreetMap was used in Haiti after the earthquake and how crowd sourcing projects are mapping the floods in Quebec and Manitoba.

There were about 30 people in the room and most of them were not ‘opensource’ people. I hope some of them left having a better understanding of open data.

I was also talking to someone who works in the I.T. department of one of the local municipalities. He was saying that they were talking about releasing more of their data under open licenses but are worried about losing revenue. He said they currently charge land developers a lot money for some of the data. As open data advocates, I feel we need to convince these municipalities that the things that can be done by the public when the data is opened outweights the relatively small amount of money they collect selling this data.