Maps of Standards

Listening to a report about the Trans Siberian Railroad on the radio this morning, my mind drifted to rail gauges, and maps of standards in general.  Here are two that have been of personal interest to me for very different reasons. The first one because I am a rail enthusiast, the second because I used to … Continue reading Maps of Standards

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OpenStreetMap Data Temperature – How It Was Done (And Do It Yourself!)

In my talk at State Of The Map 2011, I introduced a few new concepts relating to the local quality of OpenStreetMap data and its contributor community: The Community Scorecard which is a concise way to summarize the activity of a local OpenStreetMap community Data Temperature attempts to capture the 'warmth' of a local community … Continue reading OpenStreetMap Data Temperature – How It Was Done (And Do It Yourself!)

Tutorial: Creating buffered country POLYs for OpenStreetMap data processing

OpenStreetMap represents a lot of data. If you want to import the entire planet into a PostGIS database using osmosis, you need at least 300GB of hard disk space and, depending on how much you spent on fast processors and (more importantly) memory, a lot of patience. Chances are that you are interested in only … Continue reading Tutorial: Creating buffered country POLYs for OpenStreetMap data processing

Taking the Temperature of local OpenStreetMap Communities

In my recent talk at the State Of The Map 2011 conference, I introduced the idea of Data Temperature for local OpenStreetMap data. In this blog post, I want to follow up on that, because my talk was only twenty minutes, covered a broader theme and thus did not allow me to elaborate on it … Continue reading Taking the Temperature of local OpenStreetMap Communities

Insert Coin To Play – my talk at State Of The Map 2011

UPDATE: I have re-uploaded the slides to Slideshare with the correct Community Score Cards -- see the comments. Phew! State Of The Map is over and it was so very good. In spite of the growth of OpenStreetMap and the conference, the grassroots spirit is still very much there, and that is what OpenStreetMap is … Continue reading Insert Coin To Play – my talk at State Of The Map 2011

OpenStreetMap and Warm vs. Cold Geography

Denver, The Mile High City in Colorado, USA, will be the stage for two of the most prominent conferences in the domain of open geospatial software and data, FOSS4G and SOTM. I will be speaking at both conferences. The community is gearing up for these important and fun events, preparing their talks and discussing the … Continue reading OpenStreetMap and Warm vs. Cold Geography