Polyglot's diary

Recent diary entries

JOSM is driving me crazy

Posted by Polyglot on 24 September 2010 in English (English)

I found a nice little feature in JOSM: q makes rectangles with 90 degree angles. They look perfect while still in JOSM. Then it gets rendered and I end up with parallellograms. What's up with that? (and more importantly: what can I do to prevent it?)


Location: Blauwput, Kessel-Lo, Leuven, Flemish Brabant, Flanders, 3010, Belgium

Cusco Peru

Posted by Polyglot on 13 July 2009 in English (English)

I'll be mapping in and around Cusco for the next 5 weeks.


Location: San Jerónimo, Cusco, Department of Cusco, Peru


Posted by Polyglot on 12 December 2007 in English (English)

Just bought a new datalogger/GPS mouse. It's a nifty little thing which has 44 channels. It's very precise. I can use the IPAQ to connect to it over bluethooth, but it can also log on its own. 330000 points.

So from now on I'll have two independent gpx tracks to work with. If only I could find a way to set its clock. All the rest, I already achieved. BT access from the IPAQ and from the portable, translating the log output with GPSbabel and uploading it with josm.

botanical garden

Posted by Polyglot on 10 December 2007 in English (English)

Just completed the (probably nonsensical) job of entering the layout of our botanical garden with Potlatch.

Location: Blauwput, Kessel-Lo, Leuven, Flemish Brabant, Flanders, 3010, Belgium

Been busy lately

Posted by Polyglot on 2 December 2007 in English (English)

Today I took care of the E40, E314 and the N25 in the neighbourhood of greater Leuven. I've been rectifying it with help of the Yahoo! imagery, adding an extra lane to the E40 going to Brussels, that is there for a few years already now.

Thanks to Potlatch and the courtesy of Yahoo! I've been able to do a lot of work. For entering the gpx's I use JOSM and I like it. When there is Yahoo! imagery I like to make a second pass with Potlatch to make it all fit.

The last few weeks I found a new way to map: by bus. The advantage is your hands are free and you're out of the cold and the rain. The disadvantage: often it goes too fast. Most of the street signs are too far away or in the wrong angle to be readable. Anyway, I'm exploring relations to put the bus routes on OSM as well.

Usually I take the bus till the end point and then I map a few streets there until a bus goes back. Hopefully I won't get stuck one day/night, when no buses happen to go back anymore...

Anyway, I'm glad I found this project. Now I only need to be careful not to waste too much time with it. It's pretty addictive.

River Dijle/Dyle

Posted by Polyglot on 3 October 2007 in English (English)

I'm amusing myself a bit by tracing the river that flows through my home town. I just did a stretch of 20km from the nearest city upstream and now I'm getting ready to do the same 20km downstream, where it merges with another river.

Is it OK to do this by using the photographic material from Yahoo? I don't see anybody who is going to use a kayak to trace the flow of a river like this, risking an expensive GPS unit.


Inaccuracies in maps of Leuven, Belgium

Posted by Polyglot on 2 October 2007 in English (English)


I've been editing a bit on the maps of my city. I find that there are some inaccuracies between the lines representing the streets and the Yahoo imagery. Am I supposed/allowed to fix this? As it is now, the streets (Tiensestraat/Blijde Inkomststraat) cross over the rooftops of the houses...


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