Recent diary entries
I think there must be a very large number of GPS trace points at the intersection of the equator at the prime meridian (what's that place called anyway?).
I'm afraid I've been fool enough to add quite a few of these myself! Oops. Sorry.
I've modified one of the gpsbable scripts that I use to prepare NMEA files, chopping out anything around (0,0), so all should be fine from now on.
Don't really even need Mister Bing to fix up some of what's gone from around here:
A bit over a year ago I started uploading weekly dumps of the GPS traces from my company's fleet. I've uploaded a bit over half a gigabyte of data since then, or 20,000 to 50,000 points per week, and party render thinks it looks like this:
python render.py -d .. -g none -r 1000 --pos=-32.901318,117.776609
I trace over bits and pieces now and then, but I'm not doing much. I was just wondering whether anyone else is mapping in rural Western Australia and finding these traces useful?
I have recently been given permission from the company that I work for to upload the GPS traces from our fleet of vehicles. These are twenty or so trucks and 4WDs that travel the length and breadth of the south-west of Western Australia, often along small roads and farm tracks, etc. They each have a GPS tracker taking readings at 30s intervals and sending these (when possible; there's a delay when out of range) back to a central server via the GSM network.
I get hold of these traces as week-by-week NMEA files (containing all vehicles' data), and convert them to GPX with this gpsbabel command. Then I upload them. They're about 15000-20000 points each.
I'm going to try to get the sampling frequency increased, because there's lots of areas for which these points are too far apart. Although, I guess as the density of points increases (i.e. from multiple trips along the same roads) the topography will become clearer.
Now, the tracing begins! :-) If anyone wants to help....
I quite enjoy tracing suburban footpaths.
One of the things that turned me off OSM back in the beginning (a few years ago; I can't quite remember when) was its seeming focus on making maps for CARS. I don't like cars! I cycle, or walk, and don't have a driver's license; I want to contribute to maps for walkers and cyclists, not for those silly GPS things that everyone's suctioning to their windscreens these days. (Rhubarb rhubarb.)
Thankfully, I have since realised that OSM is about MAPS, not cars, and that I can contribute whatever parts of the map that I feel are useful. So, I find myself focusing on paths for pedestrians, and because I live in the 'burbs, most of those paths are a) foopaths next to residential streets, and b) paths of desire (oh, such a delightful term!) in those rare bits of non-suburb'd land.
The question is: should one trace these paths individually? I say yes, because the information cannot be captured with tags on a road. But some people say no. Hmm....
I think I'll just keep on as I am. :-)
Long live OSM!
I'm setting up a tracking and navigation system for the trucks at work. They've each got a tablet PC (running Windows unfortunately, because of needing MS Access), with a built-in GPS and 3G modem.
So far, the track logging is working, as is the uploading of that data to a central server. The tracks are created continuously, as fast as they can be read off the COM port, and split up into hourly log files.
These tracks are converted to GPX files on the server, and from there will be uploaded to OSM.
Is this an okay approach? We'll end up with buckets of data about regional WA, including fire tracks, power poles, etc. But should I do anything else to prepare it?
The idea is that, once the data's back in from the trucks, I'll trace the tracks and add whatever other data I can (there's photos coming in too).