OpenStreetMap

andygates's Diary

Recent diary entries

One Thousand Miles Later

Posted by andygates on 26 May 2011 in English.

Earlier this month, I rode the End-to-End using OSM on my Garmin as my primary navigation resource.

In a nutshell: it was great. 1104 miles covered in three weeks. All the way through, either using routing or moving-map display, it was reliable and accurate and just right. There was one dumb-routing moment (that farm track was not rideable!) and only a couple of ways absent from the map.

I had a couple of moments of drama that gave me warm fuzzy feelings toward the OSM community: one incredibly mundane - I was *desperate* for a loo and the tourist signs had me muddled; and one utterly critical - my old rear wheel collapsed and I needed a bike shop, urgently!

At this point, Bike Hub came to the rescue. Bike Hub is an app that uses OSM data so I was able to hit the "Bike Shops Near Me" button and -- joy! Dryburgh Cycles, seven miles away. A short taxi ride and I was repaired and rolling again.

I have, as the saying goes, eaten my own dogfood, and it was delicious and nutritious.

Location: Crediton, Mid Devon, Devon, England, United Kingdom

The Power!

Posted by andygates on 18 September 2010 in English.

Tom Chance has built a KML that presents power generators in the UK - it's an extension of one he made for London, and here it is: http://tomchance.dev.openstreetmap.org/kml/power_uk.kml

So, I've been checking the tags of the Ecotricity wind farms and very fine they look. It would make a great school project, having kids scurry around finding all the green gennies in their patch.

Tagging guidance here: http://wiki.openstreetmap.org/wiki/Tag:power=generator

Pakistan mapping and canals, oh my!

Posted by andygates on 19 August 2010 in English.

Working from the limited high-res Yahoo imagery and the excellent Perry-Castaneda mosaic put up yesterday by Jean-Guilhem, I've been ticking through bare bits of Pakistan map adding what look like the most important features (settlement names, metalled roads, railway lines, major waterways). There's a *lot* to do, because there's a lot of unmapped territory.

I hear that some post-flood imagery is coming online soon and it'll be good to go over that and tag broken bridges, destroyed road sections and refugee camps. For reference, the special tags that developed out of the Haiti response are here: http://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Tags/Humanitarian_Data_Background -- here's where you'll find bridge=collapsed et al.

One thing I've noticed is that some other mappers are laying roads where black straight things are... but follow the photos along for a while and they turn out to be canals (most roads are dusty). Caveat cartographer! Double-caveat when you have roads running *alongside* canals, which is also very common.

Interesting to note that the current waterway tagging schema is implicitly drainage-biased (it's all the soggy British and Dutch in the project!); I'm using waterway=canal and waterway=ditch for major and minor irrigation channels, but I wonder if that's ideal?

Location: Higher Wear, Countess Wear, Topsham, Exeter, Devon, England, EX2 6DG, United Kingdom

Petit Goave

Posted by andygates on 20 January 2010 in English.

Some excellent people had already done the centre of PG by the time I got to it, so this evening was polishing, fixing some wonky bits, expanding detail around it and then banging through the Matrix to ensure that useful roads and crossings were all solid.

If you haven't seen it, the Matrix is here: http://projekte.eiops.de/osm-matrix/ - it's the quality-control tool for this project.

Location: 11e Ravine Sèche, Commune Petit-Goâve, Arrondissement de Léogâne, West, 6220, Haiti

Mkgmap and marking long-distance paths

Posted by andygates on 13 October 2009 in English.

Spent some time last night trying to get mkgmap to produce a Garmin map with long-distance hiking paths marked out. And, er, failed.

The paths are a mixture of highway types sharing a route relation network=uk_ldp (for example, the Ridgeway, http://www.openstreetmap.org/browse/relation/8879 ).

I wonder if anyone has an easy guide for how to do this? Tying the 'relation' and 'line' file settings together is bending my head...

Trail running and Route Relations

Posted by andygates on 23 September 2009 in English.

I've somehow got signed up for a marathon along the Ridgeway, so I'll be bashing out runs around East Devon up on the heaths. Let there be many high-quality bridleway traces in the coming weeks!

Does anyone know a render that shows the long walking routes? Or, for that matter, a Dummies guide to relation-tagging the darned things. I'm having a dim moment.

Location: Newton Poppleford and Harpford, Newton Poppleford, East Devon, Devon, England, United Kingdom