OSMonth Day 15

  • Done lots of organising for the 3 upcoming parties and the conf over the past week.
  • Figured out why the gpx import keeps stalling – someone keeps uploading mpegs which the importer thought were xml files in a strange charset, then crashing when it couldn’t parse it – fixed
  • Brought back the wiki machine… seems the VM just isn’t up to it any more, will need to think how to proceed

State of the Map dates confirmed!

Thanks to the generous support from the School of Environment and Development at the University of Manchester we have dates and location confirmed for the first OSM conference!

  • 14th and 15th July 2007
  • Manchester university (map)

This means if you want to go to guadec then you can straight afterwards. We have a wiki page for organising things, please help by hacking it, adding transport ideas etc for people considering coming.

Turk meets GIS

Theres an absolutely fascinating use of Amazons Mechanical Turk (?) right now. There’s a HIT (a small task you get paid almost nothing to complete) that involves GIS:

Geospatial Vision are paying people to do image recognition on sequential video stills from a car that they are apparently then recombining in to videos. These are on their (flash only, sigh) site.

You are paid 5 cents to tag 50 images with yellow lines, manholes, drains, bollards and pedestrian crossings. They are also, from looking at the videos, using these locations to then magically classify the sign type (one way, no entry, speed limit etc). Most images have only one feature if at all, there were about 2,000 HITs last night and at 25 frames a second that puts it at about an hour of footage for $100. That is insane.

If you wanted to get data out of it, the video stills themselves could be captured from your screen like the above screen shot and put back in to a movie. People and number plates can be seen in the images… and street signs so you could figure out where they are. You could add bad data – bollards in the sky or whatever. Amazon have various methods to combat these attacks. But it’s all academic as they’re putting at least some of the work on their site anyway.

It strikes me that this is just scratching the surface of the potential of this class of problem, Mechanical Turk is still only known to a small subset of tech people really. People with big data sets would want entire teams of lawyers to look at this and have Snow Crash-esque schemes to keep people from ‘stealing’ their precious data. Could you imagine the OS ever touching this with a barge pole?

The barrier to entry is a little high in that you have to create a flash app or similar if you want to do more interesting HITs but simpler ones are done automagically with forms by amazon. The other barrier is that like many other companies they think the entire world ends at the edge of CONUS so you can’t really make use of it unless you have a US bank account.

There’s another HIT which just asks for an idea from you – what small program would you like to see that doesn’t exist? I imagine the person who did that one just sitting back and browsing ideas for things to work on. How meta can you get?

So we now live in a world where you can effectively treat data storage (Amazon S3), processing (Amazon ECC) and mass non-linear human intelligence (Mechanical Turk) as infinitely cheap and available. You can get programming, design, legal advice and more from rentacoder, elance and more.

Given this, I can’t think of much that you don’t have covered in Phase 1 of your average business plan. Or to look at it another way, the google kids have been living in this world for maybe 4-5 years.

So readers, if you had a big dataset what would it be and how would you get it processed using the above? Best idea gets $10 worth of HITs.

OSMonth Day 14.5

  • Spent the morning trying to build ruby bindings for mapnik, didn’t get anywhere, mailed mapnik-devel. update short debate on mailing list, looks easy if you know C++, mapnik, swig and python well enough but I don’t. Someone please make swig bindings for this and I’ll have your babies.
  • brought back stevecam. It was pointing out my window and I forgot about it sorry

OSMonth Day 14

What a morning! Spent it all organising various parties and the up coming conference. There’s now a party mailing list – if you want to help organise or run a mapping party please subscribe there. It’s a transitory list so feel free to just subscribe for the period of organising the party you are interested in! I’ve deprecated the old talk-london/midlands and iow lists. I’ve done some tile stuff too – they’re rendering now whilst I do other things.

My Birthday Map

So my birthday is usually a total waste of time because it’s very close to Christmas Day. It means two-in-one presents that are a bit rubbish and everyone’s gone to somehwere better for the holiday, but this yeah I got an awsome present:

It’s a map of central London, approximately similar to this openstreetmap. I used to stare at it whenever I went past the antiques shop in central London (it was on my way home) it hung in. I even tried to buy it once but then thought I was a bit mad and didn’t as I could buy a low-end laptop for the price. It’s about a meter and a bit across by about half a meter down. It’s framed in gold leaf and is original, though I’m unsure exactly what that means in this context.

There are a few things I like about this. Firstly, it’s where I used to live on the western rim of Regents Park. The building is in the map (dated 1834), along with favourite haunts and most of my paper round(s). It also has where I (nominally) went to university and several other places I lived, pubs I’ve died in. So I know the area fairly well and it’s nice comparing it to what it looks like today.

I like the wave of development. If you look at Regents park and then east and west of it along a parallel, you can see a wave of development heading northward turning farmland in to London. A lot of rich people were made as these fields were built upon and their great-great-great (* some big number) grandsons still own vast chunks of it.

It’s slightly later than the periods of history that I like to read about but still very related map-wise. It reminds me of openstreetmap. OSM is incomplete and expanding to conquer everything that is un-mapped – you can see a freeze-frame of our map by just browsing it today. Similarly, the map shows a freeze-frame of those same streets being laid down in the first place as they swallowed up villages to build London.

I have no idea if or how it could be scanned in but I’m open to ideas. A lot of the map is vastly different (Paddington, Marylebone, Euston and Kings Cross stations arn’t there for example!) so I havn’t used it (much) for deriving street names. Interesting anyway.

So a big thank you to all who bought it for me 🙂

OSMonth Day 13

Lucky 13 begins

  • Told list maintainers that they can change the language of their list pages (result of yesterdays stuff)
  • Doing tile stuff (they’re getting out of date, time to fix them)
  • Various party organising things (we have a room for sheffield thanks to sheflug it looks like!)
  • Went out and did some mapping whilst waiting for some tiles to generate (see below). Accidentally deleted the trace off the GPS. d’oh!
  • Tile stuff done for today. There’s a new layer on the map, ‘Mapnik db’, which is todays planet dump. All the tiles come from a database and 3 CPUs are rendering every tile from zoom 0-18 as I type. Currently it’s good down to about zoom 11, we’ll see where it is tomorrow.

Done!

OSMonth Day 12.5

Spent this morning doing boring tax things, so a half day to come. Stuff done

  • (actually a couple of days ago) moved map page to point at almiens new osmarender home on the dev server.
  • Map parties! Theres one in in London on 27-28th January. Then in Bristol on 24th-25th Feb. The another in Sheffield on 24th-25th March
  • Trying to confirm a good venue for london meet
  • More initial page and FIXMEs for Bristol meet. Mailed a bunch of people in Bristol for help with venues etc
  • Contacted sheflug (mail to their list is pending moderator approval) about help with organising the Sheffield party. Venue recommendations etc.
  • Replied to a ton of mail. Fixed link on freethepostcode and in svn
  • added lots of languages (all of ’em) to lists.openstreetmap.org’s mailman, but I don’t see that it’s done any difference. (i18n on the info pages, not lots more lists).
  • Went out mapping for an hour, tagged it all up. I’m ashamed to say there is still stuff near me unmapped!

Good new year from Imi

Hi all,

to fall into line with Steve, I wish you all a good new year 2007.

Although nobody found me at the CCC this year (what a bummer.. but I didn’t prepared any cookies anyway ;-), I still did some coding on JOSM and also made a very small tutorial to demonstrate some of them. Not enough for a new version, but postponed is not abandoned! 😉

The tutorial is flash this time, so you can watch it online too (anyone knows a flash player for firefox/linux/AMD64?)

Get the tutorial at http://josm.eigenheimstrasse.de/download/tutorials/preferences_toolbar_reorder.html

GOOD NEW YEAR!

Imi.