OpenStreetMap

scruss has commented on the following diary entries

Post When Comment
I wish I'd known about … about 2 months ago

Yes, I knew about that, but it's far more complicated than anything I could ever imagine.

MAPS.ME is now an editor 3 months ago

You said: So, every MAPS.ME user that edits the map submits their confirmed e-mail, so you can contact them. It works, as I have contacted some of the users during the beta testing.

So are you saying that edits are coming in from people who are not registered as OSM users, but are maps.me users?

Volunteered Geographic Information … why, that's us! 5 months ago

To various points:

  • Yes, the assumption that volunteer data is of lesser quality is annoying. I should reach out to CIPPIC and point them to research like Anita Graser's OSM quality assessment with QGIS: positional accuracy. Got any other links?

  • In a Canadian court, if the three tests described in When would a VGI website be liable in negligence for inaccurate information? were met, then the mapper could be found liable. If in the unlikely case of a link between that mapper and OSM(F) being found, then they too could be liable. The article makes the point that a licence disclaimer alone is *not** sufficient*.

  • Canadian municipalities must publish/maintain up-to-date maps, by law. Any phantom details in OSM knowingly supplied or left uncorrected and used by municipalities could open them to liability. ‘Could’ is the operative term here; there are no precedents, as the article says.

  • Regarding the Darwin comment, almost everything you think you know about the Stella Liebeck case is wrong.

Map Maker Canada schadenfreude 6 months ago

I don't know how, but there are features that appear to be point-for-point the same in Map Maker as OSM.

West Street Blues 7 months ago

I used Talky Toaster's exports a couple of years ago. They had their own shortcomings, not least their routing being very weak (though very scenic).

Shame about the address source problems. I usually map addresses from my own street surveys. Food hygiene open data is a good source, and we're looking at that in Toronto for OSM — though Canada jealously guards the copyright of its postal code data, so we have to look elsewhere for that.

OpenStreetMap Power Mapper Survey 7 months ago

Good project. Wish we could do the same in Canada, but we don't have federal energy policy.

West Street Blues 7 months ago

It's in the OpenMapChest garmin extract that gives the location as “W ST”. It's fine in the database, but is clearly being munged by the conversion script.

If you look at the changeset that included those restos, you may find a familiar user name … I don't have a reliable free source of address data for the UK, so I didn't add them. Slightly surprised that there aren't even address ranges for these locations. I was under the impression that the UK was pretty sorted for mappers and Ontario was a bit crap, but if you can't even find a decent curry using OSM …

Village Curry House is very good, btw.

The most inefficient way in North America 7 months ago

Of course it would be a CanVec way. Most of Northern Canada is horrid land use squares, all at the maximum node limit, splitting up lakes and real features. It's almost impossible to edit, and likely never will be corrected.

Should we teach JOSM to first-time mapathon attendees? 8 months ago

Any breakdown by user's OS? JOSM on Mac is deeply unpleasant.

(admission of bias: I will only use JOSM if absolutely nothing else will do the job.)

Is OSM business unfriendly? about 1 year ago

So many ‘disruptive’ business plans are really just give us your free stuff to resell cos we're IPOing in a week kthxbye. I'm glad that the OSMF is more about the continued existence of OSM.

Categorising paths over 1 year ago

Don't forget that "well recognised ideas ... in the UK" are usually classified as "wat?" by worldwide mappers. I grew up in Scotland so most OSM tagging seems vaguely sensible, but explaining it to my fellow Canadians ...? Nah.

Power Generation tagging, and a rather neat way of tagging wind farms over 1 year ago

Oh, and a couple of points I forgot to address that commenters helpfully brought up:

  • InfosReseaux - what with collector system losses, derated/oddly-rated turbines (I've operated a few that easily run at 120% nameplate), it's very hard to enter a useful plant:output:electricity for a wind farm.

  • Sanderd17 - yes, I know about other designs, but they're vanishingly rare compared to 3-blade HAWTs, and aren't very useful as generators.

Power Generation tagging, and a rather neat way of tagging wind farms over 1 year ago

Thanks, Dragons8mycat, but I think I've got this one. Over the last 20 years, I've prospected, designed, operated, consulted on or provided due-diligence services to around 3 GW of installed wind plants worldwide.

My complaint about method vs source is that it's redundant in almost all technologies. We should tag for what's here now, rather than create grandiose, impractical schemes that cover all future eventualities. None of us know what we're doing, after all …

tagging a green roof? about 3 years ago

better still!

tagging a green roof? about 3 years ago

perfect! Thanks!

tagging a green roof? about 3 years ago

It's not the colour, Dr K; it's the fact it's growing — so in your part of the world, it would be like having a xeriscaped roof.

Navigating by OSM over 3 years ago

That went rather well. Sure, it maybe sometimes sent me down a slower road that I might've taken, but at no time was I actually lost or confused. Saved me a ton of cash on Garmin maps, too.

Great work by the UK mappers and routers!

End of Newton Mearns mapping for now over 3 years ago

Thanks for the edits. I'm back visiting where I grew up, and you pretty much caught all the stuff I thought no-one but me would map ...

This week, I have been mostly mapping wind farms ... almost 4 years ago

Chaos99: really? I thought that Ctrl+V was a Java standard. Didn't know anything could change that. I started using the standard JNLP version because I was sick of having it complain about updates.

Tom Chance: it's not that hard to add machine type, especially when I've worked on or around the projects I've mapped. I can now recognize machine type from air photos, alas ;-) Failing that, there are public records or news releases from the manufacturers which can help.

This week, I have been mostly mapping wind farms ... almost 4 years ago

Of course! Most of it was trued up against open orthophotos anyway.