OpenStreetMap

SimonPoole has commented on the following diary entries

Post When Comment
How large are our national contributor communities and how are they developing? 3 months ago

@51114u9 South, I'm aware that this is controversial, but probably less than including it in NA. See the caveats.

How large are our national contributor communities and how are they developing? 3 months ago

@RobJN I'm on the record as saying this before: it is reasonably easy to cause spikes in our growth by media coverage (we know that because it is easy to track cause and effect in such cases), changing the long term trends seems to be very difficult. There are just are handful, or even less, events that have affected that, the introduction of Potlatch, the licence change, iD. I could speculate on why that is, but the truth is that we don't actually know what keeps our growth going (my take on it is that it is actually word of mouth but thats unproven).

The good thing to take away from the country numbers is that they show that even in the countries we consider developed in an OSM sense growth rates have flaten out but growth is continuing, in other words there is no reason to believe that you can't reach > 1 mapper per 1000 in the UK too.

How large are our national contributor communities and how are they developing? 3 months ago

@imagico theoretically yes, however living as I do in a country that is a reasonably popular tourist destination there has been no indication that this is a significant effect over the last two years (where we have looked at every single new mapper).

The other problem is that this effect would only be detectable at all if the mapper in question actually continued to map at home over a significant period of time, which as we know most don't. (there were only 33'197 contributors with more than 100 changesets as of this September).

Mapping my hometown Rajahmundry 3 months ago

@Jothirnadh (welcome to OSM) lots of us have been through the misaligned imagery valley of grief :-) Which includes major parts of Europe just a couple of years back.

The main problem seems to be that there is no reference information right now to adjust the imagery.

There are essentially not so many ways to generate/get such information:

  • make precision measurements with a GPS device of well defined features that have good visibility on the imagery (for example a corner of a 1 to 2 storey building on which you can access the roof)

  • generate (multiple) GPS tracks over crossings and turn offs (you will need multiple tracks on both sides of the road to get resonable information)

  • get official reference point information from the governement or similar (typically this is not so helpful because the points themselves tend not to be visible on imagery)

Simon

Advancing Columbus 3 months ago

@union4 Naturally if it is just a misunderstanding and you don't intend to import but want to trace the outlines, sorry. However you should understand that we have suffered and continue to suffer from hit and run imports in the US that as a tendency tend to be badly executed on top of that.

Advancing Columbus 3 months ago

Have you read http://wiki.openstreetmap.org/wiki/Import/Guidelines ?

Quantifying HOT participation inequality: it's complicated. 4 months ago

The original question was

Is the workload more evenly spread throughout the community when it comes to Missing Maps tasks as opposed to HOT tasks?

I'm of the opinion that "workload" cannot be interpreted different than actual contributions to producing a usable map. Given that, you do not answer the question. You do however, again, try to spin things so that missing maps looks better than it is.

Motivationslos 4 months ago

Das schöne an OSM ist, dass man ja viele verschiedene Sachen mappen kann. Gebäudemappen geht eigentlich allen auf den Geist mit der Zeit, mach einfach nach Bedarf (zum Beispiel wenn du Adressen hast zum Ergänzen).

Halfway to vespucci 0.9.7 4 months ago

Thanks mvexel.

Wrt MapRoulette the Notes/Osmose code was written with an eye to including further services with similar workflow, from that pov adding MapRoulette wouldn't be an issue. However you would need a public API in some form (likely returning all tasks from all challenges in a bounding box and a call to update the state of a task).

Audio Mapping first steps 4 months ago

Hmm, audio mapping was my preferred method of gathering data more than 5 years back when I started with OSM. It is bearable for larger features (name of the road you are currently on) and quite enviroments (non-moving or enclosed) but doesn't really work due to:

  • positional errors (I stll now and then run in to stuff that I ampped back then which is "one-off")
  • spelling (anything with a name is dicey)
Aktualisiert 4 months ago

@Hendric Stattmann Schweiz != Deutschland

@Pico47 kann ich dich noch motivieren ein bisschen bei http://wiki.openstreetmap.org/wiki/OSM_-_GWR_Street_and_Place_Names_Comparison resp. http://qa.poole.ch/ch-roads/ mitzuhelfen? Natürlich sind Hausnummern auch immer gern gesehen (und alles andere auch :-)).

Postigs question - find out the unnecessary points that exist on the map 5 months ago

Besides that reducing the size of the planet file by such a small amount woudn't justify anything, removing the nodes creates a new version of the way adding to general database bloat.

Further none of the editors nor the API support downloading elements that have no nodes in the requested bounding box. As a result it makes sense to have not all too far apart nodes on even completly straight ways..

It should be noted that we have massively (as in multple nodes per meter) overnoded ways from imports that naturally can be simplified when detected.

Expanding the OSM Community 6 months ago

https://www.openstreetmap.org/user/SimonPoole/diary/24124

Mapping turn lanes in OpensStreetMap 6 months ago

@andygol how many of the increasing number of relation based turn lanes are from you and other Mapbox employed mappers?

Why am I against wholesale import of administrative boundaries from any 3rd party source for the Philippines 6 months ago

@maning & @seav the wording is simply a bit ambigous. First citing a third party that the licence is incompatible and then continuing with "Even if the licence is compatible ...." it really isn't and the permission we got for a handful of countries was after the fact in dire circumstances.

To be very clear: anybody that imports GADM data -now- -will- get caught and the data -will- be removed immediately..

Why am I against wholesale import of administrative boundaries from any 3rd party source for the Philippines 6 months ago

I'm not sure why you are assuming that GADM data has a acceptable licence for OSM (no issue with the rest of your post though).

Please see: http://wiki.openstreetmap.org/wiki/Contributors#GADM_.28Global_Administrative_Areas.29

How do you map while on the go? 6 months ago

EdLoach naturally you could have created the note with Vespucci and in 0.9.7 uploaded it when you got home and checked all Osmose reported problems in the area too :-)

But seriously it really depends on what you are doing, some times I'll just snap a photograph, sometimes I'll enter stuff on the road immediately (typically POIs and housenumbers). I'm not claiming that there is a one size fits all solution, not even for myself.

How do you map while on the go? 6 months ago

BTW I believe that post 1.0 release versions of Pushpin are actually better than what I wrote and provide at least some support for non-node objects (pushpin overall isn't a large source of edits in OSM in any case for my reasoning on that see below).

As to a user friendly editing tool, sure it is possible, just take the effort for iD and mulitply by 10. iD already tries to do smart things like automatically generating a multi-polygon when you split a polygon/closed-way and it serves as a good example to gauge how much extra effort would be needed to expand that kind of level of abstration to all of OSM and where the pitfalls are.

But the real question is: is there ienough breathing space between pure surveying apps and full blown editors (Go Map! and Vespucci) to actually get a enough of a user base that the developement effort can be justified., I'm fairly sure that either you simply want to survey with implied adding the data post-survey at home, or if you enter it in to OSM directly you don't really want to touch it again and keep post-survey clean up to a minimum. The consequences of the later is that you really do need to able to do nearly everything that you can do on the desktop. I should point out that surveying on the move is not the only use case for mobile editors so they will tend to have more functionality than "add a POI" apps will have in any case.

How do you map while on the go? 6 months ago

BTW my recommendation for a survey app on Android continues to be OSMtracker plus OpenCamera if you just want to take photographs (OpenCamera works well Vespucci too).

How do you map while on the go? 6 months ago

Yepp, just as all the other apps which

a) don't show you what is already in the OSM data

b) take the hammer approach to editing (replace nodes with nails)

pushpin is just one of a number with the same issue not worse or better than the whole lot.