gmane.comp.gis.openstreetmap

Re: [OSM-talk] Hierarchy of places

On Tue, Dec 2, 2008 at 7:55 PM, Pieren <pieren3 <at> gmail.com> wrote:

The question is coming because the name finder gives the same
importance to Paris, USA and Paris, France (or something like that).
Instead of making more artificial granularity on the place hierarchy
which is just moving the problem a bit farther not fixing it, I would
suggest to use other tags like the population or the admin_level. Then
it is the responsibility of the software developer to decide which one
is the best for his application.

Do you propose to replace place=hamlet/village/town/city with a place=populated_place (or something similar) and just use otehr metrics for rendering London more visible than Idmiston?

I have a hard time seeing that village/town/city is an artificial granularity, and cannot see how adding a couple of more values makes them artifical either.

- Gustav

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Alex Mauer | 2 Dec 19:38

Re: [OSM-talk] Edit war on the wiki "map features"

Ed Loach wrote:
> Looks good to me. Describe what the road is like, rather than making
> subjective judgments. Every driver/cyclist/vehicle will be different
> and will have to make their own choices. You can't tag for that. Or
> perhaps usability:kia_cee'd:edloach=good /
> usability:unicycle:edloach=can't balance 

Except that leads to impossibly complex tagging and mapping requirements.

pothole_coverage
max_pothole_depth=
max_pothole_circumference=
max_pothole_length=
max_pothole_width=
average_pothole_depth=
average_pothole_circumference=
average_pothole_length=
average_pothole_width=
center_hump_height
max_rut_depth
max_stone_diameter
average_stone_diameter
max_root_diameter
average_root_diameter
minimum_ground_clearance
largest_unavoidable_bump_height for a motorcycle
largest_unavoidable_bump_height_for_a_car_2m_wide
largest_unavoidable_bump_height_for_a_bicycle
maximum_mud_depth
average_mud_viscosity
maximum_rut_depth
maximum_puddle_depth_during_rainy_season
maximum_puddle_depth_one_hour_after_5_cm_of_rain

Get out your measuring sticks and other tools, and be prepared to stop
regularly to measure!

There's more to surface quality than merely what it's made out of.
surface=* just doesn't cut it.

-Alex Mauer "hawke"

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Douglas Furlong | 2 Dec 18:45

Re: [OSM-talk] Edit war on the wiki "map features"

2008/12/2 Bernhard Zwischenbrugger <bz <at> datenkueche.com>

Douglas Furlong wrote:
2008/12/2 Bernhard Zwischenbrugger <bz <at> datenkueche.com <mailto:bz <at> datenkueche.com>>

pothole_ratio=0.2 #20% of the surface are potholes
max_pothole_size=50cm

If it is a frequently traveled road by motorised vehicle, that
size will not be very static.

That depends on the country!!

Only if the term "frequently" varies per country, other wise I'd expect the surface to deteriorate pretty much in the same way.

And as it's subjective, one could argue that it doesn't depend on the country at all, but the person thinking about it.

Any way, the point is, pot holes on roads that are frequently/heavily used WILL vary quite quickly, and I'm not sure it some thing we'd be looking to have as a static land mark.

If you ride on a Royal Enfield in India, information about potholes is probably the most important thing you need.
It's an information you don't find on other maps.

In the North America, Europe, China, Thailand,... there are good roads but most of the countries still have horrible roads.

I understand.

While I was traveling around Ecuador we went through some roads where the pot holes were the size of tables, and some of them almost as deep as a table.

However, my point is that being so specific about the size of a pot whole seems wasteful, as those pot holes grow very rapidly when being ripped apart by busses trucks and what have you.

A pot whole that is the size of a foot ball within weeks will become the size of a small fridge, at least those have been my experiences in Ecuador and some area's of eastern Europe.

If the map was being used by those repairing pot holes (a brilliant idea if ever there was one), then I'd agree that having those sort of diameters would be useful.
But for those looking to travel over it, I fail to see it's value, as it will be out of date shortly after being submitted, unless it was frequently updated.

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Olav Einervoll | 2 Dec 15:06

[OSM-talk] Properly tagging is_in of roads

Hi

To get proper searching of roads and stuff is this the correct way to do it?

For the village:
name: John's Village
place: village
is_in: Municipality, County, Country

and then for every road example:
highway: secondary
name: John's road
is_in: John's Village

(Will this let people search for John's road and county and get this result up?)

Thanks,
Olav

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Miriam Tolke | 2 Dec 15:02

[OSM-talk] How to tag this unknown barrier

Hello,

mapping some areas here I came across some barriers in several places which in my opinion don't fit in those
described in [[Map Features]]. I've uploaded a photo to http://wiki.openstreetmap.org/wiki/Image:Unknown_barrier.jpg.

How do you tag this?

Miriam

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Sebastian Spaeth | 2 Dec 11:53

Re: [OSM-talk] Where have all the contributors gone?

80n wrote:
> In my case I've run out of stuff to map.  Can someone build some more
> roads please? ;)

Same here. Or at the very least rename some roads please 

spaetz

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Sebastian Spaeth | 2 Dec 11:34

Re: [OSM-talk] Edit war on the wiki "map features"

Per wrote:
> Now we can see a big discussion, but no one did anything constructive!
> One thing is clear, we need a tag to describe the usability of ways.
> If you don't like smoothness invent a better scheme!
> Smoothness is better than nothing.

surface=cobblestones/paved/gravel/sand/dirt/grass
width=1m/2m
ele=100m vs ele=150m

?

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David Earl | 2 Dec 10:56

Re: [OSM-talk] Postcode searches in Namefinder

On 02/12/2008 09:07, elvin ibbotson wrote:
> Well, you learn something new every day! I never knew post codes were 
> subject to copyright. OSM has taught me it is naughty to trace off an OS 
> map or even read the name of a road from one. Now I'm worried about 
> sending letters! Should I add an extra line to the address crediting the 
> Post Office? And the rest of the address: are street names copyright 
> too? Somebody thought of the name of every street so I guess they must 
> own the copyright. Maybe I should just avoid sending letters to 
> addresses that haven't been there long enough for the copyright on the 
> postcode (and street name?) to expire. Now, is that 50 or 60 years? I 
> forget. Correction: I don't care.

It's not that any individual postcode is copyright: it's bulk use that's 
the problem in the UK. There is this thing called "database copyright" 
which allows you to copyright a collection of data to protect the 
investment you made in collecting it (never mind that in this case that 
was public investment - database copyright is an international concept, 
but it is the UK that chooses to apply it to public data).

So there's no problem about putting postcodes into OSM if you have a 
source for them that isn't a bulk data entry directly or indirectly from 
the Royal Mail database (which is commonly known as the "PAF file". If 
you knock on doors and ask people what their postcode is (and that's 
effectively what freethepostcode is trying to do electronically), you're 
fine.

Also, it's not just postcodes, it's the geolocation of those postcodes 
which is important to us, and isn't relevant (to you) when you're 
sending a letter.

Street names are facts, and you can't copyright facts. But if you use 
someone's list of street names, that's subject to their database copyright.

Population census data, as we discussed last week, also has the same 
restriction.

David

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maning sambale | 2 Dec 06:30

[OSM-talk] GIS bigwigs taking notice of openstreetmap

Just noticed this:
http://www.openstreetmap.org/user/James%20Fee/diary/4223

James Fee of http://www.spatiallyadjusted.com,
now contributing to Openstreetmap.  The heavyweights of geoblogging
are here!  Welcome!

Can't wait for Dr. Tomlinson, Goodchild and Burrough to chime in. ;)

cheers,
maning
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paul youlten | 1 Dec 22:49

[OSM-talk] Reuse of Ordinance Survey maps

http://spatialnews.geocomm.com/dailynews/2008/nov/17/news4.html

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paul youlten | 1 Dec 21:54

[OSM-talk] Reuse of Ordinance Survey maps

http://spatialnews.geocomm.com/dailynews/2008/nov/17/news4.html


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