Re: [Tagging] Counting lanes: include merging or turn lanes?

2010-07-05 Thread Stephen Hope
On 5 July 2010 12:21, Alan Mintz  wrote:
> I see the lanes tag
> being useful primarily in determining likely speed possible in making
> routing decisions, other factors being equal. It could also be useful in
> rendering. Neither would seem to sway me to add the extra lane for such a
> short distance.

One other possible use of lane tags is in routing.  If, at an
off-ramp, the number of lanes changes from 3 to 2, you could assume
the outside lane was forced down the offramp.  Some routing software
warns of such exits (as opposed to those where you must turn off to
leave the main road).

Stephen

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[Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread Mark Pulley
I'm was planning to add a church to OSM - the only problem is that the  
church doesn't have its own building, but rather uses a school hall.  
I've asked the Australian mailing list for ideas, but I thought I  
should ask here if anyone here has any tips or has come across a  
similar problem.


The church has used the school hall for about 10 years. I know of a  
few other churches in Australia that use other facilities like halls  
rather than using their own building. Presumably it happens in other  
countries, also this may be relevant for other buildings with multiple  
uses.


The school is currently marked with a way surrounding the grounds. I  
am planning to add the buildings. The church meets in the hall that is  
in one of the buildings (not the complete building).


The options so far suggested at talk-AU are:

- don't tag at all (are we marking 'buildings with pointy roofs' or  
'building that congregation meets in?)


- add a node for amenity=place_of_worship inside the relevant  
building, with note=church meets in school hall (this is my preferred  
option but I'm not sure if there's a better way to tag it)


- use amenity=school;place_of_worship over the building

- use a relation for the church over the building outline and a  
separate relation for the school for all the buildings (I'm not keen  
on this one as the amenity=school is already used for the school  
boundary).


- amenity=school , place_of_worship=yes (again I'm not keen on this one)

The church is located here:

http://www.openstreetmap.org/?mlat=-33.42085&mlon=149.57153&zoom=17

If anyone has any ideas, please let me/the list know. Thanks.

Mark P.



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Re: [Tagging] Counting lanes: include merging or turn lanes?

2010-07-05 Thread Colin Smale
 I have been thinking recently about how to represent "special lanes" 
in OSM. I have been working on a flexible scheme for this which I am 
calling "lane groups". Below is my current draft...If there is any 
support out there I will turn it into a wiki-page and get the ball 
rolling. All comments are welcome!


lanegroup tag

In order to support the construction of spoken navigation instructions 
and "junction view" functionality it will be necessary to indicate how a 
road is divided into (groups of) lanes and how these lanes are designated.


By grouping the lanes of traffic into groups, the characteristics of 
each group of lanes can be tagged, without having to define each lane as 
an individual way or having to define junctions as complex relations. 
The idea is to create a simple, pragmatic but effective way of recording 
the information into the database, without creating a substantial 
workload for mappers.


One-way ways
The lanegroups are numbered from left to right, irrespective of whether 
one "drives on the left" or not. So in the UK (driving on the left), at 
a simple motorway exit, lane group 1 would be the lanes to take the 
exit, and lane group 2 would be the lanes to continue on the motorway. 
At a similar motorway exit driving on the right, lane group 1 would 
continue straight on and lane group 2 is for taking the exit.


Two-way ways
Lanegroups are once again numbered from left to right *as seen from the 
"forward" direction of the way*. An approach to a cross-roads with 
dedicated lanes for turning left and right (in the UK) would therefore 
have (in the forward direction of the way) lanegroup 1 for turning left, 
lanegroup 2 for straight on, lanegroup 3 for turning right, and 
lanegroup 4 for the opposite direction. If the junction was symmetrical, 
approaching the same junction from the opposite direction (now in the 
reverse direction of the way) would have lanegroup 1 for the opposite 
direction, lanegroup 2 for turning right, lanegroup 3 for straight on 
and lanegroup 4 for turning left.


Tagging
All tags are to be applied to the Way only.
Information related to the lane group could include:
* number of lanes
* direction as related to the "direction" of the way
* intended direction
* access restrictions for certain vehicle classes (this can cover 
dedicated bus lanes etc)
* access restrictions for certain times of day (this covers special 
rush-hour-only lanes)

* signage
There is currently no way to have a list of subtag values other than 
key=value1;value2;value3 etc.
As the number of lanegroups will in practice not exceed four or five I 
suggest using simply lanegroup1, lanegroup2 etc.


Example - motorway exit, driving on left
highway=motorway
oneway=yes
lanes=2
lanegroup1:lanes=1
lanegroup1:intention=exitleft
lanegroup1:signage=A1234;Town Centre
lanegroup2:lanes=2
lanegroup2:intention=straighton
lanegroup2:signage=M1;The North

Example - urban crossroads, driving on left, no left turn for HGVs
highway=primary
oneway=no
lanegroup1:lanes=1
lanegroup1:intention=turnleft
lanegroup1:hgv=no
lanegroup2:lanes=2
lanegroup2:intention=straighton
lanegroup3:lanes=1
lanegroup3:intention=turnright
lanegroup4:lanes:2
lanegroup4:direction=reverse

Note that I do not intend this to be used for routing as such. There are 
already methods of indicating turn and access restrictions etc. 
Lanegroups are to form a basis for "junction view" type applications.


Editor support
It would be nice if the OSM editing applications were to support 
lanegroups. One action which would benefit from support is reversing a 
two-way way's direction - which would affect the numbering of the 
lanegroups.


Further work
For best effect it would be nice if we could arrive at a consensus on 
the two subtags which are really new, namely "intention" and "signage". 
To kick things off I would like to suggest the following:

intention
mergefromleft (for traffic joining from left)
turnleft (more or less 90 degrees)
exitleft (shallow angle)
straighton
exitright (shallow angle)
turnright (more or less 90 degrees)
mergefromright (for traffic joining from right)
signage
line1;line2; etc
possibly a way of identifying the road number, such as wrapping 
it in some kind of brackets, e.g. [A123], so it can be displayed with 
suitable emphasis
Also the relationship of the main "lanes" tag to the lane groups should 
be explicitly defined. I suggest that it contains the number of 
"through" lanes only, so a typical motorway will have lanes=2 or lanes=3 
for most of its length, with the lanegroups being used for occasional 
extra lanes for the exits.



On 04/07/2010 22:41, Alan Millar wrote:
How are people using the "lanes" tag on motorways?  Do you count the 
on/off ramps that come and go?


On a lot of the freeways near me, they have two main driving lanes on 
each direction, so I set it up as a dual carriage way with one-way 

Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread Cartinus
On Monday 05 July 2010 10:51:25 Mark Pulley wrote:
> - add a node for amenity=place_of_worship inside the relevant  
> building, with note=church meets in school hall (this is my preferred  
> option but I'm not sure if there's a better way to tag it)

I'd use this one.

-- 
m.v.g.,
Cartinus

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread Martin Simon
2010/7/5 Mark Pulley :
> I'm was planning to add a church to OSM - the only problem is that the
> church doesn't have its own building, but rather uses a school hall. I've
> asked the Australian mailing list for ideas, but I thought I should ask here
> if anyone here has any tips or has come across a similar problem.
>
> The church has used the school hall for about 10 years. I know of a few
> other churches in Australia that use other facilities like halls rather than
> using their own building. Presumably it happens in other countries, also
> this may be relevant for other buildings with multiple uses.
>
> The school is currently marked with a way surrounding the grounds. I am
> planning to add the buildings. The church meets in the hall that is in one
> of the buildings (not the complete building).
>
> The options so far suggested at talk-AU are:
>
> - don't tag at all (are we marking 'buildings with pointy roofs' or
> 'building that congregation meets in?)
>
> - add a node for amenity=place_of_worship inside the relevant building, with
> note=church meets in school hall (this is my preferred option but I'm not
> sure if there's a better way to tag it)
>
> - use amenity=school;place_of_worship over the building
>
> - use a relation for the church over the building outline and a separate
> relation for the school for all the buildings (I'm not keen on this one as
> the amenity=school is already used for the school boundary).
>
> - amenity=school , place_of_worship=yes (again I'm not keen on this one)
>
> The church is located here:
>
> http://www.openstreetmap.org/?mlat=-33.42085&mlon=149.57153&zoom=17
>
> If anyone has any ideas, please let me/the list know. Thanks.

I'd tag the school area with amenity=school and the hall with
building=school_hall & amenity=place_of_worship.
This allows you to keep building type and function seperate.

As "amenity=place_of_worship" doesn't mean "church", but rather
"religious place", I also tag "normal churches" as building=church &
amenity=place_of_worship.

-Martin

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread John Smith
On 5 July 2010 21:43, Martin Simon  wrote:
> I'd tag the school area with amenity=school and the hall with
> building=school_hall & amenity=place_of_worship.
> This allows you to keep building type and function seperate.

How many uses should we tag, what if it's mostly used for basketball 5
days of the week? What about school dances? Parent/Teacher meetings?
Scouts?

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread Martin Simon
2010/7/5 John Smith :
> How many uses should we tag, what if it's mostly used for basketball 5
> days of the week? What about school dances? Parent/Teacher meetings?
> Scouts?

Well, from the description, this building has been used frequently and
for a very long time as a religious meeting place by the same
community - for me, that's a reason to tag it as such.

I don't know how many uses *you* want to tag - I want to tag the
important and stable ones for now.

-Martin

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread John Smith
On 5 July 2010 21:59, Martin Simon  wrote:
> I don't know how many uses *you* want to tag - I want to tag the
> important and stable ones for now.

I'm guessing most school halls would have a number of regular purposes...

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread Martin Simon
2010/7/5 John Smith :

> I'm guessing most school halls would have a number of regular purposes...

building=school_hall...

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread M∡rtin Koppenhoefer
2010/7/5 John Smith :

> How many uses should we tag, what if it's mostly used for basketball 5
> days of the week? What about school dances? Parent/Teacher meetings?
> Scouts?


We should map all of them. Please invent a scheme that allows for this ;-)

cheers,
Martin

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Re: [Tagging] Tagging churches that use non-church buildings.

2010-07-05 Thread John Smith
On 5 July 2010 23:53, M∡rtin Koppenhoefer  wrote:
> We should map all of them. Please invent a scheme that allows for this ;-)

Seems like over kill, just like storing any bits of transient
information in OSM does, but if I were to try to do something like
this I'd tag the node/area with the primary information, in this case
it's a school hall, and then add relations for the uses

type=use
amenity=place_of_worship
...

not sure about the role... ?

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Re: [Tagging] Jewellery shop

2010-07-05 Thread pavithran
On 4 July 2010 15:33, Alan Mintz  wrote:
>> > I have seen http://wiki.openstreetmap.org/wiki/Tag:shop=jewelry

Since very few have objection with this tag . Can I ask it for
rendering in osmarender ?
Regards,
Pavithran

-- 
pavithran sakamuri
http://look-pavi.blogspot.com

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Re: [Tagging] Counting lanes: include merging or turn lanes?

2010-07-05 Thread Paul Johnson
On Sun, 04 Jul 2010 19:21:36 -0700, Alan Mintz wrote:

> At 2010-07-04 13:41, Alan Millar wrote:
>>How are people using the "lanes" tag on motorways?  Do you count the
>>on/off ramps that come and go?
> 
> Generally, no.
> 
> 
>>On a lot of the freeways near me, they have two main driving lanes on
>>each direction, so I set it up as a dual carriage way with one-way on
>>each side, and mark each side as lanes=2.
>>
>>The question comes in for the on/off ramps.  There are sections where
>>two intersections are somewhat close together, and so there is an on-
>>ramp, a long extended merging lane, then the next off ramp. Strictly
>>speaking, there is a third lane for some distance between the the ramps,
>>but it isn't a "through" lane.  There are only 2 driving or through
>>lanes in that section of freeway.
>>
>>See for example hwy 217 between Denney and Allen at:
>>
>>http://www.openstreetmap.org/?
>>lat=45.473345&lon=-122.786743&zoom=18&layers=B000FTT
> 
> I generally, form the intersection of the ramp with the main roadway at
> the point where the solid line starts or ends - the first place you can
> legally merge from an onramp or the last place to an offramp. In this
> case, this leaves too short a section of 3-lane main roadway to bother
> breaking it just in order to tag that short section with the extra lane.
> I see the lanes tag being useful primarily in determining likely speed
> possible in making routing decisions, other factors being equal. It
> could also be useful in rendering. Neither would seem to sway me to add
> the extra lane for such a short distance.
> 
> I-10 in this area
> http://www.openstreetmap.org/?
lat=34.03753&lon=-118.280316&zoom=18&layers=B000FTF
> might end up being an exception in some places (I didn't look closely,
> but it comes to mind).
> 
> 
>>I have only been counting the driving or through lanes, so I have tagged
>>this as lanes=2, and just ignored the short extent of the extra merging
>>lane.
> 
> Agreed.
> 
> 
>>Likewise, there are suburban streets that have an extra turn lane just
>>before an intersection, like Murray Blvd at:
>>
>>http://www.openstreetmap.org/?
>>lat=45.4814&lon=-122.8261&zoom=18&layers=B000FTTT
>>
>>As one big street with two driving lanes each direction, I've tagged it
>>as lanes=4 and ignored the short extent of the extra turn lane.
> 
> Because that center lane is present between intersections as a center
> turn lane, I tag lanes=5. This, to distinguish it from roads where there
> are only 4 lanes (2 in each direction) for the stretches between
> intersections, since left turns without that center turn lane cause more
> congestion (again thinking of speed estimation).

I tend to discount restricted, merging and turn lanes myself, and count 
restricted lanes as a seperate way as a stop-gap measure until lane 
restrictions are more or less sorted.  I wish I had a better tagging 
solution than that, since a lot of interchanges in Portland are behind 
blind curves in no-lane-change sections.


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