Re: [OSM-talk] Buildings and roads

2008-12-19 Thread Matthias Julius
Nathan Mixter  writes:

> A "major road" doesn't have to be wide by default. I hereby invite you
> to visit Guadarrama, where a trunk road (the "N-VI") has only two
> lanes, and buildings are just one meter away from the asphalt.
>
> Yes, I agree that the rendering is messed up at low zoom levels (see
> Naga City in the Phillipines), but at higher zoom levels, I see no
> other easy solution.
>
> (In a perfect world, a road would be not a line, but a polygon, so the
> width and area could be perfectly known).

You could tag the roads with their width and renderers could render
them accordingly - if they wanted to.

This is actually only sensible for the highest zoom levels.

Matthias

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Buildings and roads

2008-12-18 Thread Iván Sánchez Ortega
El Jueves, 18 de Diciembre de 2008, Simone Cortesi escribió:
> where can these boundary data be found?

The details can be found over here:

http://wiki.openstreetmap.org/wiki/OSM_Philippines_Data_Import#Naga


Cheers,
-- 
--
Iván Sánchez Ortega 

Dijo: "Yo soy feliz". Naturalmente se trataba de un necio.


signature.asc
Description: This is a digitally signed message part.
___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Buildings and roads

2008-12-18 Thread Simone Cortesi
On Thu, Dec 18, 2008 at 11:00 AM, Iván Sánchez Ortega
 wrote:

> Well, there is still a lot of data to import (land use and boundaries
> IIRC), but I was too lazy to program the conversion script to take into
> account the OSM relationships needed to correctly tag the multipolygons
> (polygons with holes). Ant I still don't know if they would be rendered
> alright by both mapnik and or/p.
>
> So many things in the back burner... :-(

where can these boundary data be found?

-S

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-18 Thread Patrick Weber

Or literally through the building !

http://en.wikipedia.org/wiki/Gate_Tower_Building

This case is also interesting when it comes to tagging layers. what 
takes precedence in rendering, the road or the building?



OJ W wrote:

On Wed, Dec 17, 2008 at 5:49 AM, Nathan Mixter  wrote:
  

Just wondering. Shouldn't buildings be rendered behind roads.



Not if the building is over the road

http://picasaweb.google.com/hemrajpathare/CopenhagenPhotos#5225837680766253506

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk
  
begin:vcard
fn:Patrick Weber
n:;Patrick Weber
org:University College London;Department of Management Science and Innovation
adr:;;Gower Street;London;;WC1E 6BT;United Kingdom
title:Engineering Doctorate Student
tel;cell:+44 (0) 7854840450
note;quoted-printable:Skype: think_petz=0D=0A=
	LinkedIn: http://www.linkedin.com/in/pweber
version:2.1
end:vcard

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-18 Thread Andy Robinson (blackadder-lists)
OJ W wrote:
>Sent: 18 December 2008 11:19 AM
>To: Nathan Mixter
>Cc: openstreetmap
>Subject: Re: [OSM-talk] buildings and roads
>
>On Wed, Dec 17, 2008 at 5:49 AM, Nathan Mixter 
>wrote:
>> Just wondering. Shouldn't buildings be rendered behind roads.
>
>Not if the building is over the road
>
>http://picasaweb.google.com/hemrajpathare/CopenhagenPhotos#5225837680766253
>506


Will that's arguably a bridge with a building on top. Plenty of those
examples. http://en.wikipedia.org/wiki/Pulteney_Bridge is a good one. Its
easy enough to create if you make an area and give it the bridge tag. The
building/buildings then sit within the outline. Then it just needs some more
styles adding to the render style sheets.

Cheers

Andy
>
>___
>talk mailing list
>talk@openstreetmap.org
>http://lists.openstreetmap.org/listinfo/talk
>
>No virus found in this incoming message.
>Checked by AVG - http://www.avg.com
>Version: 8.0.176 / Virus Database: 270.9.19/1854 - Release Date: 17/12/2008
>7:21 PM


___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-18 Thread OJ W
On Wed, Dec 17, 2008 at 5:49 AM, Nathan Mixter  wrote:
> Just wondering. Shouldn't buildings be rendered behind roads.

Not if the building is over the road

http://picasaweb.google.com/hemrajpathare/CopenhagenPhotos#5225837680766253506

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-18 Thread Peter Miller


On 18 Dec 2008, at 10:52, Steve Chilton wrote:

Equally roads don’t usually run over buildings – which could be case  
if reversed. Basically auto-rendering of these two can not be  
correct for all cases/zooms.
Needs intelligence to say “nudge that building away from the road in  
this instance” – later?




Surely this is just a great example demonstrating that catography is  
harder than it seems at first sight. The problem is that the roads are  
not draw to their real width and therefore the building must be nudged  
or shrunk so as not to collide with the super-wide roads as rendered.


What we should not do is move the building outlines on the ground to  
make the rendering work, as far as I am concerned it is a rendering  
problem even if it is  a hard one.


Regards,


Peter

Cheers
STEVE

Steve Chilton, Learning Support Fellow
Manager of e-Learning Academic Development
Centre for Educational Technology
Middlesex University
phone/fax: 020 8411 5355
email: ste...@mdx.ac.uk
http://www.mdx.ac.uk/schools/hssc/staff/profiles/technical/ 
chiltons.asp


Chair of the Society of Cartographers: http://www.soc.org.uk/

SoC conference 2008:
http://www.abdn.ac.uk/cartographers08/

From: talk-boun...@openstreetmap.org [mailto:talk-boun...@openstreetmap.org 
] On Behalf Of Nathan Mixter

Sent: 17 December 2008 05:50
To: openstreetmap
Subject: [OSM-talk] buildings and roads

Just wondering. Shouldn't buildings be rendered behind roads.  
Currently buildings are drawn above a road when the road is wide  
like a highway or major road. Obviously buildings don't cut into  
roads. If the road layer is on top this won't happen.

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-18 Thread Steve Chilton
Equally roads don't usually run over buildings - which could be case if
reversed. Basically auto-rendering of these two can not be correct for
all cases/zooms.

Needs intelligence to say "nudge that building away from the road in
this instance" - later?

 

Cheers

STEVE

 

Steve Chilton, Learning Support Fellow
Manager of e-Learning Academic Development
Centre for Educational Technology
Middlesex University
phone/fax: 020 8411 5355
email: ste...@mdx.ac.uk
http://www.mdx.ac.uk/schools/hssc/staff/profiles/technical/chiltons.asp

Chair of the Society of Cartographers: http://www.soc.org.uk/

SoC conference 2008:
http://www.abdn.ac.uk/cartographers08/ 

  _  

From: talk-boun...@openstreetmap.org
[mailto:talk-boun...@openstreetmap.org] On Behalf Of Nathan Mixter
Sent: 17 December 2008 05:50
To: openstreetmap
Subject: [OSM-talk] buildings and roads

 

Just wondering. Shouldn't buildings be rendered behind roads. Currently
buildings are drawn above a road when the road is wide like a highway or
major road. Obviously buildings don't cut into roads. If the road layer
is on top this won't happen.

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Buildings and roads

2008-12-18 Thread Iván Sánchez Ortega

On Thu, December 18, 2008 07:27, maning sambale wrote:
> On Thu, Dec 18, 2008 at 2:14 PM, Nathan Mixter 
> wrote:
>> Wow, Naga City is full of buildings. How did they get so many? Are those
>> all building=yeses? Crazy.
>
> NAGA City GIS released their data in public domain.  We are still
> encouraging the City government do continue adding more data.

Well, there is still a lot of data to import (land use and boundaries
IIRC), but I was too lazy to program the conversion script to take into
account the OSM relationships needed to correctly tag the multipolygons
(polygons with holes). Ant I still don't know if they would be rendered
alright by both mapnik and or/p.

So many things in the back burner... :-(

Cheers,
-- 
Iván Sánchez Ortega 

Un ordenador no es un televisor ni un microondas, es una herramienta
compleja.

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Buildings and roads

2008-12-17 Thread maning sambale
On Thu, Dec 18, 2008 at 2:14 PM, Nathan Mixter  wrote:
> Wow, Naga City is full of buildings. How did they get so many? Are those all
> building=yeses? Crazy.

NAGA City GIS released their data in public domain.  We are still
encouraging the City government do continue adding more data.


>
> A "major road" doesn't have to be wide by default. I hereby invite you to
> visit Guadarrama, where a trunk road (the "N-VI") has only two lanes, and
> buildings are just one meter away from the asphalt.
>
>
>
> Yes, I agree that the rendering is messed up at low zoom levels (see Naga
> City in the Phillipines), but at higher zoom levels, I see no other easy
> solution.
>
>
>
> (In a perfect world, a road would be not a line, but a polygon, so the width
> and area could be perfectly known).
>
>
>
>
>
> Cheers,
>
> --
>
> Iván Sánchez Ortega 
>
>
>
> Un ordenador no es un televisor ni un microondas, es una herramienta
> compleja.
>
>
>
> ___
> talk mailing list
> talk@openstreetmap.org
> http://lists.openstreetmap.org/listinfo/talk
>
>



-- 
cheers,
maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
--
___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


[OSM-talk] Buildings and roads

2008-12-17 Thread Nathan Mixter



Wow, Naga City is full of buildings. How did they get so many? Are those all 
building=yeses? Crazy. And I thought adding all the industrial and commercial 
buildings was bad. Anyway I still think that if the building layers were set at 
a lower layer level by default and the roads to a higher, it might look better.


On Wed, December 17, 2008 06:49, Nathan Mixter wrote:

> Just wondering. Shouldn't buildings be rendered
behind roads. 

> Currently buildings are drawn above a road when the
road is wide like 

> a highway or major road. Obviously buildings don't
cut into roads. If 

> the road layer is on top this won't happen.

 

A "major road" doesn't have to be wide by
default. I hereby invite you to visit Guadarrama, where a trunk road (the
"N-VI") has only two lanes, and buildings are just one meter away
from the asphalt.

 

Yes, I agree that the rendering is messed up at low zoom
levels (see Naga City in the Phillipines), but at higher zoom levels, I see no
other easy solution.

 

(In a perfect world, a road would be not a line, but a
polygon, so the width and area could be perfectly known).

 

 

Cheers,

--

Iván Sánchez Ortega 

 

Un ordenador no es un televisor ni un microondas, es una
herramienta compleja.

 

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-17 Thread Iván Sánchez Ortega

On Wed, December 17, 2008 06:49, Nathan Mixter wrote:
> Just wondering. Shouldn't buildings be rendered behind roads. Currently
> buildings are drawn above a road when the road is wide like a highway or
> major road. Obviously buildings don't cut into roads. If the road layer is
> on top this won't happen.

A "major road" doesn't have to be wide by default. I hereby invite you to
visit Guadarrama, where a trunk road (the "N-VI") has only two lanes, and
buildings are just one meter away from the asphalt.

Yes, I agree that the rendering is messed up at low zoom levels (see Naga
City in the Phillipines), but at higher zoom levels, I see no other easy
solution.

(In a perfect world, a road would be not a line, but a polygon, so the
width and area could be perfectly known).


Cheers,
-- 
Iván Sánchez Ortega 

Un ordenador no es un televisor ni un microondas, es una herramienta
compleja.

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] buildings and roads

2008-12-16 Thread Kenneth Gonsalves
On Wednesday 17 Dec 2008 11:19:44 am Nathan Mixter wrote:
> Just wondering. Shouldn't buildings be rendered behind roads. Currently
> buildings are drawn above a road when the road is wide like a highway or
> major road. Obviously buildings don't cut into roads. If the road layer is
> on top this won't happen.

could you explain with an illustration? I don't understand. I draw buildings 
next to roads

-- 
regards
Kenneth Gonsalves
Associate
NRC-FOSS
http://nrcfosshelpline.in/web/

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


[OSM-talk] buildings and roads

2008-12-16 Thread Nathan Mixter

Just wondering. Shouldn't buildings be rendered behind roads. Currently 
buildings are drawn above a road when the road is wide like a highway or major 
road. Obviously buildings don't cut into roads. If the road layer is on top 
this won't happen.
___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk