Re: [OSM-talk] Beyond Zoom 18 - (Some scratchspacing ideas concerning siteplans)

2008-04-22 Thread elvin ibbotson




As an architect I spend a lot of time using mapping 'beyond zoom 18'  
and have contributed a lot of stealth taxes to the British government  
paying through the nose for Ordnance Survey site plans (another  
debate altogether). Accurate data for building footprints (we'd best  
keep out of people's living rooms to avoid privacy issues) would be  
great but is beyond the capabilities of the techniques generally used  
by OSM mappers - hobby GPS devices and tracing from Yahoo imagery.  
Either a professional surveying-quality GPS rig would be needed,  
giving centimetre accuracy, or the data would have to be imported  
from CAD, with some method of accurately relating this to OSM's  
coordinate system. Bigger servers might be needed too :-)




From: Frederik Ramm [EMAIL PROTECTED]
Date: 22 April 2008 00:44:59 BDT
To: Sfan00 [EMAIL PROTECTED]
Cc: talk@openstreetmap.org
Subject: Re: [OSM-talk] Beyond Zoom 18 - (Some scratchspacing ideas	 
concerning siteplans)



Hi,


What exists are the start of some example floorplans for :
* A supermarket
* A Cinema seating arrangment
* A simple  house...

I would welcome some thoughts on what to expand...


Micromapping is surely an interesting area that we'll have to spend
some thought on; if and how we want it in our data, how this can work
with generalisation (zooming out) and so on.

However I have a feeling that our current approach of mapping what's
there will fail miserably when we try to create schematics of the
insides of railway stations or cinemas. Such floor plans are usually
not even remotely drawn to scale, often for good reasons. But our way
of doing things does not leave room for *not* drawing something to
scale. So maybe we just end up with links to some other system
(OpenFloorPlans)...?



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Re: [OSM-talk] Beyond Zoom 18 - (Some scratchspacing ideas concerning siteplans)

2008-04-22 Thread Robert (Jamie) Munro
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Iván Sánchez Ortega wrote:
| El Martes, 22 de Abril de 2008, Tom Hughes escribió:
| [...]
| This has been discussed inumerable times before and the consensus has
| been very clear that we should not use any part of the globe, no matter
| how remote, as some sort of test area or scratchpad.
|
| If anybody wants to experiment, instructions on how to set up a rails
server
| are on SVN and on the wiki, anyway. I'm with Tom here, on not
polluting the
| main OSM database.

This is why we need a test server. http://dev.openstreetmap.org/ should
lead to a near-identical looking site to the main site, but where this
kind of scratchpad testing, etc. is explcitly allowed. The database
behind this site should be overwritten with the real database
periodically. The site would also be the place where new versions of the
site and Potlatch can be tried and tested.

Robert (Jamie) Munro
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Re: [OSM-talk] Beyond Zoom 18 - (Some scratchspacing ideas concerning siteplans)

2008-04-22 Thread Sebastian Spaeth
Tom Hughes wrote:

  [snip]
if ($email=~/should/ and $email !~ /I will make it so/) then
   {print work harder unpaid slaves!}

 Well the dev server is over that way if somebody wants to volunteer to
 setup and run such a service. I'm sure Spaetz will oblige with an
 account on dev if required.

Yes, I will happily hand out accounts for anybody willing to implement 
that. :-)

Spaetz

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[OSM-talk] Beyond Zoom 18 - (Some scratchspacing ideas concerning siteplans)

2008-04-21 Thread Sfan00
Hi,

In connection with something that was raised in #osm, I did some 
scratchpading here:
http://www.openstreetmap.org/edit?lat=74.28624lon=1.138034zoom=18

(NOTE : I made sure that this wasn't actually anywhere important... it 
appeared to be an area of ocean being in the middle of the Atlantic on OSM)

I was wondering what peoples thoughts were.
(these sketchs are NOT accurate, to scale - they are just some thoughts)

What exists are the start of some example floorplans for :
* A supermarket
* A Cinema seating arrangment
* A simple  house...

I would welcome some thoughts on what to expand...

On a related note, I would like to make a strong request for thier to be 
'scratch' tiles in the OSM
system, so that experimental ideas can be trialled without affecting the 
main map,database etc...















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Re: [OSM-talk] Beyond Zoom 18 - (Some scratchspacing ideas concerning siteplans)

2008-04-21 Thread Tom Hughes
In message [EMAIL PROTECTED]
  Sfan00 [EMAIL PROTECTED] wrote:

 In connection with something that was raised in #osm, I did some
 scratchpading here:
 http://www.openstreetmap.org/edit?lat=74.28624lon=1.138034zoom=18
 
 (NOTE : I made sure that this wasn't actually anywhere important... it
 appeared to be an area of ocean being in the middle of the Atlantic on OSM)

Everywhere is important. If it's an ocean it should look like an ocean.

This has been discussed inumerable times before and the consensus has
been very clear that we should not use any part of the globe, no matter
how remote, as some sort of test area or scratchpad.

 I was wondering what peoples thoughts were.
 (these sketchs are NOT accurate, to scale - they are just some thoughts)
 
 What exists are the start of some example floorplans for :
 * A supermarket
 * A Cinema seating arrangment
 * A simple  house...
 
 I would welcome some thoughts on what to expand...

Why don't we just stick to mapping sensible things before we start
worrying about mapping the insides of peoples houses!

 On a related note, I would like to make a strong request for thier to be
 'scratch' tiles in the OSM
 system, so that experimental ideas can be trialled without affecting the
 main map,database etc...

Our database covers the globe - where exactly do you propose we put
this scratch area? Do you propose to extend the normal spherical
coordinate system to have more than 360 degrees along some axis?

Tiles do not exist as an entity in the database that we can magically
allow you to write to - they are just an artefact of cutting the globe
(or rather a projection of the globe) into pieces for rendering.

Tom

-- 
Tom Hughes ([EMAIL PROTECTED])
http://www.compton.nu/

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