Re: [OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread John Smith
2009/10/15 Dane Springmeyer :
> John,
>
> Can you explain more what you doing via PHP?
>
> An error like 'XML document not well formed' is coming out of Mapnik proper
> not Nik2img.

I think the problem may be due to loss of privileges in PHP, on the
command line I run the same command:

/usr/bin/nik2img.py /var/lib/mod_tile/osm.xml --srs 900913 -d 512 512
--pipe --bbox 112 -45 154 -10 > /tmp/test.png

Works when run as root, doesn't when apache drops privileges and I
figured this out now when I tried to run the same command that as the
same user apache runs as.

I think I'll need to write a simple daemon and then pipe to it over a
local socket, if someone hasn't written one already that is.

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Re: [OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread Dane Springmeyer
John,

Can you explain more what you doing via PHP?

An error like 'XML document not well formed' is coming out of Mapnik  
proper not Nik2img.

Dane

On Oct 14, 2009, at 3:48 PM, John Smith wrote:

> 2009/10/15 Frederik Ramm :
>> Hi,
>>
>> Peter Körner wrote:
>>> I'm writing on a simple Frontend for the mapnik-toolchain.  
>>> Currently you
>>> can call it like this:
>>
>> Are you aware of the "nik2img" tool which does pretty much everything
>> you write here - including specifying the zoom level?
>>
>> http://code.google.com/p/mapnik-utils/wiki/Nik2Img
>
> Is there an easy way to have this run on demand via a webscript, I've
> tried to call it via php and keep getting:
>
> Step: 4 // --> Loaded XML from string
> XML document not well formed
>
> It works fine if I run it from the command line, and the php script
> can read the xml/mapnik style sheet file I'm telling nik2img to use.
>
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Re: [josm-dev] make slippy map a core feature (now #3717)

2009-10-14 Thread Sebastian Klein
Let's move the bug tracking discussion to trac:

https://josm.openstreetmap.de/ticket/3717

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Re: [OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread John Smith
2009/10/15 Frederik Ramm :
> Hi,
>
> Peter Körner wrote:
>> I'm writing on a simple Frontend for the mapnik-toolchain. Currently you
>> can call it like this:
>
> Are you aware of the "nik2img" tool which does pretty much everything
> you write here - including specifying the zoom level?
>
> http://code.google.com/p/mapnik-utils/wiki/Nik2Img

Is there an easy way to have this run on demand via a webscript, I've
tried to call it via php and keep getting:

Step: 4 // --> Loaded XML from string
XML document not well formed

It works fine if I run it from the command line, and the php script
can read the xml/mapnik style sheet file I'm telling nik2img to use.

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Re: [OSM-dev] OSM website & Potlatch translation

2009-10-14 Thread Ævar Arnfjörð Bjarmason
On Wed, Oct 14, 2009 at 9:56 PM, Marjan Vrban  wrote:
> I've translated OSM website & Potlatch (translatewiki) in Croatian language
> few days ago, and i can see only small part is "active" (sown in cro lang
> on site). When will complete translation be available for using?

Hi & thanks for your efforts.

Translations get commited periodically, usually every day or so. After
that happens they appear on the live site whenever TomH does another
sync. which is usually every 1-2 days or so.

However the Translatewiki sync last happened last Saturday. I don't
know why there hasn't been another update more recently. CC-ing it to
the Translatewiki guys so they can chime in.

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[OSM-dev] OSM website & Potlatch translation

2009-10-14 Thread Marjan Vrban
I've translated OSM website & Potlatch (translatewiki) in Croatian language
few days ago, and i can see only small part is "active" (sown in cro lang
on site). When will complete translation be available for using?


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Re: [OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread Frederik Ramm
Hi,

Peter Körner wrote:
> I'm writing on a simple Frontend for the mapnik-toolchain. Currently you 
> can call it like this:

Are you aware of the "nik2img" tool which does pretty much everything 
you write here - including specifying the zoom level?

http://code.google.com/p/mapnik-utils/wiki/Nik2Img

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frede...@remote.org  ##  N49°00'09" E008°23'33"

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Re: [OSM-dev] Distributing a VirtualBox HD-File

2009-10-14 Thread Peter Körner
Hi Ian

> Peter, I can mirror/host it on my shared server account. I've got 
> "unlimited" bandwidth and they seem to be pretty good about allowing 
> large file downloads.
Of course I'm interested!

Next steps will be:
1. complete last tasks
2. make a torrent of it and publish it on osm-talk (soft-opening for 
technicians to filter out bugs)
3. completion of documentation & tutorials for the wiki
4. release -> this is when i'll come back to your offer

Peter

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Re: [OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread Peter Körner
Hi Andrew

> http://svn.openstreetmap.org/applications/rendering/mapnik/zoom-to-scale.txt 
> http://www.britishideas.com/2009/09/22/map-scales-and-printing-with-mapnik/
Thank you very much!

Peter

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Re: [OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread Andrew Ayre
Hi Peter,

This document:

http://svn.openstreetmap.org/applications/rendering/mapnik/zoom-to-scale.txt

shows the relationship of zoom level to scale denominator.

This blog post:

http://www.britishideas.com/2009/09/22/map-scales-and-printing-with-mapnik/

shows how to get from bounding box to scale denominator and vice versa.

Andy

Peter Körner wrote:
> Hello
> 
> I'm writing on a simple Frontend for the mapnik-toolchain. Currently you 
> can call it like this:
> 
> osm-render --bbox 8.2011,49.9649,8.3278,50.0327 --size 8192x4096
> 
> I'd like to add another option like this:
> 
> osm-render --bbox 8.2011,49.9649,8.3278,50.0327 --zoom 14
> 
> The combination of bbox-size (in lat/lon or maybe kilometers?) and 
> output-size (in pixels) somehow leads to the ScaleDenominator used in 
> the mapnik style, so i think it could be calculated to a zoomlevel and 
> vice versa.
> 
> Does anyone has a formular for that (especially bbox & zoom --> width & 
> height) or is this just not possible?
> 
> Thank you,
> Peter
> 
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> 

-- 
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PGP Key ID: 0xDC1B5864

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[OSM-dev] Distributing a VirtualBox HD-File

2009-10-14 Thread Peter Körner
Hi

I'm nearly done putting together my Rendering Stack. It makes the 
complete chain from the osm (x)api to the final map accessible via very 
easy commands:

  osm-load --bbox 8.2011,49.9649,8.3278,50.0327
  osm-render --bbox 8.2011,49.9649,8.3278,50.0327

without loosing too much possibilities:

  osm-load --bbox 8.2011,49.9649,8.3278,50.0327 --custom-api \
   http://api06.dev.openstreetmap.org/api/0.6/map?bbox=%s
  osm-load --bbox 8.2011,49.9649,8.3278,50.0327 --file germany.osm.bz2

  osm-render --bbox 8.2011,49.9649,8.3278,50.0327 --type pdf \
   --file mainz --size 8192x4096
  osm-render --bbox 8.2011,49.9649,8.3278,50.0327 --type png \
   --size 16384x8192 --style styles/thinline.xml

Atm I'm still writing the documentation, usage guides for windows and 
linux (mac could/will maybe be added later) so that this set of tools 
will hopefully be usable by not-technicians, e.g. by designers that wish 
to make maps for printing.

The complete system, from a mapnik svn build via postgresql to the 
osm-mpnik-stylesheet is packed into a VirtualBox Harddisk image of
~3.2 GB. Maybe this could be reduced but I don't think it will get below
3 GB. So now I'm unsure how to distribute it.

For the first run I'm going to make a Torrent from it and distribute it 
via my local 6 MBit DSL line, but this is not the best solution for 
not-technicians. A HTTP or FTP Download-Link would be better. Any one 
any idea?

Peter

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[OSM-dev] Mapnik rendering: Zoom-Level to Width/Height

2009-10-14 Thread Peter Körner
Hello

I'm writing on a simple Frontend for the mapnik-toolchain. Currently you 
can call it like this:

osm-render --bbox 8.2011,49.9649,8.3278,50.0327 --size 8192x4096

I'd like to add another option like this:

osm-render --bbox 8.2011,49.9649,8.3278,50.0327 --zoom 14

The combination of bbox-size (in lat/lon or maybe kilometers?) and 
output-size (in pixels) somehow leads to the ScaleDenominator used in 
the mapnik style, so i think it could be calculated to a zoomlevel and 
vice versa.

Does anyone has a formular for that (especially bbox & zoom --> width & 
height) or is this just not possible?

Thank you,
Peter

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Re: [OSM-dev] 3d Import into OpenArena working

2009-10-14 Thread Peter Körner


Nick Whitelegg schrieb:
>> I don't think, it have to introduce a web dependency. It is just a java 
> script application running inside a >browser. The script don't have to be 
> on a website. It can also be a local file. The map data can also be local 
>> files - maybe. 
> 
> That's the issue, that JS cannot normally read local files - for security 
> reasons. You'd have to make at least one request to the server, as far as 
> I'm aware - though the data could then be cached locally for next time.

You could embed the data into the HTML-Page amd ship it for offline use.

Peter

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Re: [OSM-dev] OpenstreetMap Trace Analysys

2009-10-14 Thread John Smith
2009/10/14 John Robert Peterson :
> if it's just the highways you want -- the data could easilly be filtered on
> velocity -- include only the stuff thats >30mph. (i've done this in the
> past, and it's a bit of a pain to do, but it's simple once you have it set
> up)
>
> in that case, all the superfulus stuff, as well as camp sites, tracks,
> walking paths, and other stuff with go almost completly. the only bad data
> left will be where there is a large jump in the data while stationary due to
> gps confusion, this should be rare enough that it won't be an issue. adding
> a HDOP filter of 4 should solve most of it.
>
> it all depends on how twitchy the doners are -- if they are paranoid about
> anyone finding out anything, the data is totally unusable as even vauge
> direction of travel gives some hints about the camp site locations. -- if
> they just don't want "wide publicity" of all the locations, you are good to
> upload the data raw. I suspect the answer is somewhere in the middle.
>
> I'd be happy to help with filting the data if you like.

Do you have any scripts already?

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Re: [OSM-dev] OpenstreetMap Trace Analysys

2009-10-14 Thread John Robert Peterson
if it's just the highways you want -- the data could easilly be filtered on
velocity -- include only the stuff thats >30mph. (i've done this in the
past, and it's a bit of a pain to do, but it's simple once you have it set
up)

in that case, all the superfulus stuff, as well as camp sites, tracks,
walking paths, and other stuff with go almost completly. the only bad data
left will be where there is a large jump in the data while stationary due to
gps confusion, this should be rare enough that it won't be an issue. adding
a HDOP filter of 4 should solve most of it.

it all depends on how twitchy the doners are -- if they are paranoid about
anyone finding out anything, the data is totally unusable as even vauge
direction of travel gives some hints about the camp site locations. -- if
they just don't want "wide publicity" of all the locations, you are good to
upload the data raw. I suspect the answer is somewhere in the middle.

I'd be happy to help with filting the data if you like.

JR

2009/10/14 John Smith 

> 2009/10/14 Richard Weait :
> > Perhaps you will decide that the tracks are not worth contributing.
>
> They were worth contributing, there was large sections of highways not
> previously mapped.
>
> > Your donor could do this and edit OSM as well.  He'll have context
> > from his direct experience that nobody else might be able to extract
> > from his track files.  Importing data is cool.  Creating new mappers
> > is better.
>
> Just because they can drive around with a GPS that logs doesn't mean
> they are capable or willing to do anything else. I've already
> vectorised most of the data that hasn't previously been uploaded to
> OSM so that side of things is done, it's just the limiations on what I
> can do with the GPX files that is the issue.
>
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Re: [OSM-dev] 3d Import into OpenArena working

2009-10-14 Thread Nick Whitelegg
>I don't think, it have to introduce a web dependency. It is just a java 
script application running inside a >browser. The script don't have to be 
on a website. It can also be a local file. The map data can also be local 
>files - maybe. 

That's the issue, that JS cannot normally read local files - for security 
reasons. You'd have to make at least one request to the server, as far as 
I'm aware - though the data could then be cached locally for next time.

Nick

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Re: [OSM-dev] 3d Import into OpenArena working

2009-10-14 Thread Nick Whitelegg
>> WebGL looks interesting, and am thinking of having a play with it. The
>> main issue I see is it introduces a web dependency; if you're in the 
field
>> and you don't have web access (or don't want to pay for data download) 
a
>> standalone mobile application would be useful too. But I agree, it does
>> look very interesting.

>Yes, I did not even get to run that, it needed some plugin.
>My entire focus is on FLOSS software. I would like to be able to use
>an entirely free software stack and tools and avoid API for apis sake.
>Why need an API when we have the software?
>mike

If you're talking about WebGL, I believe that requires a nightly build of 
Firefox or WebKit (i.e. the development version) to run. I believe 
everything we're talking about in this discussion is FLOSS software anyway 
;-)

Nick


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