[OSM-talk] JOSM upload failure

2008-01-03 Thread Stephen Hope
I was uploading a big section of data when I had an connection failure
of some kind, and the upload eventually timed out. It had uploaded a
lot of nodes, but hadn't got as far as the ways yet.

Can I assume that if I just try and upload the same data again (I have
it saved) that it won't duplicate the nodes that uploaded last time?
Is there some rule that says you can't have two nodes in the same
place?

Stephen Hope

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[OSM-talk] Osmxapi is up

2008-01-03 Thread 80n
After a long seasonal break Osmxapi is now up and running again.

The server it was running on (hypercube.telascience.org) lost its disk on 19
December.  Which also happened to be the day I went on vacation.  When the
disk was restored Osmxapi wouldn't restart because it needed a database
check.  So it stayed down until I returned from vacation.

By the time I returned the hourly diff files had been purged up to December
25 meaning Osmxapi would not have changes for the period 19-25 December.  So
I started a rebuild from planet.osm.  Planet is now large enough that it
takes several days to do a complete rebuild.  However, since Brett had also
fixed the UTF-8 bug in the Osmosis hourly diffs it was also worth doing the
rebuild to get rid of all those UTF-8 problems that had been introduced.

So now we have a fresh clean Osmxapi database with no UTF-8 problems (I
hope).

Enjoy
80n
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Re: [OSM-talk] more votes requested - man_made=sub_station

2008-01-03 Thread Robin Paulson
On 04/01/2008, Brent Easton <[EMAIL PROTECTED]> wrote:
> You don't need any more votes. If there are no negative votes, then 6 Yes's 
> is enough to approve it.
>

it is? oh, i thought it was 10. 6 seems awfully low

thanks though, wil move it across to approved

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Re: [OSM-talk] more votes requested - man_made=sub_station

2008-01-03 Thread Brent Easton
You don't need any more votes. If there are no negative votes, then 6 Yes's is 
enough to approve it.

Brent.

*** REPLY SEPARATOR  ***

On 4/01/2008 at 11:54 AM Robin Paulson  wrote:

>this has been open for voting for 2 weeks now
>
>http://wiki.openstreetmap.org/index.php/Proposed_features/sub_station
>
>it currently has 9 yes votes and 0 no votes. could i get some more, to
>either approve or reject it?
>
>thanks
>
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Brent Easton   
Analyst/Programmer   
University of Western Sydney   
Email: [EMAIL PROTECTED]


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[OSM-talk] RFC - tourism=chalets

2008-01-03 Thread Robin Paulson
i've tidied up this proposal, it's been dormant for several months now

http://wiki.openstreetmap.org/index.php/Proposed_features/chalets

could i get some comments please, i would like to open voting soon to
move it off the proposals page

thanks

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[OSM-talk] more information needed - tourism=rest_camp

2008-01-03 Thread Robin Paulson
could the person who proposed:

http://wiki.openstreetmap.org/index.php/Proposed_features/Rest_Camp

please provide some more information on the proposal?

it is unclear what it is actually for, beyond duplicating a range of other tags

failing that, could it be removed from the proposals page

thanks

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[OSM-talk] RFC - sport=model_aerodrome

2008-01-03 Thread Robin Paulson
this proposal has been open for two months now. i've tidied it up;
could we get some comments, with a view to opening voting soon

http://wiki.openstreetmap.org/index.php/Proposed_features/Model%27s_Aerodrome

thanks

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[OSM-talk] new proposal - military=naval_base

2008-01-03 Thread Robin Paulson
there is a new proposal on the wiki

http://wiki.openstreetmap.org/index.php/Proposed_features/naval_base

could i get some opinions and comments please

thanks

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[OSM-talk] removel of duplicate proposal - roundend and RFC - turning_circle

2008-01-03 Thread Robin Paulson
this proposal is a duplication of another proposal

http://wiki.openstreetmap.org/index.php/Proposed_features/RoundEnd

before creating proposals, please check to make sure it does not
already exist, either as a proposal or as an approved feature

it has been removed from the proposed features page, please direct all
comments to the identical proposal, which pre-dates it by some months:

http://wiki.openstreetmap.org/index.php/Proposed_features/Turning_circle

this has laid dormant for some months now, so could i get some comments please

thanks

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[OSM-talk] rfc - power=

2008-01-03 Thread Robin Paulson
there are various keys under the man_made tag which represent power
stations. there is a  proposal under way to deprecate these and
replace them with one tag, under the 'power' top-level tag

http://wiki.openstreetmap.org/index.php/Proposed_features/Power_plants

comments please

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[OSM-talk] rfc - tourism=gallery

2008-01-03 Thread Robin Paulson
this has been a proposal for 5 months now

http://wiki.openstreetmap.org/index.php/Proposed_features/Art_gallery

i've changed it form attraction to tourism, as the attraction
top-level tag does not exist yet

could i get some comments please

thanks

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[OSM-talk] rfc - man_made=well

2008-01-03 Thread Robin Paulson
this has been a proposal for 2 months now, with very few comments

http://wiki.openstreetmap.org/index.php/Proposed_features/Well_Water

i've tidied up the proposal, could i get some comments please

thanks

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[OSM-talk] redundant proposal? - man_made=fenced_compounds

2008-01-03 Thread Robin Paulson
in my quest to tidy the proposals page on the wiki, some proposals
have come up which appear to be redundant

is there an acknowledged way of removing them, without going through
the whole comments/opinions/voting process?

http://wiki.openstreetmap.org/index.php/Proposed_features/Fenced_compounds

is a good example

thanks

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[OSM-talk] rfc - man_made=city_wall

2008-01-03 Thread Robin Paulson
this proposal has been up for 9 months now

http://wiki.openstreetmap.org/index.php/Proposed_features/City_wall

could i get some more comments please

thanks

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[OSM-talk] new proposal accepted - man_made=pipeline

2008-01-03 Thread Robin Paulson
the voting period has now ended for this proposal, it has passed with
10 yes votes and 0 no votes

http://wiki.openstreetmap.org/index.php/Proposed_features/Pipeline

it has been added to the map features and approved features pages

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[OSM-talk] more votes requested - man_made=sub_station

2008-01-03 Thread Robin Paulson
this has been open for voting for 2 weeks now

http://wiki.openstreetmap.org/index.php/Proposed_features/sub_station

it currently has 9 yes votes and 0 no votes. could i get some more, to
either approve or reject it?

thanks

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[OSM-talk] voting open landuse=port

2008-01-03 Thread Robin Paulson
this has been open for discussion for two weeks now, with no
unanswered objections

http://wiki.openstreetmap.org/index.php/Proposed_features/Port

voting is now open, for two weeks

thanks

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[OSM-talk] voting open natural=saltmarsh

2008-01-03 Thread Robin Paulson
this has been open for comments for three months now, with no objections

http://wiki.openstreetmap.org/index.php/Proposed_features/Saltmarsh

voting is now open, for two weeks

thanks

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Re: [OSM-talk] GpsWeather: When conditions for mapping are good

2008-01-03 Thread ivom
The Trimble software looks promising. Maybe it is also useful to plan 
ahead for mapping parties. Or on the spot, to estimate if it would be a 
good idea to come back 2 hours later to map under much better conditions.

It also installs under Linux with Wine. Just great!

Regards,
IvoM

On Thu, 3 Jan 2008, Andy Robinson (blackadder) wrote:

> It's worth bearing in mind that all the manufacturers of commercial survey
> grade gps products maintain sat availability services. Most of these operate
> via a paid service or purchased software, however Trimble produce a useful
> free tool called "Planning" that I use when I really need to know how good
> its going to be out there.
>
> http://www.trimble.com/planningsoftware_ts.asp
>
> Cheers
>
> Andy


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[OSM-talk] autmatically installing smaller planet files into mapnik

2008-01-03 Thread Joerg Ostertag (OSM Munich/Germany)
I just added an option to the mapnik-osm-updater.sh to enable you to install 
one of the small planet excerpts from Freds Geofabrik page ...

mapnik-osm-updater.sh --all-planet-geofabrik=europe/germany/baden-wuerttemberg

To get a list of alll available ... use:
mapnik-osm-updater.sh --all-planet-geofabrik=?

This way it should be much easier to install/test/play with a local mapnik 
installation.

-- 
Jörg (Germany, Munich)

http://www.ostertag.name/
irc://irc.oftc.net/#osm
Tel.: +49 89 420950304
Skype: JoergOstertag

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Re: [OSM-talk] OSM meetup during Linux.Conf.Au 2008

2008-01-03 Thread Stephen Coast
Maybe try and do a lightning talk or something if you can?

On 2 Jan 2008, at 21:41, Kim Hawtin wrote:

> Hi guys,
>
> I was wondering if there would be any value for folks to organise a
> meet up during the Linux Conference in Melbourne starting on the 28th
> of January?
>
> regards,
>
> Kim
> -- 
> Community Wireless Miniconf Coordinator
>  http://miniconf.mel8ourne.org/wiki/index.php?title=Community_Wireless
> Linux.Conf.Au 2008
>  http://linux.conf.au/
>
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have fun,

SteveC | [EMAIL PROTECTED] | http://www.asklater.com/steve/



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Re: [OSM-talk] [OSM-dev] curves

2008-01-03 Thread Richard Fairhurst
(suggest follow-ups to dev only)

Artem Pavlenko wrote:

> Perhaps, not well know fact but Mapnik can render bezier curves. The
> reason it is not being used is the lack of support for curves in
> common GEO formats.

Now that really _does_ have promise for slimming down SRTM filesizes.

My workflow for SRTM is GeoTIFF->DEM2TOPO->Polish format->Perl  
script->Illustrator->simplify to beziers... which produces nice  
manageable files. Clearly those particular tools wouldn't be much use  
for OSM, but the principle remains.

cheers
Richard


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Re: [OSM-talk] [Mapnik-devel] curves

2008-01-03 Thread Martijn van Oosterhout
On Jan 3, 2008 4:16 PM, Artem Pavlenko <[EMAIL PROTECTED]> wrote:
> P.S. Are there some hints (tags) in OSM that can be used for to
> smooth or not?
> Also, are there are examples where it does work well and where it
> doesn't?

AFAIK there are no explicit hints, but there is code in osmarender to
do bezier curves. There there is a lot of fudging to make it look
good, but it's there. The main problem being that angles of 90 degrees
or greater should possibly not be rounded. I think we can pretty
safely turn it on for roads and river boundaries/coastlines. Though
the parts that represent piers need to be exempted somehow.

Have a nice day,
-- 
Martijn van Oosterhout <[EMAIL PROTECTED]> http://svana.org/kleptog/

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[OSM-talk] curves

2008-01-03 Thread Artem Pavlenko
Hello,

Perhaps, not well know fact but Mapnik can render bezier curves. The  
reason it is not being used is the lack of support for curves in  
common GEO formats.
I'm adding support for on-fly 'smooth' polygons/lines , which can be  
controlled by providing smooth parameter (0.0 - 2.0)  i.e:

  
   [natural] = 'lake' or [natural] = 'water'
   500
   
 &water_color;
1.0
  
 

It is very fast and you can see the result : http:// 
artem.dev.openstreetmap.org/files/smooth_1.0.png
(note that text following curve as well)

I know tah has been using bezier curves by pre-processing geometries  
for while.

What people think about explicitly supporting curves as a part of  
geometry model? This way we can model the world better.

Thoughts?

Artem

P.S. Are there some hints (tags) in OSM that can be used for to  
smooth or not?
Also, are there are examples where it does work well and where it  
doesn't?




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Re: [OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Frederik Ramm
Hi,

> Nice slides, and one of my picture too.

I had to resist the urge of putting in a SteveC portrait with a big  
fat "It's all his fault" arrow ;-)

Bye
Frederik

-- 
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Re: [OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Richard Fairhurst
Frederik Ramm wrote:

> It i s going to be a "real" book, German Language, about 300 pages, and
> aims to have everything the would-be mapper needs to get going, as well
> as an overview about the technical background of the project (i.e. data
> model, XML, and stuff). We assume it is going to hit the market some
> time in February.

Sounds brilliant.



cheers
Richard


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Re: [OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Frederik Ramm
Hi,

>> Buy our book (out February 2008) Frederik Ramm, Jochen Topf:
>> OpenStreetMap Lehmanns Verlag, Hamburg
>
> So tell us more...?

Well... I finished the chapter on routing yesterday, and an hour  
later heard that Roadmap now has OSM support as well so I'll have to  
include that - and that's pretty much symptomatic of everything we  
did for the book. The Potlatch chapter needs some minor corrections  
as well... ;-) it is quite difficult to portray something as fast- 
moving as OSM but I think we just about got it right. Many  
fundamentals are still the same as when I joined a year ago.

It i s going to be a "real" book, German Language, about 300 pages,  
and aims to have everything the would-be mapper needs to get going,  
as well as an overview about the technical background of the project  
(i.e. data model, XML, and stuff). We assume it is going to hit the  
market some time in February.

Bye
Frederik

-- 
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Re: [OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Stephen Coast

On 3 Jan 2008, at 12:10, Richard Fairhurst wrote:

> Frederik Ramm wrote:
>
>> My slides are in SVN (/misc/lectures/), in OpenOffice and PDF
>> formats, and of course you're welcome to re-use them in any way.
>
> Haven't listened to the transcript, but the slides are great - really
> convey the sense of OSM being useful, cool, and fun.
>
>> Buy our book (out February 2008) Frederik Ramm, Jochen Topf:
>> OpenStreetMap Lehmanns Verlag, Hamburg
>
> So tell us more...?

Maybe with an introduction by Fake SteveC?

Nice slides, and one of my picture too.

>
>
> cheers
> Richard
>
>
>
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have fun,

SteveC | [EMAIL PROTECTED] | http://www.asklater.com/steve/



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Re: [OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Michael Collinson
At 12:57 PM 1/3/2008, Frederik Ramm wrote:
>The talk went ok, I got a lot of follow-up questions and believe I
>have recruited a number of soon-to-be addicts. The room was quite
>full even though in the auditorium next door they had the "Sex 2.0"
>talk which was announced as being about achieving a fulfilled sex
>life with the help of online dating platforms.
>
>This means that people interested in OSM either have a good sex life
>already or, uh, never mind.

Or OSM is better than sex. :-)





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Re: [OSM-talk] GpsWeather: When conditions for mapping are good

2008-01-03 Thread Andy Robinson (blackadder)
Mike Collinson wrote:
>Sent: 02 January 2008 9:54 PM
>To: talk@openstreetmap.org
>Subject: Re: [OSM-talk] GpsWeather: When conditions for mapping are good
>
>At 10:11 PM 2/01/2008, ivom wrote:
>>Folks!
>>
>>>From time to time, I am suffering from the limited reception capabilities
>>of my Garmin Etrex Venture Cx. I guess this is a recognizable state of
>>being, during a mapping session in urban canyons, walking around with an
>>accuracy of 17 meters or more...
>>
>>I am looking for some sort of indication telling me, at which time-of-day
>>there would be excellent conditions for creating tracks in a dense city
>>area. Has anybody come about such a service on the web yet?
>>
>>Currently I am not planning to upgrade on the hardware side, but do not
>>hesitate to suggest different makes, models or add-ons, which would suffer
>>less from this urban canyon problem.
>>
>>Kind regards,
>>IvoM
>
>IvoM,
>
>I think what you may be after is being able to predict date/times when a)
>there is a good number of satellites in the sky around you so that your GPS
>device can get as many readings as possible and choose the best, b) the
>satellites are well distributed over the sky to help the mathematical
>calculation of the GPS device and so that they are not all blocked by a
>tall building at the same time.
>
>If so, try typing into Google: GPS Satellite predictor
>
>I came up with
>
>https://stellarsupport.deere.com/stellar/SatellitePredictor?language=en&cou
>ntry=US
>
>If I remember, http://sirius.chinalake.navy.mil/satpred/, is a good one,
>but it is dead when I just checked it.

Yeah, I used to use the Sirius link but that's dead now I think.

It's worth bearing in mind that all the manufacturers of commercial survey
grade gps products maintain sat availability services. Most of these operate
via a paid service or purchased software, however Trimble produce a useful
free tool called "Planning" that I use when I really need to know how good
its going to be out there.

http://www.trimble.com/planningsoftware_ts.asp

Cheers

Andy

>
>Unfortunately,  even that probably won't  help that much with urban
>canyoning - you'll probably have to do several runs and then tie it in with
>Yahoo imagery if you are lucky enough to have it for your area.  One tip,
>I've got my best results having my GPS device mounted in a bicycle saddle-
>bag - it provides a much more stable platform than walking.  And if you are
>walking and your device loses satellite connection, put it on a metal
>surface - a man-hole cover,  traffic-signal controllers, even large waste-
>paper bins. It seems to act as a ground-plane which improves the antenna
>gain.
>
>Mike
>Stockholm
>
>
>
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Re: [OSM-talk] implementation of relations in josm

2008-01-03 Thread Ben Laenen
On Thursday 03 January 2008, Frederik Ramm wrote:
> Hi,
>
> > Also the other problem with
> > splitting and merging of roads needs attention. Rather urgently I
> > would say.
>
> I agree. It is however again one of the problems where different
> relations will need different actions - when a way in a route
> relation is split, both new ways need to be members, but when a way
> in a turn restriction relation is split, only the one at the junction
> should be a member.
>
> Somehow I always thought that we should have a rather complex
> "presets" style configuration file for JOSM that tells it what to do
> with various kinds of relations but maybe a simple hack would be
> better than nothing for now; in the case of splitting ways perhaps
> just always ask the user what he wants.

And don't forget to flip forward/backward memberships in route-relations 
when changing the way direction :-p

Ben

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Re: [OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Richard Fairhurst
Frederik Ramm wrote:

> My slides are in SVN (/misc/lectures/), in OpenOffice and PDF
> formats, and of course you're welcome to re-use them in any way.

Haven't listened to the transcript, but the slides are great - really  
convey the sense of OSM being useful, cool, and fun.

> Buy our book (out February 2008) Frederik Ramm, Jochen Topf:  
> OpenStreetMap Lehmanns Verlag, Hamburg

So tell us more...?

cheers
Richard



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[OSM-talk] My Openstreetmap talk at 24C3

2008-01-03 Thread Frederik Ramm
Hi,

if anyone's interested, here is my OSM talk from the 24C3  
conference in Berlin:

http://outpost.h3q.com/fnord/24c3-torrents/24c3-2286-en- 
openstreetmap.mkv.torrent

The talk went ok, I got a lot of follow-up questions and believe I  
have recruited a number of soon-to-be addicts. The room was quite  
full even though in the auditorium next door they had the "Sex 2.0"  
talk which was announced as being about achieving a fulfilled sex  
life with the help of online dating platforms.

This means that people interested in OSM either have a good sex life  
already or, uh, never mind.

My slides are in SVN (/misc/lectures/), in OpenOffice and PDF  
formats, and of course you're welcome to re-use them in any way.

Bye
Frederik

-- 
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Re: [OSM-talk] implementation of relations in josm

2008-01-03 Thread Dave Stubbs
On 03/01/2008, bvh <[EMAIL PROTECTED]> wrote:
> On Thu, Jan 03, 2008 at 09:29:16AM +0100, Frederik Ramm wrote:
> > I agree. It is however again one of the problems where different
> > relations will need different actions - when a way in a route relation
> > is split, both new ways need to be members, but when a way in a turn
> > restriction relation is split, only the one at the junction should be
> > a member.
>
> Except if the way is a member with role "via" in which case both parts
> should be kept in the relation.
>
> > Somehow I always thought that we should have a rather complex
> > "presets" style configuration file for JOSM that tells it what to do
> > with various kinds of relations but maybe a simple hack would be
> > better than nothing for now; in the case of splitting ways perhaps
> > just always ask the user what he wants.
>
> Given how difficult specifying these kind of constraints can become,
> it might be better to just 'hardcode' it instead of inventing a
> specification format that is nearly going to be a complete programming
> language in itself?

Well, if they did get that complicated you could always script them --
ie: actually embed some python/javascript in the presets file. We had
a similar problem in an app I was developing at work, so I just used
Rhino with a small simple API exposed to the javascript context.

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Re: [OSM-talk] implementation of relations in josm

2008-01-03 Thread bvh
On Thu, Jan 03, 2008 at 09:29:16AM +0100, Frederik Ramm wrote:
> I agree. It is however again one of the problems where different
> relations will need different actions - when a way in a route relation
> is split, both new ways need to be members, but when a way in a turn
> restriction relation is split, only the one at the junction should be
> a member.

Except if the way is a member with role "via" in which case both parts
should be kept in the relation.

> Somehow I always thought that we should have a rather complex
> "presets" style configuration file for JOSM that tells it what to do
> with various kinds of relations but maybe a simple hack would be
> better than nothing for now; in the case of splitting ways perhaps
> just always ask the user what he wants.

Given how difficult specifying these kind of constraints can become,
it might be better to just 'hardcode' it instead of inventing a
specification format that is nearly going to be a complete programming
language in itself?

cu bart

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Re: [OSM-talk] Osmarender CC notice

2008-01-03 Thread Russ Phillips
On Thu, January 3, 2008 10:37 am, Jochen Topf wrote:

>> Can anyone tell me how to get Osmarender to add a CC licence notice and
>> (ideally) a scale bar?
>
> Look at the beginning of the rules file, for instance
> osm-map-features-z17.xml
>
> showScale="no"
> showGrid="no"
> showBorder="no"
> showLicense="no"
>
> Set the ones you need to "yes".

Thanks, I just found the details at
http://wiki.openstreetmap.org/index.php/Osmarender/Options

I guess I should have RTFM'd :-/

Russ



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Re: [OSM-talk] [josm-dev] implementation of relations in josm

2008-01-03 Thread Andy Robinson (blackadder)
Frederik Ramm wrote:
>Sent: 03 January 2008 8:29 AM
>To: Jo
>Cc: talk@openstreetmap.org; [EMAIL PROTECTED]
>Subject: Re: [josm-dev] [OSM-talk] implementation of relations in josm
>
>Hi,
>
>> Also the other problem with
>> splitting and merging of roads needs attention. Rather urgently I would
>> say.
>
>I agree. It is however again one of the problems where different
>relations will need different actions - when a way in a route relation
>is split, both new ways need to be members, but when a way in a turn
>restriction relation is split, only the one at the junction should be
>a member.
>
>Somehow I always thought that we should have a rather complex
>"presets" style configuration file for JOSM that tells it what to do
>with various kinds of relations but maybe a simple hack would be
>better than nothing for now; in the case of splitting ways perhaps
>just always ask the user what he wants.
>
That would be a great starting point. Users then get a better feel for how
relations work and provide feedback on how they would prefer the tools to
work. I don't think catering for beginners is necessary since JOSM is more
inclined to a power user or those who have got properly into editing and
thus have some general experience. Adding relation type data is probably not
high on the wish list of the first time user.

Cheers

Andy


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[OSM-talk] maxspeed=walking?

2008-01-03 Thread Mario Salvini
in lots of traffic-peaced-areas in germany "walking speed" is the 
maxspeed and there is no exact numeric value for this (4--12, >20km/h). 
To prevent wrong data in the database it would be the best to add 
"walking" as not-numeric speed-limit.

regards
  mario

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Re: [OSM-talk] Osmarender CC notice

2008-01-03 Thread Jochen Topf
On Thu, Jan 03, 2008 at 10:30:48AM -, Russ Phillips wrote:
> When I first started using Osmarender, it always automagically added a CC
> licence notice, and (I think) a scale bar. However, the latest version
> doesn't appear to do this.
> 
> Can anyone tell me how to get Osmarender to add a CC licence notice and
> (ideally) a scale bar?

Look at the beginning of the rules file, for instance
osm-map-features-z17.xml

showScale="no"
showGrid="no"
showBorder="no"
showLicense="no"

Set the ones you need to "yes".

Jochen
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[OSM-talk] Osmarender CC notice

2008-01-03 Thread Russ Phillips
When I first started using Osmarender, it always automagically added a CC
licence notice, and (I think) a scale bar. However, the latest version
doesn't appear to do this.

Can anyone tell me how to get Osmarender to add a CC licence notice and
(ideally) a scale bar?

Russ



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Re: [OSM-talk] [OSM-dev] SRTM relief

2008-01-03 Thread Lambertus
Will this be able to write the SRTM data as ways to .osm files as well? 
AFAIK there is no such utility yet, but it would be useful for creating 
e.g. Garmin maps.

Artem Pavlenko wrote:
> Hello lists,
> 
> Sometime last year I was inspired by http://www.srtm.com and I even  
> contacted developer to see if we can use SRTM derived relief maps in  
> OSM.
> I don't remember all details but reply was somewhat ambiguous:  yes  
> OSM can use pre-rendered tiles from the site above, source code (in  
> Java ) is a bit messy, cause my crazy mate coded something ...
> Anyway, while srtm.com tiles look good on its own, colour scheme is  
> not suitable for overlaying with OSM data IMHO. So I thought it would  
> be fairly straight forward to implement something from scratch.
> 
> Here is what I'm thinking about - a c++ command line app, which given  
> bounding box in geographic coordinate system (WGS84) would read  
> compressed raw SRTM files and output 'nice' looking maps (tiles) in  
> specified projection (I only care about Mercator and OS NatGrid but  
> others will work as well).
> 
> Here is more detailed feature list:
> 
> 1. highly configurable
> 2. all steps needed to produce final relief map included (relief,  
> blending , warping  etc)
> 3. read raw compressed SRTM directly
> 4. easy to add new algorithms
> 5. using GIL from Adobe for accessing pixels and implementing algos.
> 6. mapnik and OSM ready
> 7. perhaps it can be used for outputting contours as well (?)
> 
> I've coded a prototype based on excellent posting on http:// 
> perrygeo.net/wordpress/?p=7 and I'm looking for a good color scheme  
> that would work for the whole planet, any pointers?
> 
> Here is some test outputs:
> 
> http://artem.dev.openstreetmap.org/files/relief_osgb.png
> http://artem.dev.openstreetmap.org/files/srtm_relief.png
> 
> (red pixels are voids and I'm yet to fill them, did someone mentioned  
> some good algorithms a few months ago?)
> 
> The kind of reliefs I think might work well for OSM are gmap terrain  
> or perhaps Yahoo style.
> Any ideas or comments? Cartographers?
> 
> Thanks in advance
> Artem
> 
> 
> 
> 
> 
> ___
> dev mailing list
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Re: [OSM-talk] implementation of relations in josm

2008-01-03 Thread Jo
Frederik Ramm wrote:
> Hi,
>
>   
>> Also the other problem with 
>> splitting and merging of roads needs attention. Rather urgently I would 
>> say.
>> 
>
> I agree. It is however again one of the problems where different
> relations will need different actions - when a way in a route relation
> is split, both new ways need to be members, but when a way in a turn
> restriction relation is split, only the one at the junction should be
> a member.
>
> Somehow I always thought that we should have a rather complex
> "presets" style configuration file for JOSM that tells it what to do
> with various kinds of relations but maybe a simple hack would be
> better than nothing for now; in the case of splitting ways perhaps
> just always ask the user what he wants.
>
> Bye
> Frederik
>   
That sounds wonderful to me. Maybe a bit harder for people who are just 
starting, but they'll overcome it quickly enough. It's certainly better 
than breaking route relations. What if somebody tries to do the opposite 
(re)combine a road, where part of it is part of a route relation? This 
should simply be impossible. In fact I'm a bit disappointed the API 
doesn't simply forbid this, but that probably also has to do with the 
different kind of possible relations. I must admit that I didn't look 
into turn restriction and house numbering relations and what would be 
the requirements to implement those yet.

Polyglot

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Re: [OSM-talk] GpsWeather: When conditions for mapping are good

2008-01-03 Thread John McKerrell

On 3 Jan 2008, at 08:44, Michael Collinson wrote:

> At 11:16 PM 1/2/2008, Jo wrote:
>> Mike Collinson schreef:
>>> At 10:11 PM 2/01/2008, ivom wrote:
>>>
 Folks!

> From time to time, I am suffering from the limited reception
 capabilities of my Garmin Etrex Venture Cx. I guess this is a
 recognizable state of being, during a mapping session in urban
 canyons, walking around with an accuracy of 17 meters or more...

 I am looking for some sort of indication telling me, at which
 time-of-day there would be excellent conditions for creating
 tracks in a dense city area. Has anybody come about such a service
 on the web yet?


I haven't seen this one mentioned, someone showed it to me last  
month, looks interesting:

http://www.n2yo.com/?k=0&a=30

I haven't really looked at it much so I don't know if it's really  
useful but it looks pretty anyway (and works with the new OSMify :-D).

John

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Re: [OSM-talk] GpsWeather: When conditions for mapping are good

2008-01-03 Thread Michael Collinson
At 11:16 PM 1/2/2008, Jo wrote:
>Mike Collinson schreef:
>>At 10:11 PM 2/01/2008, ivom wrote:
>>
>>>Folks!
>>>
>>> >From time to time, I am suffering from the limited reception 
>>> capabilities of my Garmin Etrex Venture Cx. I guess this is a 
>>> recognizable state of being, during a mapping session in urban 
>>> canyons, walking around with an accuracy of 17 meters or more...
>>>
>>>I am looking for some sort of indication telling me, at which 
>>>time-of-day there would be excellent conditions for creating 
>>>tracks in a dense city area. Has anybody come about such a service 
>>>on the web yet?
>>>
>>>Currently I am not planning to upgrade on the hardware side, but 
>>>do not hesitate to suggest different makes, models or add-ons, 
>>>which would suffer less from this urban canyon problem.
>>>
>>>Kind regards,
>>>IvoM
>>>
>>
>>IvoM,
>>
>>I think what you may be after is being able to predict date/times 
>>when a) there is a good number of satellites in the sky around you 
>>so that your GPS device can get as many readings as possible and 
>>choose the best, b) the satellites are well distributed over the 
>>sky to help the mathematical calculation of the GPS device and so 
>>that they are not all blocked by a tall building at the same time.
>>
>>If so, try typing into Google: GPS Satellite predictor
>>
>>I came up with
>>
>>https://stellarsupport.deere.com/stellar/SatellitePredictor?language=en&country=US
>>
>>If I remember, http://sirius.chinalake.navy.mil/satpred/, is a good 
>>one, but it is dead when I just checked it.
>>
>>Unfortunately,  even that probably won't  help that much with urban 
>>canyoning - you'll probably have to do several runs and then tie it 
>>in with Yahoo imagery if you are lucky enough to have it for your 
>>area.  One tip, I've got my best results having my GPS device 
>>mounted in a bicycle saddle-bag - it provides a much more stable 
>>platform than walking.  And if you are walking and your device 
>>loses satellite connection, put it on a metal surface - a man-hole 
>>cover,  traffic-signal controllers, even large waste-paper bins. It 
>>seems to act as a ground-plane which improves the antenna gain.
>I have an external antenna, which has a magnet. When I stick it to 
>the frame of the bus or even the toddler's stroller/buggy, reception 
>increases dramatically. Could this be the same effect, or did I 
>simply increase the size of the antenna?
>
>Polyglot


Same effect.

I am sticking my head out with this new-fangled very high frequency 
satellite stuff but at lower frequencies, UHF TV and VHF, an antenna 
typically consists of several elements whose length and spacing are 
calculated relative to the wavelength (inverse of frequency).  Only 
one element is the actual antenna. The others act as 
deflectors/reflectors which concentrate the signal on to the active 
element.  I *think* this is the sort of effect we are seeing.  Your 
external antenna would actually consist of two bits I think, the 
pointy bit being the active element and a base connected to the 
antenna cable earth lead.   I dimly recall a radio amateur who 
figured out that if he strung his horizontal antenna a tuned distance 
above a local lake, he got fantastic reception - electrical 
connection of the reflector to earth is also important.  I certainly 
subjectively feel I get my best results (and strangest stares :-) ) 
putting the GPS device with internal antenna flat onto manhole covers.

Mike



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Re: [OSM-talk] implementation of relations in josm

2008-01-03 Thread Frederik Ramm
Hi,

> Also the other problem with 
> splitting and merging of roads needs attention. Rather urgently I would 
> say.

I agree. It is however again one of the problems where different
relations will need different actions - when a way in a route relation
is split, both new ways need to be members, but when a way in a turn
restriction relation is split, only the one at the junction should be
a member.

Somehow I always thought that we should have a rather complex
"presets" style configuration file for JOSM that tells it what to do
with various kinds of relations but maybe a simple hack would be
better than nothing for now; in the case of splitting ways perhaps
just always ask the user what he wants.

Bye
Frederik

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[OSM-talk] OSM on Gramin for Metro Manila, Philippines

2008-01-03 Thread maning sambale
Hi,

I intend to regularly maintain img file for Garmin GPS for my mapping
area (Metro Manila Philippines)
[http://www.openstreetmap.org/index.html?lat=14.594717284692324&lon=121.03235961646361]

I created a page download for this
[http://esambale.wikispaces.com/osmphil_gramin].
As I currently don't have a Garmin unit now, can somebody please get
the files and test if it works on your Garmin GPS.

The first file can be found here:
[http://esambale.wikispaces.com/space/showimage/20080102.zip]

If some Garmin users in the Philippines can use these maps, maybe they
can be encouraged to contribute.


cheers,

maning
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|  |  /T  |http://esambale.wikispaces.com|
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