Re: [OSM-talk-be] Question about speed limit rules in Belgium

2009-06-28 Thread Lennard
Maarten Deen wrote:
 Just a quick question:
 
 In Belgium, normal 2-lane roads have a maximum speed of 90 km/h. In more 
 populated areas and on hazardous points, the speedlimit is lowered to 70 km/h 
 by 
   a sign.
 How for does this speedlimit reach? In the Netherlands the rule is that 
 outside 
 villages, a speedlimit is valid for a roadsection, which is until the next 
 crossing or junction.
 Is it the same in Belgium, so if I don't see a speedlimit sign after a 
 crossing, 
 the speedlimit is not valid anymore?

A speed limit signed with a traffic sign (e.g. C43), and without zonal 
application, is valid until the next junction. This is not limited to 
outside villages (and neither is that so in The Netherlands, by the way).

Vanaf het verkeersbord tot het volgend kruispunt, verbod te rijden met 
een grotere snelheid dan deze die is aangeduid.

A partir du signal jusqu'au prochain carrefour, interdiction de 
circuler à une vitesse supérieure à celle qui est indiquée.

Wegcode / Code de la route, Art.68

http://www.wegcode.be/wet.php?wet=1node=art68
http://www.code-de-la-route.be/wet.php?wet=1node=art68

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Re: [OSM-talk-be] list of usefull links and tools

2009-07-10 Thread Lennard
Johan Van de Wauw wrote:
 Kwa hoogte zou ik eerder gebruik maken van de zopas (eind juni)
 vrijgegeven aster-data. De resolutie (en kwaliteit) daarvan is een pak
 beter dan van srtm.
 http://asterweb.jpl.nasa.gov/

Er zijn nog twijfels over de toepasbaarheid van ASTER binnen de licentie 
van OSM. Daar probeert men nu duidelijkheid over te krijgen.

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Re: [OSM-talk-be] Mapping GRs?

2009-09-07 Thread Lennard
Peter Bienstman wrote:
 Hi,
 
 A project that is of interest to me is mapping out the GR footpaths, as 
 described in:
 
 http://wiki.openstreetmap.org/wiki/WikiProject_Belgium/Walking_Routes

Great! But did you find any missing ones? We have so many entered in 
Belgium already. :)

 However, I was wondering if we are legally allowed to do so. Our French 

Yes, sure, go ahead.

 friends don't seem to think so:
 
 http://forum.openstreetmap.org/viewtopic.php?id=3665
 
 Or is the situation in Belgium different?

The situation in France isn't different, it's just that they're 
collectively scared of adding *publicly* marked routes into OSM.

What would happen if I were to spend a holiday in France, and mapped a 
bit of GR and put it in OSM? Would they delete it? If they did, I'd just 
put it back. And back... and back.

It's facts, people, nothing else. The only issue that could come into 
play is a trademarked or otherwise protected name. Fair usage also comes 
into play, then.

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Re: [OSM-talk-be] Foutieve mapping

2009-09-13 Thread Lennard
Lennard wrote:

 Verzoek aan iedereen er even vanaf te blijven, zodat het terugdraaien 
 goed kan lukken.

Het herstellen lijkt goed gelukt, maar het is mogelijk dat er nog een 
verloren node in de db staat.

Dit was trouwens weer een voorbeeld van de Live Editing mode in 
Potlatch. Beter kies je voor Edit with save als je wat wilt uitproberen.

Vroeger stelde Potlatch de vraag of je in probeermodus wilde werken. Dit 
was een explicietere vraag dan de huidige Live vs With save, die voor 
een beginner nietszeggend is.

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Re: [OSM-talk-be] Foutieve mapping

2009-09-14 Thread Lennard
Leon Vrancken wrote:

 Weet iemand hoe je dit kan stoppen?

Er is een escalatieprocedure voor dit soort gevallen.

http://wiki.openstreetmap.org/wiki/Vandalism

Deze volledig doorlopen kan dagen tot weken in beslag nemen. Echter, in 
dit geval was het duidelijk genoeg dat het volslagen foutieve edits 
waren, en heb ik nu deze changeset teruggedraaid. De procedure kun je 
echter gewoon doorzetten, want het lijkt aannemelijk dat dit niet de 
laatste edit van oland1750 zal zijn.

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Re: [OSM-talk-be] EGNOS works, mail to the EU??

2009-10-06 Thread Lennard
Marc Coevoet wrote:
 Hi,
 
 Since 1 oct, Egbos is available (is the EU variant of the GPS system).

It is not (the EU variant of the GPS system).

It is an augmentation system for the existing GPS system.

 Would it be an idea to mail
 Mr Antonio Tajani, European Commission Vice-President for Transport Policy,
 to obtain the EU map data, like it happened in the US??

There is no 'EU map data', but feel free to mail him.

 you don't have to pay taxes, until the data is free.

I will not recommend that you try, but I also won't stop you.

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Re: [OSM-talk-be] herinnering Antwerps OSM Cafe zondag 25 oktober

2009-10-23 Thread Lennard
wannes wrote:

 Okido. We kunnen toch nog niet routen afaik, dus gaat er ook niemand
 verloren rijden.

http://yournavigation.org/
http://www.openrouteservice.org/
http://www.cloudmade.com/products/routing

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Re: [OSM-talk-be] abandoned railways

2009-12-02 Thread Lennard
 But about visibility: it's a choice of the people in charge of the
 rendering.
 You could open a trac ticket to ask for a change as I don't think there's
 anyone on this mailing list who can edit the rendering rules directly.

You would be wrong, but please still open trac tickets for requests, to
have all requests in a single channel.

railway=abandoned/disused/construction rendering was reinstated on 8
October, after I forgot to add that when doing some earlier work. That's
what Ben was alluding to, when he said they were on again/off again on the
map.

http://trac.openstreetmap.org/changeset/18021

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Re: [OSM-talk-be] abandoned railways

2009-12-03 Thread Lennard
Luc Van den Troost wrote:

 Perhaps you can explain how 'abandoned' and 'disused' SHOULD be
 interpreted in relation to the rendering rules. As far as I have seen,
 the wiki pages about railways do not mention this. 

I can only explain at the moment how these situations handled on the 
mapnik map. How they *should* be shown, is another matter. Opinions 
differ. Personally, I don't need to see a (former) railroad on the map, 
when the tracks are physically gone, especially if it's converted to a 
cycleway.

 If both should appear on the map, then probably 'historical tracks' that
 are no longer visible should not be mapped, or at least not this way. 

Currently, mapnik renders railway=disused/abandoned/construction all 
with the exact same style: a dotted line.

 Historical items then might be mapped in a different way that is usefull
 for, for instance, a separate rendering or different layer. That would
 not only be the case for historical railway tracks, but as well for
 historical city walls, canals, gates, old river quai and docks, ... that
 all have influenced city development. But that is another discussion.

Hard to solve, unless *every* data user starts to understand and process 
something like date_start/date_end tags.

 Another 'historical' point is that it is a pitty that OSM doesn't offer
 a kind of 'time-machine'. On one side it would be nice to see the growth
 of OSM that way, on the other side the map we are currently making will
 be historical one day. If - for instance - Doel would be broken down for
 harbour expansion, going back in time then would show how it was before,
 same would be if the 'hedwigepolder' on the other side of the border
 would be flooded again. But again, that is just a side remark and
 another discussion.

Don't forget the Prosperpolder, where works are already under way to 
open it to the Schelde. I fear the infrastructure needed to store, 
process and show OSM as it was in a particular point in time, is not 
easy to construct. The sheer data volume means you need quite some 
processing capacity, both in CPU and storage.

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Re: [OSM-talk-be] data error? errors with osm2gml.xsl

2009-12-08 Thread Lennard
 For now I just remove this tag and process my data without it. For the
 Antwerpen status page I do not need it.

Removing a tag just because a tool doesn't grok it, seems like the wrong
thing to do. Unless you only removed it from your local data, of course,
and not from the OSM db. There is nothing wrong with a tag named
'3dshapes:ggmodelk' in OSM. The colon is used in various places in OSM
tags, as a namespace delimiter. The tool needs to be fixed, not the data.

By the way, I am the one that put it there. Be prepared for a lot more of
these tags, near the NL border. See
http://wiki.openstreetmap.org/wiki/3dShapes for more info. The /Details
page also explains 3dshapes:ggmodelk, and what you can do with it if you
encounter it. Basically, it's the value an object had in the original
dataset. If you're sure that what's imported is right (for instance,
really a house, really a forest, really water), there's no harm in
deleting the key for that object.

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Re: [OSM-talk-be] Hi all

2010-01-06 Thread Lennard
 but I think the NGI won't even consider doing that. In the import

It's certainly worth it to ask and explore this, before we turn all our
attention to CLC2000.

I also believe we should explore the Freedom of Information acts more.
Especially the Federal Decree has some interesting sections on our being
able to use official documentation released under FOI. But, being Dutch,
if someone from Belgium could delve into this, that would be better, I
think. One less barrier to scare the officials. :)

 section they describe how to do it.
 Do you all think it is worth it?

I have the entire CLC2000 dataset on my server, and had a quick look. The
answer is, obviously: yes and no.

Con: The data is old, some things will simply be outdated.

Pro: Some objects, like residential landuse areas, look pretty good. All
the typically belgian 'linten' are very recognisable.

Con: Other objects, like agricultural areas, are pretty large, and would
certainly not form a single continuous area IRL. This would need extra
checking after the import.

Pro: landuse mapping in Belgium, outside where there is yahoo hires
coverage and people have spent time tracing, is pretty lacking. Taking the
specific things from CLC2000 that would work nicely would be a good step
forward.

Pro: the way the French have setup the Corine import is that you can
exclude areas which are overlapping with existing OSM areas. You can then,
later on, import those areas missed due to overlap, by hand, from a
website. Ben said we could even delete existing OSM areas before the
import starts, if we know the existing mapping is inaccurate.

If you guys want, I could set up a map overlay with the raw CLC2000 data,
so you can check it out?

 I have got some more plans, but I promise I want do any bulk uploads
 without consulting you ;-)

Do you have any other potential datasets in mind?

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Re: [OSM-talk-be] De Lijn: gegevens vrij (onder voorwaarden)

2010-03-18 Thread Lennard
Marc Coevoet wrote:

 Die letuffe server toont welke gemeenten volledig zijn/doneerden.  De 
 legende van de kleuren heb ik nu even aangevraagd.
 http://beta.letuffe.org/?zoom=7lat=46.17913lon=2.89885layers=BFFFT

Linksonderin staat een link.

http://wiki.openstreetmap.org/wiki/Yet_another_validation_tool_for_osm_data#admin_level.3D8

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Re: [OSM-talk-be] De lijn: kaart met ballonnetjes, en de passerende bussen

2010-04-12 Thread Lennard
On 12-4-2010 20:20, Marc Coevoet wrote:

 Iemand een idee??

Ik heb een idee: vraag De Lijn of we de data op bredere schaal mogen 
gebruiken dan de 'onderzoeks'-licentie op persoonlijke titel die je nu 
hebt verkregen. Import van de locaties van bushaltes in OSM vereist dat 
de licentie zich niet tegen commerciëel gebruik verzet.

Vermits ze de hele dataset niet op die manier willen vrijgeven, willen 
ze wellicht wel alleen de haltelocaties vrijgeven tegen deze voorwaarden?

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Re: [OSM-talk-be] De lijn: kaart met ballonnetjes, en de passerende bussen

2010-04-12 Thread Lennard
On 12-4-2010 22:55, Marc Coevoet wrote:

 Welwel, ik ga ervan uit dat als we gaan naar de chauffeurs, we gelijk
 krijgen.

De chauffeurs hebben geen zeggenschap over deze bedrijfsvoering.

 Ik ga ervan uit, dat als we gaan naar Van Quickenborne, we gelijk krijgen.

En dat is een heel andere piste. Praten met Van Quickenborne is prima, 
om meer informatie vrij te krijgen, maar zal voor de data van De Lijn, 
waar we het nu over hebben, nog niet uitmaken.

 Ik schrijf over deze franse licentie, opdat het hier ook eens zo zou
 worden ...

We kunnen allicht hopen. Zolang er niet gelobbyd wordt voor deze zaak, 
zal er niet veel veranderen. Iemand, en dan heb ik het voor het gemak 
maar over een Belg ipv mezelf, zal zich in Brussel voor de zaak moeten 
gaan inzetten. Bijkomend probleem is dat er op zoveel niveaus gelobbyd 
moet worden. Bij de federale regering, de gewesten, de gemeenschappen, 
de gemeenten.

De tweede piste die bewandeld moet worden, is het opvragen van 
informatie met gebruikmaking van de diverse decreten over Openbaarheid 
van Bestuur. Als we daar nuttige informatie uit kunnen verkrijgen, en we 
kunnen er interessante initiatieven mee ontwikkelen, helpt dit om bij de 
overheid aan te tonen dat het tevens in hun interesse is om meer 
informatie vrij te geven.

 Zeg Lennard, wat is jouw interesse in de Belgische situatie??  Wat heb
 jij tegen/voor het vrijkomen van Belgische gegevens??

Ik ben voor het vrijkomen van Belgische gegevens. Uiteraard. En mijn 
interesse is gedreven door het feit dat ik tevens werk aan OSM in 
België, vanwege de nabijheid.


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Re: [OSM-talk-be] Deinze: last call

2010-04-20 Thread Lennard
 One of my idea would be to do a detailed mapping of the foret de
 Soignes / Zonienwoud, and organize this with local associations that
 are interested in the promotion of the forest and education to
 ecologie.

 This could also be done in collaboration with scientists who could be
 interested in a better mapping of the forest for further analysis.

 Wht do you think about this ?

I would not recommend mapping a forest, if you also want to cater for
newcomers. Interpreting GPS tracks is hard enough when you just start, and
working with GPS tracks from a forest with lots of tree cover requires
experience to make the right decisions.

However, if you have the right persons attending, and you are able to
convey those caveats, it could be a fruitful day of mapping.

If you do expect lots of newcomers, I would start with a residential area.

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Re: [OSM-talk-be] CORINE Land Cover 2000

2010-05-16 Thread Lennard
On 16-5-2010 22:34, Renaud MICHEL wrote:

 Well, there's no harm in asking, but as you say it seems compatible with the
 actual CC-By-SA (but I have no idea for ODBL).

I just learned the question went out, but we have not received an 
answer. That's not so strange, with Ascension Day and a weekend in between.

 It seems like a great idea, how does the import work?
 We have already some data imported in Belgium from the french import, will
 those regions need manual editing to integrate the two imports?
 Should we keep the landuse where they already exists in OSM belgium, or is
 the CORINE data much more accurate and should be preferred?

The CORINE data is not that bad, but is slightly generalised in the 
sense that features smaller than 25 ha are not present, and are rolled 
up as part of a larger area.

The way the import in France was done is to compare the CLC polygons to 
OSM polygons. Only CLC polygons with no overlap or a very small overlap 
to OSM polygons were automatically imported. The non-imported part of 
the dataset was then added to a web service, where each can select and 
export a non-imported polygon and add it to OSM themselves:

http://clc.openstreetmap.fr/


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Re: [OSM-talk-be] CORINE Land Cover 2000

2010-05-16 Thread Lennard
On 16-5-2010 22:35, Martijn van Exel wrote:
 I fail to see why there would be a problem, legally, to import
 CORINE if the license is compatible. IGN/NGI would not be a party in
 this, as the EEA licenses CORINE.

The NGI/IGN reference is for the CLC 2006 dataset specifically. The 2006
dataset is not publicly available from the EEA and has to be obtained
through the participating national agencies.

We already received permission to use the CLC 2006 dataset in The
Netherlands, but we then have to buy the actual dataset. The point is
moot, since we already have the much more detailed 3dShapes data. We can
still use CLC (2000) to enrich 3dShapes classifications.

For Belgium, it's different, and any broad addition of land cover to OSM
would mostly be welcomed, I assume.

 If it would be actually useful is another matter altogether. I think
 it would look nice on lower zoom levels, and could be useful as a
 starting point for individual mappers to improve upon, but more
 detailed data may already be available which would make a blanket
 import action undesirable.

That's why we're not aiming for a blanket import, but a directed (but 
still national) import. See my previous reply about the import method 
and the comparison to existing OSM polygons.

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Re: [OSM-talk-be] CORINE Land Cover 2000

2010-05-16 Thread Lennard
On 16-5-2010 21:47, Lennard wrote:

 The amount of changes between CLC 2000 and CLC 2006 is on the order of
 0.5% over the entire covered region. The overwhelming amount of polygons
 would be unchanged. I think there's not much harm in working with CLC
 2000, even if it is 10+ years old.

To follow up this part, a list of project details, including a contact 
person and the changes between CLC 1990 and CLC 2000. If we extrapolate 
the amount of changes for the 2000-2006 update, we can see that overall 
the 2000 data would still be pretty valid.

http://etc-lusi.eionet.europa.eu/CLC2000/countries/be/full

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Re: [OSM-talk-be] CORINE Land Cover 2000

2010-05-19 Thread Lennard
On 19-5-2010 7:01, Martijn van Exel wrote:

 can say is that he was not quite sure about the status of CORINE 2006
 - as far as I can see it is included in
 http://www.eea.europa.eu/data-and-maps/data/corine-land-cover-2006-clc2006-100-m-version-12-2009
 but I might not be quite sure what is being meant here.

What you see there is a bitmapped version of CLC 2006, with 100 m 
resolution. There is also a 250 m version there, and bitmapped images of 
the changes going from 2000 to 2006.

The seamless vector data, however, is not available, and that is the 
version we would need.

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Re: [OSM-talk-be] CORINE Land Cover 2000 (now with permission)

2010-06-04 Thread Lennard
On 18-5-2010 2:04, Ben Laenen wrote:

 OSM just works like that: start with big things and then get more and
 more detailed. For 70% of the country Corine is better than existing
 data, and I welcome anything which is an improvement.

There is now a blanket permission from the EEA to use any data available 
through the EEA website. This includes Corine Land Cover 2000

http://lists.openstreetmap.org/pipermail/imports/2010-June/000594.html

http://wiki.openstreetmap.org/wiki/European_Environment_Agency

I have the necessary databases set up and the relevant scripts from the 
French CLC import on my computer, and can work on generating a test 
import file. I could also generate an overlay showing the result of the 
import file, after filtering out CLC polygons that overlap with existing 
OSM polygons.

Ben had the notion that perhaps we should, before the import, delete 
inaccurate polygons, especially in the Ardennes. The proposed overlays 
could assist in determining whether that is necessary, and if so, at 
which scale.

Now that the legal issues have been resolved, and the technical setup 
has been mostly performed, the question remains about whether to proceed 
with an actual import? Don't worry about it happening overnight, we have 
plenty of time to discuss and review the steps involved.

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[OSM-talk-be] MapQuest Belgium

2010-10-20 Thread Lennard
Today, MapQuest rolled out a Belgian version of their Open MapQuest 
program. This is based on OpenStreetMap data and also uses several tools 
that have come to be regarded as part and parcel of OSM: The mapnik 
renderer is used to create the map, and Nominatim is used as the search 
engine. You can also click on the symbols at the top of the page, to get 
popups on the map with the category you searched for.


Currently it seems to be in French only, but I'm sure they've planned a 
Dutch language version in the future:


http://open.mapquest.be/

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Re: [OSM-talk-be] Meer regeringsdata van UK (transport)

2010-11-02 Thread Lennard
 Een tijdje geleden gaf ik de link naar alle bushaltes in de UK,
 vrijgegeven data.

En je hebt toen talk-gb gevonden. Voorstel om dit dan ook daar te
plaatsen, of het moet een voorbeeld zijn van hoe een ander land wel data
kan vrijgeven en België (cq. subdelen ervan) dat niet doen/kunnen.

 niet zo leesbaar als de gegevens die
 ik van de lijn kreeg (ze updaten de ftp server regelmatig, wil iemand es
 een nieuwe set?)

Ik had verwacht dat die boodschap nu toch overgekomen zou zijn, maar:
driewerf neen. Deze data van De Lijn is niet licentietechnisch niet
bruikbaar voor OSM. Zie ook de berichten van vorige maand, waarin De Lijn
stelt garanties te willen hebben, die wij niet kunnen bieden.

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Re: [OSM-talk-be] Simpele vragen van simpele mapper

2010-11-20 Thread Lennard

On 20-11-2010 17:51, Karel Adams wrote:


Leg me maar eens wat volgens u de GOEDE manier is om recht te zetten wat
een of andere brave maar wellicht niet erg snuggere voorganger
mismeesterd heeft in Balen. Ik heb het hier over de N136, vanaf het
dorpscentrum noordwaarts. Zoals wel meer gebeurt verandert deze een paar
keer van naam, maar in de huidige weergave is het Kerkstraat
tot helemaal buiten het dorp. Ik zag totnogtoe geen andere oplossing dan
deze erg lang Kerstraat verwijderen, en dan apart nieuwe straten
aanmaken. Maar dat vond ik zelf ook wel belachelijk, zodat ik het
voorlopig maar heb laten staan. Hoe dit wel aan te pakken?


Cut the way in two at the position where the name changes, and then 
change the name of the part that isn't Kerkstraat anymore. Repeat at the 
next spot where the name changes.


How to cut a way at the right spot, with Potlatch: Shift-click on the 
way to create a new node at the right spot, if there isn't a suitable 
node at that spot already. Then select that point and click 'x' to split 
it at that point.


With JOSM: select the way, hit 'a', and shift-click at the right spot to 
insert a node. Select the node, and hit 'p' to split the way in 2.


In Merkaartor: I have no clue, but maybe Chris Browet can comment?

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Re: [OSM-talk-be] University of Delaware

2011-02-13 Thread Lennard

On 13-2-2011 14:19, Karel Adams wrote:


Filip, met alle respect maar ik vind dat dit geen prioriteit mag zijn.
Hoo schoon ik het allemaal ook vind, we moeten de essentie van het
project respecteren, en dat heet nog steeds openSTREETmap. Al de rest
mag er zeker bijkomen, er is daar niets verkeerds aan. Integendeel, het
is met zulke zaken dat men een buitenstaander kan overtuigen dat OSM een
meerwaarde kan hebben boven de commerciële aanbieders.


Het doel van het OpenStreetMap project is om een *database* op te bouwen 
met vrij beschikbare geo-informatie. In het verleden ging dat inderdaad 
voornamelijk over straten, maar tegenwoordig moet dat toch breder gezien 
worden.


Het is echter *geen* doel van OSM op zich om dit soort mooie 
implementaties te maken met die data. Dat is aan derde partijen. Zelfs 
de kaart die men standaard krijgt op openstreetmap.org is eigenlijk geen 
deel van het project, maar natuurlijk wel een mooi visitekaartje.


Het draait dus om de data, niet om wat anderen daarmee kunnen maken.


Maar ons eerste doel moet zijn om een compleet stratenplan van België te
hebben en daar zijn we nog héél ver vandaan.


Inderdaad, alhoewel het gezegd mag worden dat we sinds enige maanden wel 
veel sneller straten en vlakken kunnen toevoegen, door het tracen van 
Bing. Dat heb ik bijvoorbeeld zelf ook gedaan, door in rap tempo straten 
en plaatsen in mijn omgeving op de kaart te zetten.


Daarmee mis je natuurlijk alle overige informatie 'on the ground', zoals 
namen, restricties etc. Dat is dan voor het komende voorjaar/zomer, om 
op basis van die ruwe, overgetrokken informatie, in hoger tempo de rest 
toe te voegen. Als de wegen zelf al in de database zitten, kun je een 
stuk rapper door een plaats heen om deze extra informatie te bekomen.


Wat wellicht wel nuttig zou kunnen blijken is een kaart waar je snel 
concentraties van straten zonder naam kan herkennen. Op de noname kaart 
moet je te ver inzoomen om een mooi overzicht van het land te krijgen.


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Re: [OSM-talk-be] Cell Phones Antennas

2011-04-21 Thread Lennard

On 21-4-2011 22:35, Pol wrote:


Ok I will do it. I'll contact them tomorrow and ask them precisely. I'll
do my report on that mailing as soon as I have a reply or an answer.


Excellent! I hope they're more willing to cooporate than they were to 
you before.



In general, we cannot use any government data in Belgium without
explicit permission. Either to any user or to OSM specifically.

Ok I wasn't aware of that.


It also depends on which part of the government it is. For example: If 
they publish a law that documents coordinates, we can use it without 
questions. Any law, decree is fair game, but IANAL.



But again, if I had spotted myself those antennas, the problem is still
the same ?


No. In that case, *you* gathered the data. You can add that to OSM 
without any issues.


It's the same reason we cannot enter street names from other maps, but 
we can enter street names we mapped ourselves.



Also noteworthy is that the map on ibpt.be http://ibpt.be says
Door deze site te gebruiken zijn de gebruikers gebonden door de
gebruiksvoorwaarden van Google. / En utilisant ce site, les
utilisateurs sont tenus par les conditions d'utilisation de Google.
So does it changes something ?


It shows either of two things:

1) They just included that generic notice without thinking too much 
about it.

2) They had to include it to be able to show a Google map.

Either way, the wording applies to the 'site'. So, please ask them to 
clarify their position with respect to their data. If they're willing to 
open up their data, doing it as a separate download, not on the map, is 
best. It avoids all traces of Google involvement.


Also, if you gathered your list of antennas by going over every map 
popup and writing down the coordinates, you've created a derivative work 
from Google.



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Re: [OSM-talk-be] Cell Phones Antennas

2011-04-21 Thread Lennard

On 21-4-2011 23:31, Pol wrote:


It's not my intention at all, by far !!! I'm a contributor and I want
OSM to be the best map for everyone, everyday.


We do too. That's why we're so cautious about data and licenses, and why 
I was so blunt to bring this import to light on this mailing list.



Can't wait for tomorrow ! I'll call them and I hope that I'll have the
good arguments in my mouth when I'll explain the situation and why we
would like to have it on OSM (/which is the hardest part/).


Let's hope so. You'll have to think about a reply to their previous 
argument of 'security'. What exactly is so dangerous about a list of 
telco towers?


As you also said, anyone can create such a list. It only takes a lot of 
time. If someone wants to sabotage them, they certainly don't need to 
collect the locations for the entire country.


They're also publishing their database on a Google based map. That's not 
exactly keeping it secret either. :)



But, whatever happens, and I do understand why you wanted to import them 
into OSM, I hope we can talk about this before anyone does an import, 
next time.


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Re: [OSM-talk-be] Logboek gebied

2011-04-26 Thread Lennard

 Ziet er op zich goed uit, maar ik krijg steeds Data not visible at
 this zoom level, please zoom in to see stuff. Het is me in 50
 pogingen geloof ik één keer gelukt daadwerkelijk in te zoomen. Het is
 behoorlijk irritant als je geadviseerd/verzocht wordt iets te doen wat
 je niet kunt doen...

Hoe probeer je dan in te zoomen? Het werkt hetzelfde als op de osm.org
kaart, bijvoorbeeld. Dubbelklikken, of het de scroll/zoom-elementen
linksboven gebruiken, of met shift-dragging.

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Re: [OSM-talk-be] Logboek gebied

2011-04-28 Thread Lennard

On 28-4-2011 0:49, filip wolters wrote:

Ik heb OWL en ITO eens bekeken. Ofwel kan ik er niet mee werken ofwel
vind ik het geen nuttig instrument om mijn ingevoerde data op te volgen.

[...]

Inderdaad, als je dat er van zou verwachten, dan is het een karige tool. 
Je kunt wel een RSS feed opzetten, zodat je direct een seintje krijgt 
als er in een gebied dat je interesse heeft, gewerkt is.



Bij ITO kan je filteren op sessions, tags en users maar niet by me en
by not me.


Dat kan zeker wel.


Nergens al je input met wijzigingen, zeker niet in een groter gebied
over een langere tijd. Nochtans zou op je persoonlijke pagina bij
wijzigingensets zoiets wel te maken moeten zijn door iemand met wat kennis.


Ik denk dat ze een uitgewerkte patch met open armen tegemoet zien.



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Re: [OSM-talk-be] OSM stats

2011-05-14 Thread Lennard

On 14-5-2011 10:20, eMerzh wrote:

Hi,
the lenght of osm highway are directly calculated from an osm2pgsql
with data from the 12th april.


I assume you took the projection into account? Plainly doing ST_Length 
will sum the projected length of the roads. The real length will be much 
lower.



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Re: [OSM-talk-be] Importing csv, good practices and tips : Multipharma Case Study

2011-05-19 Thread Lennard

On 19-5-2011 12:01, Julien Fastré wrote:

@Lennard : i didn't know about this test API. Can we use the test api
with JOSM ?


Yes, change the api url in the config.

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Re: [OSM-talk-be] Workshop Trage Wegen

2011-06-09 Thread Lennard

On 9-6-2011 21:40, Wouter Hamelinck wrote:

* First of all, please try to avoid mapping in the Haaltert region the
until that day. Now there remains a lot to be done (it is just out of
the old good quality Google image area). For newcomers it is more fun
if their work shows clearly on the map.


I seriously hope you actually meant just out of the old good quality 
BING image area ?



* If I remember well OSM-be has some loggers available for mapping
parties and the like. I could not find a page on the wiki about it.
Anyone has information? If they are available and could be used for
the workshop, how can I get them. I am commuting between Ghent and
Brussels so I can easily pick them up in any those two cities.


http://wiki.openstreetmap.org/wiki/WikiProject_Belgium/GPS_Devices


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Re: [OSM-talk-be] Problems with JOSM's unwanted behaviour.

2011-07-11 Thread Lennard
 But If you click on the last node of your way, then press Alt while adding
 the next node, then you end up with a new way that share its first node
 with
 the previous way.

Exactly, and that was what he was told in the ticket.

I entirely disagree with the suggestion to disable autocontinuation, and
am very content with the way JOSM currently works in that respect.

The example in the ticket (starting from a node in the middle of a way
produces a continuation) is convoluted as well. It *doesn't* do a
continuation of that way. That's also impossible in the data model.

In the example (in the ticket) that node is also the endpoint of *another*
way, and it does do a contination of *that*. However, it's made out to
appear that selecting a non-endpoint node of a way and then drawing from
that will produce a continuation. Not so.

In short: use the modifier key when drawing a new way from an existing
endpoint node. Don't go through all the hoopla of extending a way, then
splitting it, deleting the tags, applying new tags. That only makes life
difficult and indeed obfuscates the way history.

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Re: [OSM-talk-be] Problems with JOSM's unwanted behaviour.

2011-07-11 Thread Lennard
In the example (in the ticket) that node is also the endpoint of
 *another*
way, and it does do a contination of *that*. However, it's made out to
appear that selecting a non-endpoint node of a way and then drawing from
that will produce a continuation. Not so.

 No, you didn't understand the examples. I never sayed that a road was
 boken up in the middle and then continued. It is just when you start a

I was not saying that either.

[...]
 This is exactly what happens when editing at node 803205990.

This is exactly what I described.

 As most often, you intend to add a new road, the default behaviour
 should be like that.

I think it comes down to being of another mindset. For me, clicking an end
node to continue that way seems the natural thing to do. If it so happens
that end node is part of a crossing, so be it. I have to remember to use
ALT if I want to start a new way at the crossing.

Of course, I could be entirely spoilt from having worked this way in JOSM
for years. I thought Potlatch did the exact same thing. What is the
handling in Merkaartor for this situation?

 (Count once your ways when editing and compare extended existing versus
 added new ways)

That's not a fair comparison.

Often enough when adding new ways, you are *not* at a junction with
another way endpoint. You might be starting a new way in the middle of
nowhere, or branching off of another way, but *not* at a junction.

In my experience, when adding new ways, starting one at an 'endpoint
junction' is the exception.

 The splitting and additional obfuscating happens, while this seems the
 obvious way for most users of getting out of this unexpected alongation.
 For some messy results see my examples Verstrekenstraat and Jachtdreef.

I can actually agree with your other point, being that when splitting a
way, the existing ID should stay with the longest fragment. You might
modify your JOSM ticket to emphasize that part, or perhaps even better:
start a new ticket with just that request (with a reference to the current
ticket).

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Re: [OSM-talk-be] Fietsknooppuntennetwerk/Cycle node network

2011-08-31 Thread Lennard
 That is OK for JOSM, but a list like this (at the bottom) is simply not
 meaningful.
 http://www.openstreetmap.org/browse/changeset/917?relation_page=3
 This is much clearer.

Then ask for that page to display a note=* tag when a name=* is absent,
like JOSM does.

But why would you start making collection relations when a scheme already
exists? See here:

http://wiki.openstreetmap.org/wiki/Cycle_Node_Network_Tagging

Which as far as I can see meets your needs and relations conforming to
that scheme have been in the database for over a year.

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Re: [OSM-talk-be] rendle

2012-01-11 Thread Lennard

On 11-1-2012 19:33, Sander Deryckere wrote:

Met de nieuwe CT geef je als mapper idd alle rechten aan de OSMF. Het
heeft dus niets met de licentie op zich te maken maar wel met de CT.


Je geeft de rechten niet aan de OSMF. Je verleent de OSMF een 
eeuwigdurende, niet herroepbare, etc., _licentie_ op jouw data.



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Re: [OSM-talk-be] Snelheidslimieten

2012-02-13 Thread Lennard

On 13-2-2012 9:57, Sander Deryckere wrote:


Je kan ook even op de maxspeed kaart kijken om te checken welke wegen
een maxspeed tag gekregen hebben, en welke die zouden moeten krijgen
(als de maxspeed niet af te leiden is uit de omgeving dmv algoritmes).
http://www.itoworld.com/product/data/ito_map/main?view=124 (deze kaart
vraagt wel wat tijd om te laden).


Als dat te langzaam is, is er ook nog http://maxspeed.openstreetmap.nl/

(Hoewel ook die weleens langzaam kan zijn :))

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Re: [OSM-talk-be] Missing Maxspeed in Brussels

2012-08-06 Thread Lennard

On 6-8-2012 20:18, Joren DC wrote:

I made some big changes in my area yesterday (14:00); According to the
wiki it will update every day at 17:00 for the past day. No changes seen
so far. I'll wait a bit longer, because this map is very useful in order
to keep an overview of the missing speed limits. I'm experimenting with
JOSM and trying to make a 'speed limit'-layer if possible.


Of course, having maxspeed displayed in JOSM isn't very hard, and done 
before:


https://wiki.openstreetmap.org/wiki/JOSM/Plugins/Maxspeed_tagging

Also, for the Benelux, we have our own maxspeed overlay, which is 
updated continually:


http://maxspeed.openstreetmap.nl/

http://maxspeed.openstreetmap.nl/?zoom=12lat=50.8562lon=4.38844layers=B


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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland, bedankt Jo

2012-08-23 Thread Lennard

On 23-8-2012 15:22, Jan-willem De Bleser wrote:


- Verkeerde nummers, zoals relation bicycle rcn -60 die op node 75
eindigt, komen voor omdat de code niet op de juiste manier het
eindpunt van de relation bepaalt, maar eerder gokt. Ik heb een
voorstel gedaan voor een wijziging in de code dat dit hopelijk zal
oplossen.


Nu zijn we alweer bezig om deze kwestie voor 1 specifieke editor 
proberen op te lossen, terwijl een simpelere en meer pragmatische 
oplossing al jaren in gebruik is: het tonen van een door de mappers 
zorgvuldig ingevulde note tag.


Gaan we nu voor elke editor verzoeken indienen om deze 'name' te 
ontdekken in de data en te tonen? Want als Potlatch deze manier zonder 
fouten doet, zullen Potlatch-mappers geen note meer zetten. Consequentie 
zal dan zijn dat er toch scripts moeten blijven draaien die de note 
invullen.


Naast de editor toont de webinterface van OSM ook niet deze synthetische 
naam. Terwijl ook daar het tonen van een notitieveld bij afwezigheid van 
naam en referentie ook de kortste, simpelste en meest pragmatische 
oplossing is.


Het is mij verder om het even welke methode gekozen wordt, als het maar 
voor elke gebruiker van de data op eenzelfde manier zichtbaar is.



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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland, bedankt Jo

2012-08-23 Thread Lennard

On 23-8-2012 21:56, Jan-willem De Bleser wrote:

Maar de note tag hoort toch niet getoond te worden? Daar heebben de
Potlatch2 devs gelijk in, dat note bedoeld is voor de surveyor en niet
de kaartgebruiker.


En wie gebruikt de editors? En wie niet?

...

Juist: surveyors/mappers resp. kaartgebruikers. Die laatste categorie 
kijkt naar de gerenderde kaarten. Deze tonen de note toch al niet.



Je vraagt nu dat note anders wordt behandelt voor
Benelux dan voor de rest van de wereld. Daarbovenop is de note zoals
die nu ingevuld wordt redundante informatie, en als we de
softwaremakers zover krijgen dat ze die niet meer nodig hebben, des te
beter.


Je moet *alle* softwaremakers zover krijgen dat ze code ontwikkelen om 
uit de data deze synthetische naam te destilleren. Dat is me nogal een 
vraag.



Het meest pragmatische oplossing is een naam verzinnen voor die
routes, want dat wordt al getoond. Het meest pragmatische oplossing is
echter niet noodzakelijk de juiste.


Daarmee wordt die naam dan ook getoond in kaarten. Is dat dan gewenst?

Ik denk dat we niet zomaar uit zullen geraken. Deze discussie zal nog 
regelmatig terug kunnen komen.


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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland

2012-08-28 Thread Lennard

On 28-8-2012 21:06, Jo wrote:


Als ik zo'n paaltje tegenkom en ik volg 1 route, dan zou ik graag ook
het begin van die andere routes ingeven, maar ik weet dan niet waar het
paaltje aan de andere kant staat. Welk nummer erop hoort te staan, weet
ik natuurlijk wel en dat kan ik dus al in de note tag vermelden.


Dit is exact de reden waarom ik voorstander ben van het (ook) gebruiken 
van de note tag. Bij het mappen van zo'n netwerk moet je op een 
knooppunt toch altijd kiezen voor 1 van de routes, maar de andere kun je 
alvast als beginnetje aanmaken in OSM, met de note tag als hint.



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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland

2012-08-29 Thread Lennard

On 29-8-2012 23:14, Ivo De Broeck wrote:

Erg is dat, in Potlach zijn ze gewoon correct. En nu Potlach moet de
note NIET tonen. Wanneer gaat het eindelijk doordringen dat er
internationale afspraken zijn. Potlach is bij mijn weten de enige die
deze normen 100% invult. De hiking ipv foot is daar een mooi
voorbeeld. Blijkbaar had men nog niet opgemerkt dat 'foot overal in het
rood werd weergeven in de wiki en Potlach ongevraagd hiking invult. Tja


Tag-verschuivingen zijn in het verleden ook vaak via attritie gegaan, 
totdat het de moeite loonde om de laatste paar % dan maar in 1x om te 
zetten. In de wiki zetten dat een tag verouderd is, is echt niet genoeg 
om het ook zo te laten zijn. De data is leidend, niet de wiki.


Verder is er geen mechanisme om mappers van de oude tag in te lichten 
over elke verandering. Soms ontdekt men dan bij toeval dat iemand ooit 
in de wiki eens iets heeft neergezet en dat een editor met wat 
basisinstellingen een andere tag gebruikt voor zoiets als een wandelroute.


Tip: Potlatch heeft naast de presets ook prima mogelijkheid om tags naar 
eigen keuze in te vullen. Zo kun je dus ook met Potlatch route=foot 
invullen. Je bent niet afhankelijk van wat Potlatch voorschotelt.



JOSM is een prachtige tool voor mensen die weten waar ze mee bezig zijn.
Potlach is de ENIGE tool voor mappers (kijk bv eens bij building, de
gebruikers kan onmiddellijk de juiste soort building kiezen zonder
nonsens in te vullen of vijf avonden te studeren om te proberen de wiki
(vooral de Belgische) te ontcijferen.


building=yes

Voila, klaar.


Vraag: zijn we nog goed bezig?


Dat mag ieder voor zich beantwoorden.


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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland

2012-08-29 Thread Lennard

On 29-8-2012 23:37, Jan-willem De Bleser wrote:


Ge brengt me wel op een gedacht: we hoeven het niet te sorteren,
alleen de eindpunten te detecteren. Stel dat je alle wegen doorloopt
van de relation en telkens hun eindpunt toevoegt aan een lijst. Deze


Je legt met deze methode ook wel meer load op de API. Die is al niet zo 
vlotjes op complexe relaties met veel revisies.



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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland

2012-08-29 Thread Lennard

On 29-8-2012 23:43, Jo wrote:


Lol, zal ik ze er overal terug inzetten dan? 't Is eigenlijk een
kleinigheid. En daarna ga je dan de note tag afschaffen, want redundant?


Zo gauw je JOSM en Merkaartor en welke editors hebben we nog meer hebt 
aangepast zodat die ook de eindpunten zelf vinden. :P


Hoe kan een notitieveld van 1 mapper aan de anderen nu ooit redundant zijn?

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Re: [OSM-talk-be] wandelnetwerk zuid-dijleland

2012-08-29 Thread Lennard

On 29-8-2012 23:46, Jan-willem De Bleser wrote:


Je legt met deze methode ook wel meer load op de API. Die is al niet zo
vlotjes op complexe relaties met veel revisies.


Sorry, ik volg even niet.


Er werd gesproken over het bijkomend inladen van ways om maar de 
eindpunten te kunnen vinden. Dit in het geval niet de volledige lijst 
met leden was ingeladen.



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Re: [OSM-talk-be] Voertuigklassen

2012-10-10 Thread Lennard

On 10-10-2012 21:37, Ben Laenen wrote:

Case in point: I still have to find the first road in Belgium tagged with
access=destination that explicitely adds bicycle=yes and horse=yes (oh yes,


http://www.openstreetmap.org/browse/way/26740921

You're welcome. :)

I did that for a while, back then. Then it got tedious and I always 
forget horse=yes these days.



except a road where I added it myself because it had an extra uitgezonderd
fietsers sign below the uitgezonderd plaatstelijk verkeer.


That extra sign is quite unneccesary.

2.47. De opschriften uitgezonderd plaatselijk verkeer of plaatselijke 
bediening duiden op een openbare weg die slechts toegankelijk is voor 
de voertuigen van de bewoners van die straat en van hun bezoekers, de 
voertuigen voor levering inbegrepen; ook voertuigen voor onderhoud en 
toezicht, wanneer de aard van hun opdracht dit rechtvaardigt, de 
prioritaire voertuigen bedoeld in artikel 37 en fietsers en ruiters, 
hebben er zonder uitzondering toegang.


2.47. Les termes excepté circulation locale ou desserte locale 
désignent une voie publique qui n'est accessible qu'aux véhicules des 
riverains de cette rue et des personnes se rendant ou venant de chez 
l'un d'eux y compris les véhicules de livraison; y sont aussi admis sans 
exceptions les véhicules des services d'entretien et de surveillance, 
lorsque la nature de leur mission le justifie, les véhicules 
prioritaires visés à l'article 37 et les cyclistes et les cavaliers.


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Re: [OSM-talk-be] Initial stuck to the name

2013-03-16 Thread Lennard

On 11-1-2013 20:43, Ben Laenen wrote:


Zoals hierboven gezegd: notulen van de gemeenteraad. Dat zal natuurlijk
moeilijk op te zoeken zijn voor de meeste straten, maar je kan bijvoorbeeld
eens vragen of ze een officiële straatnamenlijst willen ter beschikking
stellen.


Nog een verlate reactie, maar Ben heeft gelijk. En met wat Google-kennis 
(het gebruik van site:* ) kun je al heel gericht zoeken zonder al over 
een officiële straatnamenlijst te beschikken.


We weten dus dat er een L. Claeslaan bestaat. Echter, een gemeente 
werd niet genoemd. Zoeken op osm.org levert 1 hit: Zoutleeuw.


http://osm.org/go/0EqYH_5K

Zoek dan eens met Google op claeslaan site:zoutleeuw.be.

Et voila: Veel hits met Louis Claeslaan.

Als je zoekt op l. claeslaan site:zoutleeuw.be kom je ook hits tegen 
waarbij deze weg in 1 adem genoemd wordt met de Elstraat en 
Dungelstraat. We kunnen er dus nu gevoeglijk wel vanuit gaan dat L. 
staat voor Louis.


Weer een afkorting in OSM weggewerkt. Aan Guy de eer om deze in te 
voeren. :)



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Re: [OSM-talk-be] Gebruik layer=-1 voor landuse

2013-10-16 Thread Lennard

On 16-10-2013 8:52, Georges De Gruyter wrote:

Het antwoord is gekomen, heb nog op de ongerijmdheid gewezen van zijn
vergelijking met tunnel en brug en gevraagd om de discussie verder via
de mailing list te voeren :

In Nederland is elke landuse=residential met layer=-1 getagt. Dat lijkt
me ook logisch want als je bijvoorbeeld een landuse=cemetary of garages
of zo hebt, dan wil je niet dat die onder de residential gerendered
wordt. Die anderen zijn belangrijker dan de residential. En de
residential onderbreken of een gat maken voor de andere landuses is
compleet onnodig en zorgt voor veel overbodige data. Ik zie dat niet
anders dan een layer toevoegen aan een tunnel of een brug. Daar wil je
ook taggen voor de renderer zodat die goed rendert. Een grote landuse is
veel overzichtelijker en handiger om mee te werken, in alle opzichten.


In Nederland zijn de gebieden met landuse=residential al in een heel 
vroeg stadium geïmporteerd, in de tijd van de AND-import. Toen was het 
blijkbaar nodig, of de toenmalige renderers (bijv. osmarender) 
ondersteunden het niet, om met de hand de landuse te ordenen.


Osmarender sorteerde bijvoorbeeld alles per layer en renderde dan de 
objecten in volgorde waarin ze in de .osm file stonden, dus met 
oplopende ID's.


De huidige methodiek van renderers, in ieder geval die ik ken en 
gebaseerd zijn op mapnik en/of de standaard kaart op OSM.org, is om te 
sorteren van grootste oppervlakte naar kleinste (binnen een layer 
klasse). Als je het in die volgorde rendert, zal het grootste gebied 
(een bebouwde kom met landuse=residential) altijd onder kleinere 
gebieden (een grasveld, een kerkhof) komen.


Het argument van layer=-1 voor landuse=residential heeft dus zijn 
oorsprong in het verre verleden. Met de huidige generatie renderers (en 
manieren om met data om te gaan) is het m.i. niet relevant meer. In NL 
had de uit de AND-tijd overblijvende landuse=residential allang ontdaan 
kunnen zijn van layer=-1.


Als dat gedaan is, is er alleen indien de landuse=residential valt 
binnen een nóg groter vlak landuse (bijv. een bos) nog maar een 
probleem. Echter, daar hebben we tegenwoordig multipolygon's voor, 
waardoor we een gat kunnen maken in het grotere vlak.


En ten slotte, we zouden ook weer kunnen terugkeren op een hele oude 
discussie, die van landuse als fysieke eigenschap vs. landuse als 
functie-omschrijving. Het is jammer dat dit in de begindagen niet direct 
onderscheidend is gemaakt in de tagging.



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Re: [OSM-talk] cycle/footpath

2008-08-25 Thread Lennard
Robin Paulson wrote:

 while we're on the subject of convoluted tagging schemes for highways,
 i've always been intrigued by the following combinations, which seem
 to mean the same thing, but are clearly different:
 
 highway=footway
 cycle=yes
 
 highway=cycleway
 foot=yes
 
 is there any difference between these two?

Yes, in the cases where I've used this way of tagging. The difference is 
in the signs used. The highway=footway;cycle=yes is mainly a footway and 
marked as such, but with a sub-sign saying 'cycling allowed'. This 
implies that the main users are pedestrians, and cyclists should take 
all due consideration to them, like not claiming the road. Cyclists are 
'guests'.

The other is actually the other way around. It's marked with a cyclists 
sign. You are allowed to walk on it (since there might not be a suitable 
  footpath or sidewalk/pavement nearby), but have to realise there are 
(fast) cyclists around. Often, the foot=yes is implicit, because 
pedestrians can go pretty much anywhere, like on cycleways if no 
pavement is present or even the main road if neither is present (at 
least in The Netherlands and Belgium). I'm using an explicit foot=yes if 
  the cycleway is not paired with a nearby pavement/footway, so the 
routers will know they can use it for pedestrians.

Now, what I'm curious about, and what came up in recent discussions on 
talk-be and #osm-nl, is how far the implicit foot=yes goes in both OSM 
in general, and current routers specifically.

Not every country has the same implicit access rules. For instance, in 
Belgium where a do-not-enter-for-drivers sign (round, white with red 
border) is used, with a sub-sign 'residents only', it is implicitly 
assumed that foot=yes (since pedestrians are not drivers, the sign does 
not apply to them), but also bicycle=yes;horse=yes, even though they're 
legally both drivers, and don't have to live on that street.

Currently, I would need to tag every such destination-only road in 
Belgium with: access=destination;foot=yes;bicycle=yes;horse=yes. Would 
it be possible in the future to mark such implicit nation-wide access=* 
rules for various types of road? So within Belgium, I could get away 
with the much easier access=destination and be done with it, unless 
there are explicit *=no access classes) ?

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Re: [OSM-talk] Live Data - all new Data in OSM

2009-05-13 Thread Lennard
Matt Amos wrote:

 these might be of interest:
 
 http://matt.sandbox.cloudmade.com/

Which would have been fine and dandy in the past, but somebody needs to 
nudge that one into life again, /me thinks.

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Re: [OSM-talk] Zonal restrictions.

2009-05-14 Thread Lennard
marcus.wolsc...@googlemail.com wrote:

 Sorry to say that but if there are ways within the zone
 such as bridges and tunnels that are not affected, then
 this is not a zonal restriction at all.

That's ridiculous. It's very possible for a bridge/tunnel to *cross* a 
zone, while not being part of the zone itself. E.g. an elevated motorway 
going over some ground-level zone, just isn't part of that zone.

Even if that bridged/tunneled road had an exit into the zone, zonal 
regulations would only start (or end, for that matter) at that point.


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Re: [OSM-talk] Corine Land Cover becomes a potential OSM data source...

2009-05-14 Thread Lennard
Martijn van Exel wrote:
 Interesting. We will be having the same kind of import versus existing
 data issue once more (if and) when the Nationaal Wegenbestand
 (National road database) is made available by the transport ministry.
 I did not give it much thought yet - may be some of my Dutch
 co-OSM-ers will have a more elaborate train of thought - but I was
 thinking along similar lines: import the data but tag it so that it
 won't show up in the map. Have a dedicated map layer on a local server
 that can be used to check existing user data, may be even a Potlatch
 layer if at all possible. I guess JOSM support would be easy enough
 through the WMS plugin.

I have to agree with Frederik on this. With the NWB you mention, it's 
likely the vast majority of it will not be relevant to NL coverage, 
since we already have had a mass import of AND data. Why should we 
'pollute' the OSM db with data that's not going to be used on a large scale.

I'd too rather see such a source of data on a separate layer/db, through 
WMS for instance, so that we can compare, and (like Gervase puts it) 
merge down what we want.

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Re: [OSM-talk] zones for motorway/in town/outof town?

2009-05-20 Thread Lennard
Radomir Cernoch wrote:

 The idea is not to create a node here starts city and a node here
 ends the city. The idea is to create a polygon which defines the border
 of 50 km/h speed limit. The problem of forgotten end node, which
 causes cities to leak all over the planet, does not apply.

Now we have an urban area, with a circular road with maxspeed=50, and 
streets and cul-de-sacs left and right of that road with maxspeed=30 
zones. And that is just a simple example. The polygons are going to be 
complex in some cases.

 The problem now is that you cant actually work with polygons as for
 example a motorway could pass over a zone-30.
 
 Sorry, I maybe didn't make myself clear. Polygon rules do not apply
 for motorways. Is there any country, where a highway inside a city has
 different speed limit from the highway outside of the city? Even if yes,

Yes.

 this can be specified in the set of country-specific rules...

Don't focus on the highway-in-city bit. Focus on the $random_road_type 
with a different maxspeed bridges over (or tunnels under) a zone with 
another maxspeed bit. You'll have two zone polygons overlaying each other.

 I can imagine a situation, where a normal 50 km/h road goes through the
 middle of a zone-30. Then there are two options:
 1) You split the zone-30 polygon into 2 polygons.
 2) You tag the 50 km/h road with maxspeed=50.

Right, exactly the scenario I mentioned at the top of this msg.

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Re: [OSM-talk] zones for motorway/in town/outof town?

2009-05-20 Thread Lennard
Radomir Cernoch wrote:
 Don't focus on the highway-in-city bit. Focus on the $random_road_type 
 with a different maxspeed bridges over (or tunnels under) a zone with 
 another maxspeed bit. You'll have two zone polygons overlaying each other.
 
 No, 'maxspeed' tag on a road does not imply a polygon with zone!
 There can be both in one place. Tag 'maxspeed' on a road is dominant and
 overrides any zonal restriction.

And what if the crossing way in the above example is part of another 
zone? Don't say it can never happen. City planners are loopy.

 However it's important to notice that two polygons can never overlap
 (unless there is a futuristic city with zone-30 area flying in the air
 above a 130 km/h highway).

Oh please, this is getting silly.

 I know it's pain to work with them, but the solution is to learn JOSM to
 split map into layers, not to adjust the data-model.

Right. Even smarter editors. PS: There are more editors than JOSM.

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Re: [OSM-talk] zones for motorway/in town/outof town?

2009-05-21 Thread Lennard
Cartinus wrote:

 AFAIK a way with maxspeed=signals is used for those portals with the 
 electronic speed signs you see over the motorway.

I actually hope mappers only use maxspeed=signals for those motorway 
sections where the speed routinely changes based on congestion or time 
of day. Not to note the fact whether those portals are just merely present.

And also not for the dutch system where portals signal a decreasing 
lower speed, just to alert arriving traffic that traffic in front of 
them is slowing down.

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Re: [OSM-talk] Coastline error checker broken

2009-06-01 Thread Lennard
 On Sun, 2009-05-24 at 16:33 +0100, David Groom wrote:
 The coastline error checker ( http://tile.openstreetmap.nl/coastlines.html ) 
 seems to be showing a server error.

 Any idea why / when this might be fixed?

Try http://dev.openstreetmap.nl/coastlines.html

But even though you may have the coastline slippy map at this location, 
it's dataset also hasn't been updating:

http://hypercube.telascience.org/~kleptog/last_update.txt

Last update of coastline errors: Thu May 14 15:00:14 UTC 2009
Using data available at: 090514

The tile name was moved to a new server, and a message was later sent to 
the maintainer of the coastline checker to... well... check it. The 
actual checker seems to run on hypercube.

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Re: [OSM-talk] Is Xapi working?

2009-06-09 Thread Lennard
Maarten Deen wrote:

 The server running the xapi service is down at the moment.
 
 Any info on what the problem is and when it's going to be resolved?
 
 And what is the status of the other two XAPI servers?
 Bearstech seems to be perpetually testing, and xapi.openstreetmap still 
 serves 
 0.5 data and 0.6 service will start shortly (ever since the move to 0.6).
 
 Any help needed?

Is XAPI 'officially' supported? I mean: is it considered one of the 
fundamental things in OSM land?

 I've had the telascience server serve me proper 0.6 data, so if there is a 
 data 
 issue, it's something that popped up at least after june 1st (that's the last 
 time I can confirm getting data).

There's more stuff on hypercube that's not running. The coastline 
checker is one of the major ones.

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Re: [OSM-talk] coastline

2009-06-12 Thread Lennard
Ulf Mehlig wrote:

 http://dev.openstreetmap.nl/coastlines.html?zoom=9lat=-1.59059lon=-45.26367layers=B00T
 
 shows a blank map to me.

Well, since the hypercube server is well and truly kaput at the moment, 
that is to be expected. The coastline checker runs on hypercube, and the 
slippy map above loads tiles from hypercube.

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Re: [OSM-talk] full history of a way?

2009-06-14 Thread Lennard
Richard Fairhurst wrote:

 Only if you save it. If you use the edit with save mode and don't save,
 you can just look.

What I've always thought could be useful is that when you select an 
earlier version from the popup, it would show on the map as well. Often 
there's multiple previous edits, and you're not always sure which is the 
one you want to go back to. You could visually check a few, before you 
decide to go which one to revert to.

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Re: [OSM-talk] Proper use of layer tag with the Mapnik renderer?

2009-06-21 Thread Lennard
Jon Burgess wrote:

 Layer name=bridges status=on srs=...
[snip]
 These rules will draw the motorway bridges above any secondary bridges
 regardless of the layering. I don't understand the logic behind the
 current rules, I believe they were done like this to fix some layering
 issues in some other complex junctions.

And this is one of the subjects I want to tackle, besides speed 
optimizations.

But the layering and z_ordering in osm.xml is already complex as it, and 
breaks down in some places, where you least expect it.

The major problem is the different layers and styles in the stylesheet 
have no knowledge of each other's existence, and z_ordering is done per 
mapnik Layer.

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Re: [OSM-talk] Flood in Vienna

2009-07-05 Thread Lennard
Bernhard zwischenbrugger wrote:

 Any idea where the blue background comes from in mapnik?

It's usually caused by a problem with one of the coastline shapefiles.

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Re: [OSM-talk] Converting polygon to OSM way?

2009-07-10 Thread Lennard
si...@mungewell.org wrote:

 Is there a way to convert the same polygon in to an OSM way so that I can
 merge this in and render it as a bounding shape (rather than the default
 rectangle).

I have used osm2poly.pl in the past:

http://trac.openstreetmap.org/browser/applications/utils/osm-extract/polygons


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Re: [OSM-talk] Proposal 'man_made:tower' and 'communications_transpoder'

2009-07-14 Thread Lennard
John Smith wrote:

 Jokes aside that isn't actually far fetched since the ACMA (Australian 
 Communications and Media Authority) has a big database of this information 
 available, although I'm not sure of the license on the data and I don't 
 really want to be the one responsible for importing it either for that matter.

Indeed, it isn't far fetched at all. There has already been an import of 
tower locations in The Netherlands, both broadcast and GSM/UMTS.

The official registry is here:

http://www.antenneregister.nl/www/tpl/frameset.html

The interesting part is that they also have public field strength tests, 
radiated power, directional coverage, frequency band.

At the moment, they have been imported in a way that will not render:

height=46
source=Antennebureau
source_ref=http://www.antenneregister.nl/
technology=GSM 900

Examples:
http://www.openstreetmap.org/browse/node/277227846 (this is a mast)
http://www.openstreetmap.org/browse/node/277227844 (church tower)

If the current proposal takes off, it wouldn't be that hard to do a 
re-import or re-tag them.

 The important bit is this, not all of these will be free standing GSM type 
 base stations, some will be base stations installed on buildings/power poles, 
 others are installed on water towers. Now that I think about the specifics of 
 GSM antenna installations, it just re-enforces my thoughts that this should 
 really be man_made=tower, tower:type= ...

The hard part in the NL import will be determining whether it's an 
actual tower/mast, or on the roof of a building.

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Re: [OSM-talk] Circular relation by user mapper_07

2009-07-15 Thread Lennard
Shaun McDonald wrote:

 This user, in changeset 1728656, has added relation 20773 has a member 
 of itself.

 Is this allowed, and if yes, what does it mean, or is it an error?
 
 Yes you can do it, though I don't have a good reason for doing such a 
 thing.

I once did that by accident, but the API wouldn't grok it:

http://trac.openstreetmap.org/ticket/2023

How did that user succeed to upload?

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Re: [OSM-talk] Just a thought

2009-07-20 Thread Lennard
Marc Coevoet wrote:

 The *-ish  give the maps of their country for free to OSM.

Did you take your meds today?

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Re: [OSM-talk] i18n-rich areas on the map

2009-07-23 Thread Lennard
Shaun McDonald wrote:
 Yeah it would be neat to render a captionless layer in mapnik and then
 overlay text on it.

 Can mapnik support that? I'd have thought adding any sort of text to
 the map might have implications for the rendering itself.

 The problem is being able to do the text collision avoidance stuff 
 against non-text features, hence why it's not been done before.

Collision avoidance across layers is slightly doable, but requires a 
good amount of effort. This particular example isn't helped by the fact 
that you're dealing with variable length texts for the same feature here.


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Re: [OSM-talk] maxspeed tagging Was: Best-practice-idea traffic_sign

2009-07-30 Thread Lennard
 2009/7/30 John Smith delta_foxt...@yahoo.com:
 bikes have the same speed limits here as every other thing on wheels,
 and even horses for that matter, and you can get tickets like all the
 other wheeled vehicles and even get done for drink driving on horses and
 ride on lawn mowers.

That's exactly why I talked about my jurisdiction (The Netherlands), which
doesn't have an implicit maxspeed for bicycles. It apparently never was a
real problem in law enforcement, or it would've likely been amended.

 explicit speedlimits here as well, but Lennard was writing about
 implicit speedlimits (in town=50 and the like). Those are not valid
 for bicycles, but this is IMHO also not a very important issue, as
 most bikers don't get beyond 50km/h.

Exactly, it's a moot point, and I included it mostly to make the point
that there are so many subtle ways to handle maxspeed, that it would be
difficult to make an all-encompassing tagging scheme. At some point,
you'll just have to go with a generalized solution.

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Re: [OSM-talk] maxspeed tagging Was: Best-practice-idea traffic_sign

2009-07-30 Thread Lennard
 Lennard wrote:
 The general solution is maxspeed is the highest of the maxspeeds of all
 classes of vehicle on that road.
 See also the signs we have in continental europe when you enter a country:
 there is usually a large sign specifying the maximum speeds on different
 roads
 (within town, outside town, motorway). I have never seen a different sign
 for
 mopeds, HGV's or vehicles with a caravan, it is always the maximum for all
 vehicles.

In that case, your 100/100/40 example is easily collapsed into maxspeed=100.

Let's see ... Hey, that's the current tagging scheme, already! Why did we
need a change? :-)

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Re: [OSM-talk] Help Deleting Changeset

2009-08-02 Thread Lennard
Ian Dees wrote:

 I downloaded the osmChange file from [1], changed all the create to 
 delete and tried to upload it with JOSM. JOSM says there's no data to 
 upload.

I would think you'd have to open a new changeset and upload the 
osmChange directly to the API, not from JOSM.

PS: Why did you tag all those nodes with landuse=cemetery?

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Re: [OSM-talk] Help Deleting Changeset

2009-08-02 Thread Lennard
Ian Dees wrote:

 How would I go about doing that? I suppose I could use curl or something 
 similar, but is there a better way?

If you can run perl scripts, have a look at:
http://trac.openstreetmap.org/browser/applications/utils/revert


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Re: [OSM-talk] Cyclelane on left/right

2009-08-15 Thread Lennard
Richard Mann wrote:

 The rendering can apparently be done using Mapnik's 
 LinePatternSymbolizer (which does at least now have some documentation 
 on the Mapnik site), but knowing that much and achieving the result are 
 two different things. I'm hoping it's months rather than years.

Very good progress has been made recently on offset rendering for the 
LineSymbolizer. I'm indeed hoping we can use this something this year.

http://trac.mapnik.org/ticket/180

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Re: [OSM-talk] Announcemen: Multilingual Country-List

2009-08-17 Thread Lennard
Peter Körner wrote:

 It reaches 100% when /Tromelin Island /is set to not-ok.

I got Bahasa Indonesia at 229/230 with 2 countries (Tromelin, Turkey) as 
not ok.

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Re: [OSM-talk] server not rendering fully

2009-08-18 Thread Lennard
Kenneth Gonsalves wrote:

 I am setting up an India specific server with mod_tile and mapnik. I finally 
 got 
 the beast to work, but at higher zoom levels it is not rendering completely. 
 Apparently it is giving up instead of generating the tiles fully. Obviously 
 there is some setting I have to make in apache config to force it to produce 
 the full tiles regardless of how long it takes. I have disable cache and also 
 lengthened the timeouts. Any one has a clue as what can be done to force it 
 to 
 render the tiles properly? The server is here:

- Update your osm2pgsql to the current version (SVN version 0.66-17102)
- Use the default.style from that newest osm2pgsql (SVN)
- If you didn't already, pick up the newest osm.xml from SVN
- Reimport your data into postgis
- Update your mapnik to be at least 0.6.0 (current: 0.6.1)
- Recompile mod_tile to synch it with the new mapnik
- Clear your cache, restart apache
- Try again

To all that interests this: don't rely on tools included by your linux 
distribution to be up to date.

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Re: [OSM-talk] GSoC End: signFinder

2009-08-19 Thread Lennard
Arlindo Pereira wrote:
 Perhaps would be a good idea to set up a wiki page for the signs with 
 the colors and a sample photo?

Not to mention the habit of some municipalities here to clarify the name 
of the street on a separate line. Or what about Belgian bilingual signs, 
with a creative

Rue
  actual name
Straat

system, cleverly making use of the fact that in French the 'street' word 
goes at the beginning and in Dutch it goes at the end.

 building numbers of the block and the street's postcode (which are not 
 like zip codes, they're different for every single street).

ZIP code systems are not always of the one number for a big block of 
houses/streets variety.


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Re: [OSM-talk] Max recommended size for multipolygon relation?

2009-08-23 Thread Lennard
John Smith wrote:

 Apparently there is a 1000 member per relation limit.

Not true.

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Re: [OSM-talk] Stream in a tunnel

2009-08-24 Thread Lennard
Andrew Ayre wrote:

 This way:
 
http://www.openstreetmap.org/browse/way/39456905
 
 is marked as layer = -1, tunnel = yes, waterway = stream. I was 
 expecting it to be rendered by Mapnik as a dashed line and paler to 
 indicate it was underground, but I don't see that.
 
 Any ideas why?

Yes. It was rendered as a tunnel, but then overwritten by the non-tunnel 
variant.

I've committed a fix, which will probably show up on the map in a few days.

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Re: [OSM-talk] my flag is not showing on the green

2009-08-27 Thread Lennard
Kenneth Gonsalves wrote:

   Parameter name=tableselect node from planet_osm_point where 
 golf='green' as golfmarkers/Parameter
 
 but the flag is not showing. What could be wrong?

select way from planet_osm_point  

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Re: [OSM-talk] source=(survey, yahoo, gps...)

2009-09-08 Thread Lennard
Valent Turkovic wrote:
 I can see that Potlach support source tag but JOSM doesn't.

 Do you use source tag? Why and how, please explain? I read the wiki page 
 but I don't see many people use it and I'm wondering why.

JOSM supports addition of any tag, provided you can type, so I don't see 
why you'd say it doesn't support source=*. You're not always, every 
time, relying only on built in presets, are you?

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Re: [OSM-talk] source=(survey, yahoo, gps...)

2009-09-08 Thread Lennard
Valent Turkovic wrote:

 Presets speedup many things, so it would be nice to have also presets for 
 source= tag.

Then create your own presets for your desired source=* tags.

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Re: [OSM-talk] how to map this? cycleway or footpath?

2009-09-10 Thread Lennard
Shaun McDonald wrote:

 This isn't a highway=path since the surface is tarmac.

highway=path + surface=tarmac

Plenty of =1 meter wide paths around that have concrete/tarmac/asphalt 
surfaces, for instance.

 From all the discussion in the past year, or at least since the 
invention of =designated, it seems we all just agree to disagree.

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Re: [OSM-talk] mapnik rendering

2009-09-10 Thread Lennard
Shaun McDonald wrote:

 It's really old news, that tile.openstreetmap.org is using the  
 minutely diffs.

But Steve was out at a conference when we switched over to the new tile 
server. Which is fast enough that it doesn't drop any render requests 
any more.

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Re: [OSM-talk] Revert changeset

2009-09-14 Thread Lennard
Arlindo Pereira wrote:

 I'd like to ask to revert the changeset 2452658:
 http://www.openstreetmap.org/browse/changeset/2452658
 
 It has been made by a user mistakingly adding Rio de Janeiro's POIs
 somewhere on UK.

Done, but seeing as this was node/way creation, it could've just as 
easily been done by you or him by just deleting those objects.

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Re: [OSM-talk] Patch to render names from routes and custom highway shields on a per country basis

2009-09-16 Thread Lennard
John Smith wrote:
 While my patch works, I don't know if this is the best solution to the
 problem or not:
 
 http://trac.openstreetmap.org/attachment/ticket/1666/osm.xml-patch

I commented on the ticket.

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Re: [OSM-talk] Patch to render names from routes and custom highway shields on a per country basis

2009-09-16 Thread Lennard
John Smith wrote:

 I didn't think it would be the best option, for most of the reasons
 you point out, however we have to start some where, so I thought I'd
 get the ball rolling.

You're most welcome to do that, as in #osm-nl we have talked about 
regionalised rendering as well, in the past. I've rolled one small 
aspect of this out on our walking routes map, which renders different 
shields for The Netherlands and Belgium. I did copy our country boundary 
polygons to another table, because if for some reason the country 
boundary in OSM is non-closed, the whole regionalised rendering would 
fall over.

My thoughts are that the import process should sort out the hard part of 
this: comparing of features against a polygon, and stamping them with a 
field we can filter on in mapnik. Either by running some sql at the end 
of the import (but should also work for diffs and changed polygons), or 
by doing this itself.

What were the other issues you had thought up?

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Re: [OSM-talk] Patch to render names from routes and custom highway shields on a per country basis

2009-09-16 Thread Lennard
John Smith wrote:

 This is already dealt with for coast lines, so it shouldn't be much of
 a jump to deal with country borders in a similar way.

Indeed, but a factor to take into account. Only update your internal 
version of the boundary when a newer and valid version is in OSM.

 At present we're using multiple relations where the name changes along
 a route but the ref stays the same and vice versa so it's not possible
 with the current pre-processing that is done to do a nice little query
 to get the shield and name from the same query. I have no idea how to
 fix this.

If those relations get flattened into a planet_osm_line geometry, you 
have 2 (or more?) for the same stretch of road. One for the shields, 
another for the name. Join them up in a query, or split shields and 
names handling everywhere and take what you need from the relevant 
geometries.

 The other biggy is dealing with the country borders during
 pre-processing, again no idea how to do this.

You'd have to supply osm2pgsql with the relevant borders right off the 
bat, before it starts importing. That would mean 2 runs over the planet 
file (ouch!), or publishing a separate file with the relevant data. That 
is if you let osm2pgsql do the processing. As with coastlines, the 
country/state boundaries don't change drastically in the course of 
weeks, so an updated version of the regions could be generated every 
once in a while.

OTOH, if osm2pgsql will only run some queries and let postgis handle the 
stamping of features with a proper field to filter on in the stylesheet, 
it can be done at the end of the import. The challenge to this method is 
in how to handle diffs. You wouldn't want to run through every geometry 
in your database everytime you import diffs, but only the changed ones.

One more issue I see is what to do with features that cross these 
boundaries? Which style will/should they get? Should the import split 
them into 2 features, each on one side of the boundary?


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Re: [OSM-talk] Patch to render names from routes and custom highway shields on a per country basis

2009-09-19 Thread Lennard
Martijn van Oosterhout wrote:

 I suppose it would be possible to get osm2pgsql to assign columns
 based on country locations, if the relevant polygons were available in

Not just countries, but also states (different shields per state, for 
instance). Granted: same thing really.

 One more issue I see is what to do with features that cross these
 boundaries? Which style will/should they get? Should the import split
 them into 2 features, each on one side of the boundary?
 
 Tricky, not something that's going to be solved the first try.

A little birdie once told me of a trick used by a certain map maker. 
Split the border-crossing road twice, so there is only a short section 
that actually crosses the border; probably less than 10 meters. Assign 
one of the styles to that short section, either randomly or by length or 
any other means. Because these sections are so short, it's not 
noticeable on a map, and you don't have style bleed.


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Re: [OSM-talk] Patch to render names from routes and custom highway shields on a per country basis

2009-09-20 Thread Lennard
John Smith wrote:

 This is one reason to do these sorts of routes as relations instead of
 trying to cram lots of information into the way, you then should avoid
 overlapping shields if the rendering process is doing it's job.

Relations hold a certain advantage in this case, but we have to consider 
the non-relation variants as well.

 If it's just ref numbers changing that shouldn't need anything more
 than to split the way would it?

Indeed, but I'm thinking ahead here, to a situation where the style of 
the road itself would change at a border.

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Re: [OSM-talk] Patch to render names from routes and custom highway shields on a per country basis

2009-09-20 Thread Lennard
John Smith wrote:

 They end up in the DB more or less identical, it just means 2 queries
 or a join etc instead of a simpler query.

Now you're just thinking of a single renderer and its way of processing 
the data. Did you take osmarender into account? How does it handle the 
road relation at this point?

As much as people always say to not tag for the renderer, we should also 
not design tagging specifically geared towards one specific renderer.

 Indeed, but I'm thinking ahead here, to a situation where the style of the
 road itself would change at a border.
 
 The suggestion you made to prevent style bleed sounds like tagging for
 the renderer, if that does occur the renderer should be fixed instead.

Don't forget it's not that often that a road would cross a boundary and 
continue a long distance. Names change, refs change, maxspeed, surface, 
etc. We're already breaking it up for any number of reasons, at a border.

But, a bit of preprocessing could also be involved, so that we don't do 
'tagging for the renderer', if that makes people feel better. :P

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Re: [OSM-talk] trunk_link ref=*

2009-09-25 Thread Lennard
Cartinus wrote:

 We (should) map what is there. So the real question is: Do sliproads between 
 trunk roads actually have a ref in the real world?
 
 If I'm not mistaken, then they don't have one around here (the Netherlands).

They do, at least between motorways. They are usually numbered the same 
as one of the motorways they connect to, followed by a letter. One of 
the reasons being that if something happens there, you don't have to 
explain emergency services where you came from and where you were going, 
but can just tell them the ref on the nearest marker. Say where the 
motorway has ref=A16, the motorway_link may be numbered ref=A16f.

In Belgium, they can have refs too, but they seem to be a longer 
(internal?) version of the numbering scheme. For example, a 
motorway_link onto the R1 can have a ref of R001.427.

Personally, I don't think these should be rendered on the main maps, and 
they should not be made up by us if there is no real ref on the ground.

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Re: [OSM-talk] trunk_link ref=*

2009-09-25 Thread Lennard
Dave F. wrote:

 Personally, I don't think these should be rendered on the main maps,
 osmarender:renderRef is a tag to prevent rendering.

I said 'maps', plural. One renderer's trick of not showing certain 
features is certainly the wrong approach to this.

  and they should not be made up by us if there is no real ref on the ground.
 Would they not be essential for routing software?

Why would you think that made up refs would be? Why would you even think 
that refs would be essential at all for routing? The only thing they are 
good for in the router is to give the driver better instructions.

Take the next exit, and follow the A29

Now, if I'm on currently not on the A29, and I get this instruction, 
what is unclear about that? I see an exit coming up, probably even 
reinforced with signs pointing out that that is the direction to take 
for the A29. Clear and to the point.

Take the next exit, follow the slip road A58-A29*, then follow the A29.

Exactly how would this be better? A58-A29 won't be on signs, and it 
tells me non-essential information that could confuse me.

* Assuming this is what we in OSM made up as a ref.

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Re: [OSM-talk] Bot removing attribution tags

2009-09-27 Thread Lennard
Matthias Versen wrote:

 A border-way should contain admin_level=X where X is the highest number 
 of the border it represents and an boundary=administrative Tag.

Lowest

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Re: [OSM-talk] [tagging] Feature Proposal - landuse=orchard

2009-09-29 Thread Lennard
Emilie Laffray wrote:

 That would mean that Mapnik needs to be checking a secondary field to 
 determine what to display. If the renderer doesn't do that, you will end 
 up with a map that is poorer in the end. In your case, that would mean 

That's not really so different as highway + access, or 
highway=service+service=*. And while it is nice to keep render 
complexity in mind when you design a tagging scheme, don't let it make a 
case against the more logical tagging.

 increasing the size of the table produced by osm2pgsql by one extra 
 column. Overall, you are increasing complexity with little or no benefits.

Which means 1 bit per row, for the most part.

 I am not sure it makes sense in the end since were are getting exactly 
 the same of information if you are using the tag directly in landuse.

Extensibility. Plain and simple. If you come up with a new category for 
agricultural=*, and while you wait for the renderers to pick that up, 
you're still getting a plain landuse=agricultural rendered. Not a white 
spot on the map. Data users that don't need the complexity of different 
agricultural uses only need to process the main landuse=agricultural 
tag, and not try to group various agricultural landuse types into 1.


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Re: [OSM-talk] Getting roles of relation's members in PostGIS using osm2pgsql

2009-11-15 Thread Lennard
Ciprian Talaba wrote:
 Thank you about this info. I will probably start with the last approach 
 (using planet_osm_rels and planet_osm_line tables) because this will 
 keep my code separate from osm2pgsql. I will try to publish my tries 
 because I believe others will be interested in something like this.

Some code snippets that may be useful in your endeavours:

Unnest an array. Later postgresql has this builtin, I think:

CREATE OR REPLACE FUNCTION unnest(ANYARRAY) RETURNS SETOF ANYELEMENT
LANGUAGE SQL AS $$SELECT $1[i] FROM
generate_series(array_lower($1,1),array_upper($1,1)) i;$$;

Unnesting a relation from planet_osm_rels gives you a list of all 
members, with the first character telling you what type of object it is, 
with the rest being the osm id.


Unnest only way members of a relation in the planet_osm_rels table:

CREATE OR REPLACE FUNCTION unnest_rel_members_ways(ANYARRAY) RETURNS 
SETOF ANYELEMENT
LANGUAGE SQL AS $$SELECT substring($1[i] from E'w(\\d+)') FROM
generate_series(array_lower($1,1),array_upper($1,1)) i WHERE $1[i] LIKE 
'w%';$$;

select unnest_rel_members_ways(members) as members from planet_osm_rels 
where id=your relation id;

This gives you a list of only way ids, 1 per row, with the first 'w' 
character stripped. You still need some way to join the member role in 
the results. I didn't get that far when I wrote the unnest function, as 
I didn't need the role at the time.

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Re: [OSM-talk] positioning of barrier = stile

2009-11-15 Thread Lennard
David Groom wrote:

 I have been doing the former, but it appears this might stop routing 
 applications allowing a car to travel from c - d as the barrier = stile 
 blocks the road to vehicle transport, and so the second tagging option 
 might be better.

It seems you already answered your own question. Having the node with 
the barrier in the c-d road would make it also be a stile that is 
blocking travel in that road.

I've used your 2nd tagging, with the node with the stile a small 
distance away from the connecting road.

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Re: [OSM-talk] solved - why does mapnik not display my circles?

2009-11-17 Thread Lennard
Kenneth Gonsalves wrote:

 that did not work either - I started moving the code around the file. Then in 
 generate_images, I saw one circle peeping out from behing a building. So I 
 moved the layer *after* the building layer - and there are my circles in all 
 their pristine glory.

I nominate this for the DUH! moment of the day awards. :D


http://en.wikipedia.org/wiki/Painter%27s_algorithm

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Re: [OSM-talk] NoName

2008-09-15 Thread Lennard
Ed Loach wrote:

Resend to list (I loathe this ML for its reply functionality, but will 
not go further on that subject):

 Similarly, if you start your journey in an area where there are no
 signs, you are expected to know the speed limit already before you
 see any signs. Do other countries have speed limit signs on every
 way? That's not how I remember it from my brief visits to the USA
 and Crete (other holidays didn’t involve driving).

Commenting on the NL situation: there are default speed limits for road 
classifications and where they are (inside or outside built-up areas). 
These can be overruled with posted speed signs, which only apply until a 
junction (motorway: on-ramp) in the road. After the junction (aptly 
called a 'decision moment' in pseudo-legalese) the sign has to be posted 
again if it differs from the road default.

To overcome the multitude of signs, in many places they're now using a 
zonal application of posted speed signs, where the sign is the same, but 
it's framed on a rectangular sign with the word 'Zone' written above or 
under the speed sign. These apply until you've passed the 'end of zone' 
sign (with diagonal stripes). Only zone-30 is possible inside built-up 
zones (default: 50kph), and zone-60 outside (default: 80kph). Every 
other speed limit is posted with the regular signage regime.

There have been cases where the zone was 'leaky' and you could enter it 
without having seen a sign. You'd have to document it fairly well if you 
got a ticket and wanted to legally challenge it, but that could succeed. 
  The reason being: how could I have known, when I've encountered no 
signs?

So, having a way to apply a speed limit to a broad range of roads 
(zones, built-up areas) and having a/various nation default(s) would be 
helpful.

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Re: [OSM-talk] Two lanes or...

2008-09-23 Thread Lennard
Xav wrote:
 How should we map this ?
 http://www.youtube.com/watch?v=CeJ2vRQC7iY

intoxicated=yes
toxic_level=dangerously_high
spirit=vodka
fun=youbetcha

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Re: [OSM-talk] POI by coordinates

2008-10-16 Thread Lennard
Tom Hughes wrote:

 the situation is: I've got a POI in the area where I'm only in summer.
 I've marked in somewhere in Google Maps and now I want to mark it in OSM.
[snip]
 ...but bear in mind that importing data which has been derived from 
 Google Maps is not allowed anyway!

Even when someone has been there, verified the POI, and used Google Maps 
only as a fancy kind of notepad, in lieu of jotting down the coordinates 
on a piece of paper ?

Of course, I understand, if he has placed the POI in Google Maps by 
checking their map and positioning the node from memory, this would not 
be usable for OSM.

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Re: [OSM-talk] Proposed Relations

2008-11-05 Thread Lennard
Frederik Ramm wrote:

 2. I want relations to become ordered and will try to sneak this into 
 API 0.6; there will be no noticeable change for any API client, just 
 that it so happens that things are returned in the order you put them 
 in, rather than in any order.

There is one noticeable change here to clients: if they download such an 
ordered relation, and upload a newer version, they should have kept the 
ordering intact.

The current unordered relations mean that a client can store it locally 
however it likes, and upload it in a completely different order, and it 
won't make one iota of difference to anyone. That assumption would 
become invalid.

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Re: [OSM-talk] maplint addr:

2009-04-17 Thread Lennard
Russ Nelson wrote:

 Maybe somebody (me) who lives in the US (me) should get a copy of the  
 code for keepright (me), put it up on their server (russnelson.com)  
 and start analyzing the US data?

That's been done for Australia as well, so I think this would be the 
right thing to do.

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Re: [OSM-talk] When will the next mapnik coastline update be?

2009-12-10 Thread Lennard
Peter Körner wrote:

 Yes, the processed_p is available from [1], where it is generated every 
 now an then (manual step). Then, it has to be updated at the osm mapnik 
 server, which, again, is a manual step.

This is not entirely true. The Coastline Error Checker runs through all 
the coastlines every every* night, generating a processed_p shapefile, 
but this version is not used by the OSM mapnik map. The latter generates 
its own coastline shapefile every time the full planet is reloaded, 
which happens on an infrequent schedule.

 So there are at least two people involved that are not working in an 
 planned time schedule (as nobody pays them for this, i think).
 
 Fortunately, the coastline doesn't change that often ;)

More often than you may think, as existing OSM data is refined, or sand 
suppletion or depletion is performed, either by nature or by man.

* When hypercube isn't down or otherwise slow, which is quite often 
these days.

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