Oi Gerald, Estou jogando o assunto pra lista tagging primeiramente (pra ter certeza de que o "significado" das tags é exatamente o que queremos capturar). Acho que depois passaria pela lista design e por fim (quando já tiver um protótipo funcional) o assunto seria com os designers do estilo Carto, no Github. Até então, o assunto começou como um registro de incidente no Github do Carto, daí alguém me respondeu em privado como instalar o software pra começar a fazer testes e daí alguém respondeu a essa conversa privada com essa informação sobre a tag tracktype. (Toda a conversa privada vem no fim da mensagem.)
A sugestão me surpreendeu da mesma forma que surpreendeu a você, e penso da mesma forma que você sobre os casos em que surface afetaria a renderização e também quanto à idéia de passar a usar tracktype (e sugeri-la pros demais) se isso resolver o problema da renderização dessas vias. Minha dúvida agora é se essa prática dos australianos já "saiu da Austrália" (se a idéia já passou por outros olhos), por isso passei adiante pra lista tagging. Abraço, Fernando On Tue, Dec 31, 2013 at 2:36 PM, Gerald Weber <[email protected]> wrote: > Oi Fernando > > em qual lista está sendo debatido isto? > > tracktype é interessante, mas eu julgava que seria somente para > highway=track como o nome sugere. Além disto requer uma vistoria para > realmente saber em qual categoria encaixar. > > No meu entender o ideal é agrupar tudo que encaixa em unpaved > (dirt,grass,sand,round etc) e fazer a renderização diferenciada. > > Agora, se adicionar tracktype resolver a renderização diferenciada eu topo > passar a usar como os australianos propõem. > > abraço > > Gerald > > > On 31 December 2013 14:10, Fernando Trebien <[email protected]>wrote: > >> Hello everyone, >> >> I've been interested in proposing a change to Carto's style (Mapnik's >> main style) to allow visual identification of unpaved roads for any kind of >> road, much like the Humanitarian style does, which bases this decision on >> values of the surface tag. The Brazilian community has shown interest on >> this many times, since lack of this feature causes unaware users to >> classify roads incorrectly. David Bannon proposes (below) that we use the >> tracktype tag for that instead, but I've never seen it being used for >> anything besides roads with highway=track (therefore, not a very common >> practice it seems). Do you think we should encourage its use in conjunction >> with unclassified, tertiary, secondary and primary highways? >> >> It seems to me that surface=compacted is quite similar in meaning to >> tracktype=grade1 (whereas surface=sand, surface=dirt, and others, could be >> equated with other grades but rarely with grade1, particularly because the >> "compacted" value exists) and so both tags could be used for the same >> rendering purpose. Do you agree? >> >> I've seen people from different countries requesting different things on >> this topic: some would consider even a sett street "unpaved" (therefore, >> requiring special rendering), but it seems that a "compacted unpaved" road >> is the limit with which few would disagree. Finding the right universal >> threshold (if there is only one) is still pretty much debatable, so >> opinions are appreciated. >> >> ---------- Forwarded message ---------- >> From: davidbannon <[email protected]> >> Date: Tue, Dec 31, 2013 at 4:02 AM >> Subject: Re: [openstreetmap-carto] Render paved/unpaved (#110) >> To: gravitystorm/openstreetmap-carto < >> [email protected]> >> Cc: ftrebien <[email protected]> >> >> >> I am not sure the tag surface= is the right one here. It has a lot of >> possible values, and a lot of them in use. We'd need a look up table to >> decide what to do. Better, in my humble opinion to use the tracktype= tag. >> This tag is intended to show what state the road is likely to be in and >> thats the information a user really needs. Further, this tag is very widely >> used. >> >> The Australian Tagging Guidelines on OSM discusses this ( >> http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines#Unsealed_and_4wd_Roads_.28Dirt.2C_Gravel.2C_Formed.2C_etc.29) >> and believes that any road with tracktype= asserted needs to be shown so >> people are aware its not a sealed road. >> >> Please remember that highway= type tags should show what a road is is >> intended for, further information is needed if the surface of that road is >> not what might be expected ! This is particularly important in places like >> the Australian Outback where long distances are involved. Many people have >> died as a result of them underestimating their ability to use a particular >> road. I don't want to see OSM mentioned in a coroners report. >> >> David >> >> — >> Reply to this email directly or view it on >> GitHub<https://github.com/gravitystorm/openstreetmap-carto/issues/110#issuecomment-31385094> >> . >> >> >> >> -- >> Fernando Trebien >> +55 (51) 9962-5409 >> >> "The speed of computer chips doubles every 18 months." (Moore's law) >> "The speed of software halves every 18 months." (Gates' law) >> >> _______________________________________________ >> Talk-br mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/talk-br >> >> > > > -- > > Dr. Gerald Weber > > [email protected] > > Personal website <https://sites.google.com/site/geraldweberufmg/> > > > Departamento de Física/Universidade Federal de Minas Gerais > > Department of Physics/Federal University of Minas Gerais > > Campus da Pampulha > > Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil > > mobile: +55-(0)31-96462277 (mudou/changed 02/07/2013) > > _______________________________________________ > Talk-br mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-br > > -- Fernando Trebien +55 (51) 9962-5409 "The speed of computer chips doubles every 18 months." (Moore's law) "The speed of software halves every 18 months." (Gates' law)
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