<div dir="ltr"><div>Oi Gerald,<br><br>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.)<br>
<br></div><div>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.<br>
<br></div><div>Abraço,<br><br>Fernando<br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Dec 31, 2013 at 2:36 PM, Gerald Weber <span dir="ltr"><<a href="mailto:gweberbh@gmail.com" target="_blank">gweberbh@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Oi Fernando<div><br></div><div>em qual lista está sendo debatido isto? </div><div><br></div><div>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.</div>
<div><br></div><div>No meu entender o ideal é agrupar tudo que encaixa em unpaved (dirt,grass,sand,round etc) e fazer a renderização diferenciada.</div><div><br></div><div>Agora, se adicionar tracktype resolver a renderização diferenciada eu topo passar a usar como os australianos propõem.</div>
<div><br></div><div>abraço</div><div><br></div><div>Gerald </div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div class="h5">On 31 December 2013 14:10, Fernando Trebien <span dir="ltr"><<a href="mailto:fernando.trebien@gmail.com" target="_blank">fernando.trebien@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div>Hello everyone,<br><br></div><div>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?<br>
<br></div><div>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?<br>
<br></div><div></div><div>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.<br>
</div><div><div><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">davidbannon</b> <span dir="ltr"><<a href="mailto:notifications@github.com" target="_blank">notifications@github.com</a>></span><br>
Date: Tue, Dec 31, 2013 at 4:02 AM<br>Subject: Re: [openstreetmap-carto] Render paved/unpaved (#110)<br>To: gravitystorm/openstreetmap-carto <<a href="mailto:openstreetmap-carto@noreply.github.com" target="_blank">openstreetmap-carto@noreply.github.com</a>><br>
Cc: ftrebien <<a href="mailto:fernando.trebien@gmail.com" target="_blank">fernando.trebien@gmail.com</a>><br><br><br><p>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.</p>
<p>The Australian Tagging Guidelines on OSM discusses this ( <a href="http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines#Unsealed_and_4wd_Roads_.28Dirt.2C_Gravel.2C_Formed.2C_etc.29" target="_blank">http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines#Unsealed_and_4wd_Roads_.28Dirt.2C_Gravel.2C_Formed.2C_etc.29</a> ) and believes that any road with tracktype= asserted needs to be shown so people are aware its not a sealed road.</p>
<p>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.</p>
<p>David</p><div><div>
<p style="font-size:small;color:#666">—<br>Reply to this email directly or <a href="https://github.com/gravitystorm/openstreetmap-carto/issues/110#issuecomment-31385094" target="_blank">view it on GitHub</a>.<img src="https://github.com/notifications/beacon/3969479__eyJzY29wZSI6Ik5ld3NpZXM6QmVhY29uIiwiZXhwaXJlcyI6MTcwNDAwMjU0NSwiZGF0YSI6eyJpZCI6MTQ5MzU3NjR9fQ==--a72f3458a023172d934652cc11f9f5605b9de154.gif" height="1" width="1"></p>
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</font></span></div></div></div><span><font color="#888888"><br><br clear="all"><br>-- <br>Fernando Trebien<br><a href="tel:%2B55%20%2851%29%209962-5409" value="+555199625409" target="_blank">+55 (51) 9962-5409</a><br>
<br>"The speed of computer chips doubles every 18 months." (Moore's law)<br>"The speed of software halves every 18 months." (Gates' law)
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<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px">Dr. Gerald Weber</p>
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<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px">Departamento de Física/Universidade Federal de Minas Gerais</p><p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px">Department of Physics/Federal University of Minas Gerais</p>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Fernando Trebien<br>+55 (51) 9962-5409<br><br>"The speed of computer chips doubles every 18 months." (Moore's law)<br>"The speed of software halves every 18 months." (Gates' law)
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