Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Christoph Hormann
On Wednesday 09 July 2014, Daniel Koć wrote:
 [...] It's just my beginnings there, so
 I'll wait some time before saying anything conclusive, but for now
 I'm very surprised how the low hanging fruit can be not picked for so
 long without anybody noticing it, even if all the code is already
 waiting to be merged (
 https://github.com/gravitystorm/openstreetmap-carto/issues/705 ).

I can very much relate to that but this is not a matter that can be 
resolved easily.  Everyone has things he/she likes to change in the 
standard map style but good map design is something that very much 
needs good coordination for an harmonic overall appearance.  This is 
difficult in an open community approach.

My opinion is that the best approach would be to establish better means 
for people to create variants of the style and present them to a broad 
audicence.  This would have two effects - first it would allow changes 
to be tested more thoroughly making actual merging of changes into the 
main style less risky to break things and second it would help making 
the whole process more democratic since a change that is good and 
popular and already available to the community will put pressure on the 
style maintainers to integrate it.

Of course such a scenario would require quite significant ressources to 
implement, it would be a very worthy project for anyone looking for a 
specific area to support OSM monetarily.

Currently the main alternatives to the standard style are the region 
specific versions created by some local communities (like french and 
german).  Those however are quite specific in aim and are too different 
from the main style for things to easily be contributed back into the 
standard style.  Also these styles themselves are not really in open 
development.

 For me it tells us clearly that at least we should track such things
 better. If we made just a simple wiki table named Accepted
 propositions - rendering state with current comments from rendering
 team (done, todo - from when, wontfix - reasons, undecided -
 problems to be solved), it could help us connecting loose ends a
 lot! I can even do it myself, but I need to know it would be used at
 all. I don't know yet how big is the gap between default tagging and
 default rendering.

In general a good tagging scheme should stand alone and not be designed 
specifically for a certain rendering.  To this aim it is quite good not 
to have a too close connection between tagging and rendering.  A tag 
that contains useful and specific information can also be useful in 
rendering even if the actual way it is rendered is not considered 
during tag design.

 [...] I would rather include all such icons
 in general, because there was a reason somebody wrote it, a community
 consensus was established and it immediately promotes using such
 quality-approved tags. If we want to avoid the clutter (which is a
 noble aim in itself), don't try to avoid it altogether, but rather
 set the reasonable zoom threshold.

sigh

Fixed zoom threshold are one of the major problems of the current map 
style, they are selected to look fine for a certain area, usually the 
favorite city of the one making the style decision.  Choose a different 
area where the map scale is different or the geographic setting leads 
to a different distribution of POIs and things fall apart quickly.  

-- 
Christoph Hormann
http://www.imagico.de/

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Matthijs Melissen
Thanks for starting this discussion. Personally I think it makes sense
to define different types of peaks in the data. It would solve the
problem we have now, where tiny hillocks are rendered just like huge
mountains.

On 8 July 2014 15:14, SomeoneElse li...@mail.atownsend.org.uk wrote:
 The Proposed_features page seems confused about tagging and rendering
 though - given that local terrain height is available in most parts of the
 world from external sources, couldn't a map that wanted to suppress hillocks
 do so simply by comparing elevation with that?

That's not a particularly easy computation to calculate or define. I
think in this case, defining this in the tagging is fine.

 Also, the normal way to define OSM features is by going out and mapping
 them - so I'd go out and do that first, rather than worry about getting a
 proposal accepted.

For a consistent tagging scheme, I think it's much better to discuss
and define things first.

 OSM needs mappers far more than it needs proposal writers.

I strongly disagree with that.

-- Matthijs

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Matthijs Melissen
On 9 July 2014 00:05, Daniel Koć dan...@xn--ko-wla.pl wrote:
 W dniu 08.07.2014 20:04, yvecai napisał(a):
 However, if rendering is an interesting topic, wiki is full of
 rendering examples and advices that aren't followed anywhere. Let the

 You don't even realize how sad is this observation for me...

 What is the role of writing documentation than - and approving it or
 declining? You can always use the tags as you like it, and they will be
 rendered this way or another (or not a all), so why waste the time proposing
 and documenting?

I think it's best to think of it as a two step process: first propose
the tags that describe the reality (here), then propose how they
should be rendered (on the openstreetmap-carto Github).

That said, I also don't have problems with a rendering paragraph in
the proposal - as long as it's clear that it's meant as illustration
of the proposal, and not (directly) as a proposal to change existing
rendering.

Both tagging and rendering discussions are already difficult enough as
they are - separation of concern simplifies the discussion (also, some
people are only interested in rendering and others only in tagging).

I think your rendering proposal makes sense by the way, but as I said,
it's a two step process. Tagging and rendering decisions can (and
should) be made independent.

 But inside the project I think we need some more coherency. If there's an
 approved proposal with rendering hints, at least the default render should
 take it into account.

I don't think that's necessary, see above.

 And I see the difference in scale of peaks type, which should
 be properly visualised to not make default map cluttered with unnecessary
 details (like https://github.com/gravitystorm/openstreetmap-carto/issues/689
 ).

Yes, I agree this needs to be solved.

-- Matthijs

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Matthijs Melissen
On 9 July 2014 02:56, Daniel Koć dan...@xn--ko-wla.pl wrote:
 but for now I'm very surprised how the
 low hanging fruit can be not picked for so long without anybody noticing it,
 even if all the code is already waiting to be merged (
 https://github.com/gravitystorm/openstreetmap-carto/issues/705 ).

Two reasons. First, we are trying to clean up current problems with
the style sheet first, rather than adding new features. Also,
development of the stylesheet has been put on hold for like four
years, so there is still quite a large backlog. Second, sometimes
things seem easy, while they are not. In the case of fountains, do we
really want an icon for every fountain? What about a tiny fountain in
someones garden? A small ventilation fountain in a pond? Even for
slightly larger public fountains, an icon might attract more attention
than it deserved.

 For me it tells us clearly that at least we should track such things better.
 If we made just a simple wiki table named Accepted propositions - rendering
 state with current comments from rendering team (done, todo - from
 when, wontfix - reasons, undecided - problems to be solved), it could
 help us connecting loose ends a lot! I can even do it myself, but I need to
 know it would be used at all. I don't know yet how big is the gap between
 default tagging and default rendering.

First of all, we are past the state where every tag can be rendered.
For example, I believe that fire hydrants are an officially accepted
tag. That doesn't mean that we should render them on
openstreetmap-carto. Same thing for underground cables, etc.

However, if you could create a table on the wiki that links accepted
features to their Github id (if existing), that would be helpful, I
think. But as I said, the focus at the moment is not on adding
features - but that might change in a couple of months. By the way,
the number of features officially accepted is surprisingly small. For
example, there are only about 5 officially accepted shop types (but
much more implicitly accepted ones, of course).

 the remark about the carto not
 being made for all the POI icons was against my intuition.

If I understand Andy correctly, he exaggerated a bit in order to
direct developer effort towards fixing the features we currently have,
rather than adding new features. As I said, we started with quite a
mess (and some areas of the code still are, although it's much better
than two years ago), it's better to fix these first before adding new
stuff to the mess.

 I would fully
 agree if that meant simply there's more to rendering than POI's, but I'm
 not sure. I would rather include all such icons in general, because there
 was a reason somebody wrote it, a community consensus was established and it
 immediately promotes using such quality-approved tags. If we want to avoid
 the clutter (which is a noble aim in itself), don't try to avoid it
 altogether, but rather set the reasonable zoom threshold.

I don't think for example fire hydrants should be rendered at any zoom level.

About which POI to render and which not, see also the discussion I
tried to start here:
https://github.com/gravitystorm/openstreetmap-carto/issues/660

-- Matthijs

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Martin Koppenhoefer
2014-07-09 13:39 GMT+02:00 Christoph Hormann chris_horm...@gmx.de:

 In general a good tagging scheme should stand alone and not be designed
 specifically for a certain rendering.  To this aim it is quite good not
 to have a too close connection between tagging and rendering.



+1. These are really two different aspects, because the tagging has the aim
to give a short, detailed, precise, specific description of something (and
so allows distinction from something different). Rendering instead tries to
show what might be interesting for a given context (i.e. it will be a
selection and generalization of all the information contained in the db).
There is only one tagging/mapping db, but there are infinite rendering dbs.

cheers,
Martin
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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Daniel Koć

W dniu 09.07.2014 17:01, Martin Koppenhoefer napisał(a):


+1. These are really two different aspects, because the tagging has
the aim to give a short, detailed, precise, specific description of
something (and so allows distinction from something different).


And then sometimes you end up with rendering problem because of lack of 
enough distinction in the tagging (they are by your definition not what 
they really should be), and what than? I would get back to tagging 
studio and think if this visual distinction is not a symptom of a more 
fundamental difference, which should be seen in tagging. And you?



Rendering instead tries to show what might be interesting for a given
context (i.e. it will be a selection and generalization of all the
information contained in the db). There is only one tagging/mapping
db, but there are infinite rendering dbs.


That's true for many themed maps, where the context is king, but I 
talk only about default one. And there are also many wild tags out there 
(and I don't touch them), but only one default set, and it is what I 
want to talk about. This set is not too big, yet the default map doesn't 
show all these default tags. I feel it's a bad quirk.


--
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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-09 Thread Martin Koppenhoefer
2014-07-09 18:51 GMT+02:00 Daniel Koć dan...@xn--ko-wla.pl:

 And then sometimes you end up with rendering problem because of lack of
 enough distinction in the tagging (they are by your definition not what
 they really should be), and what than? I would get back to tagging studio
 and think if this visual distinction is not a symptom of a more fundamental
 difference, which should be seen in tagging. And you?



Yes, I also find a lot of such situations where there aren't yet tags for
details I'd like to convey or even whole object classes missing. I often
write proposals and hope that others catch them (e.g. amenity=monastery is
one of these, where before many mappers insisted that tagging them as
place_of_worship would suffice but now it seems that the tag gets used also
by others).




  Rendering instead tries to show what might be interesting for a given
 context (i.e. it will be a selection and generalization of all the
 information contained in the db). There is only one tagging/mapping
 db, but there are infinite rendering dbs.


 That's true for many themed maps, where the context is king, but I talk
 only about default one. And there are also many wild tags out there (and I
 don't touch them), but only one default set, and it is what I want to
 talk about. This set is not too big, yet the default map doesn't show all
 these default tags. I feel it's a bad quirk.



there was some pause with the main stylesheet until last year, but now
there is great activity and a lot of things get touched (and amended). Be
confident, the main style is improving rapidly and open to everyone to
create pull requests.

cheers,
Martin
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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Martin Koppenhoefer
2014-07-08 15:59 GMT+02:00 Daniel Koć dan...@xn--ko-wla.pl:

 I just made the proposal page for discussion about enhancing natural=peak
 tag:

 http://wiki.openstreetmap.org/wiki/Proposed_features/peak

 This is my first attempt to define OSM features.



I am not sure this is something we'd want in OSM for at least 2 reasons:

1. As you (and wikipedia) write, there is no clear distinction between
mountain and hill, so this is subjective (you write it in the proposal)

2. The analysis of the other peaks in the area and the topography in
general can be done automatically both, based on OSM data and on additional
elevation data (like from hgt rasters, Aster, SRTM, other DEMs, etc.)

So this is probably not something we'd have to map manually, as it could be
automatically derived. I agree that the current rendering is not always
optimal, but this could be resolved in the rendering system, no need to do
it in the base data. Or maybe I got you wrong?

Cheers,
Martin
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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread fly
Am 08.07.2014 17:06, schrieb Martin Koppenhoefer:
 
 2014-07-08 15:59 GMT+02:00 Daniel Koć dan...@xn--ko-wla.pl
 mailto:dan...@xn--ko-wla.pl:
 
 I just made the proposal page for discussion about enhancing
 natural=peak tag:
 
 http://wiki.openstreetmap.org/__wiki/Proposed_features/peak
 http://wiki.openstreetmap.org/wiki/Proposed_features/peak
 
 This is my first attempt to define OSM features.
 
 
 
 I am not sure this is something we'd want in OSM for at least 2 reasons:
 
 1. As you (and wikipedia) write, there is no clear distinction between
 mountain and hill, so this is subjective (you write it in the proposal)
 
 2. The analysis of the other peaks in the area and the topography in
 general can be done automatically both, based on OSM data and on
 additional elevation data (like from hgt rasters, Aster, SRTM, other
 DEMs, etc.)
 
 So this is probably not something we'd have to map manually, as it could
 be automatically derived. I agree that the current rendering is not
 always optimal, but this could be resolved in the rendering system, no
 need to do it in the base data. Or maybe I got you wrong?


If you really want to get some useful information in the data you could
have a look at topographic prominence [1] and isolation [2] (german page
is much better). Though, Martin is right that this information could be
automatically calculated.

Cheers fly

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread fly
Am 08.07.2014 17:52, schrieb fly:
 Am 08.07.2014 17:06, schrieb Martin Koppenhoefer:

 2014-07-08 15:59 GMT+02:00 Daniel Koć dan...@xn--ko-wla.pl
 mailto:dan...@xn--ko-wla.pl:

 I just made the proposal page for discussion about enhancing
 natural=peak tag:

 http://wiki.openstreetmap.org/__wiki/Proposed_features/peak
 http://wiki.openstreetmap.org/wiki/Proposed_features/peak

 This is my first attempt to define OSM features.



 I am not sure this is something we'd want in OSM for at least 2 reasons:

 1. As you (and wikipedia) write, there is no clear distinction between
 mountain and hill, so this is subjective (you write it in the proposal)

 2. The analysis of the other peaks in the area and the topography in
 general can be done automatically both, based on OSM data and on
 additional elevation data (like from hgt rasters, Aster, SRTM, other
 DEMs, etc.)

 So this is probably not something we'd have to map manually, as it could
 be automatically derived. I agree that the current rendering is not
 always optimal, but this could be resolved in the rendering system, no
 need to do it in the base data. Or maybe I got you wrong?
 
 
 If you really want to get some useful information in the data you could
 have a look at topographic prominence [1] and isolation [2] (german page
 is much better). Though, Martin is right that this information could be
 automatically calculated.
 
 Cheers fly
 

Sorry forgot the links:

[1] https://en.wikipedia.org/wiki/Topographic_prominence
[2] https://en.wikipedia.org/wiki/Topographic_isolation

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Daniel Koć

W dniu 08.07.2014 16:14, SomeoneElse napisał(a):


Currently taginfo suggests almost no usage of peak like this

http://taginfo.openstreetmap.org/keys/peak#values


Yes, but that's exactly where the problem is: I think people are simply 
cheating now. =} They see no other peak tags in wiki, so they use just 
the one they see. Using natural=peak almost everywhere instead of 
man_made=peak, when that would be the most reasonable way to tag, make 
me think this way.



and see also:

http://taginfo.openstreetmap.org/tags/natural=peak#combinations


There's nothing interesting IMHO - name, ele etc. are all OK, but they 
don't help with the problem.



The Proposed_features page seems confused about tagging and
rendering though - given that local terrain height is available in
most parts of the world from external sources, couldn't a map that
wanted to suppress hillocks do so simply by comparing elevation with
that?  I'm not sure why you'd need to tag the height of things around
thing A on thing A itself.


I think tagging, documentation and rendering are somehow intertwined. 
That's why people are cheating. It's very tempting to have peak visible 
through natural=peak even if you know for sure it's not natural.


So let's look the other way: why we tag the mountain peaks, in the first 
place, if it's even more simple to identify them by comparing elevation 
than hills and hillocks?


Additional (general) problem is we have poor terrain representation. On 
the main page only the OpenCycleMap has this kind of data visible, but 
from what I saw it's effective only for high mountains. For micromapping 
it just doesn't work at all.



Also, the normal way to define OSM features is by going out and
mapping them - so I'd go out and do that first, rather than worry
about getting a proposal accepted.


I'm not that worried - if people won't accept it, it just won't be 
accepted and I can live with that: maybe I am totally wrong or that is 
not the best way of dealing with my problem? Go and tell me!


What worries me more is that I don't really know how to clearly show how 
complex this problem is. It's not only about tagging documentation, but 
also good elevation/shading background, tags rendering and people 
behavior. There may be even more! =}



start from here if I were you) but it's not meant to be - OSM needs
mappers far more than it needs proposal writers.  If you think that
it's important to classify a natural=peak as a hillock go and have a
look at it, and if it looks like a hillock to you, tag it as one!


Well, I am the active mapper for years now =} , but that's the wall I 
hit when micromapping and I try to fix it. I see this proposal as the 
next level of scratching my itch, not leaving the base work.


--
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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Christoph Hormann
On Tuesday 08 July 2014, fly wrote:

 Sorry forgot the links:

 [1] https://en.wikipedia.org/wiki/Topographic_prominence
 [2] https://en.wikipedia.org/wiki/Topographic_isolation

http://wiki.openstreetmap.org/wiki/Proposed_features/key:prominence

This can be calculated automatically in principle but doing this in the 
general case is very expensive so it would make sense to record this 
information in the database.

-- 
Christoph Hormann
http://www.imagico.de/

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread yvecai

Calculating relief features from a DEM is doable. Naming them is not.


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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread yvecai

This proposal is not a bad idea: refining an existing tag can't do no harm.

However, if rendering is an interesting topic, wiki is full of rendering 
examples and advices that aren't followed anywhere. Let the renderer 
render and the cartographer style the map, and trust them to understand 
tags of interest to them.


Yves

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Daniel Koć

W dniu 08.07.2014 18:50, Martin Koppenhoefer napisał(a):


the tag, i.e. I would deliberately choose natural=peak for all kind of
peaks and hilltops regardless their (geological) history. If someone
took off some stones from a natural peak it would become a man made
peak for you and you'd tag it differently?


Well, exactly! =}}}

And it's not just me - they are also important all over the world and 
have many purposes for quite a long time:


http://wiki.openstreetmap.org/wiki/Tag:man_made%3Dcairn
https://en.wikipedia.org/wiki/Cairn

Moreover, mounds are artificial (man/aliens made? =} ) peaks by 
definition:


A mound is an artificial heaped pile of earth, gravel, sand, rocks, or 
debris.


[ https://en.wikipedia.org/wiki/Mound ]

***

The natural/man_made dilemma looks silly on the surface, but is very 
deep rooted.


We started with some general, light-weight ontology, which was enough 
for the beginning. But now we are no more just the OpenStreetMap, 
rather (The)OpenWorldMap. We got used to some old habits - like the 
very name of the project - but some cracks start appearing here and 
there. We just keep extending some tags just by historical reasons, not 
their merits (highway=bus_stop anyone?...), but it doesn't have to 
stay that way forever (public_transport=* namespace!).


If I was to define peak now, I would start with terrain=peak, and then 
add descent=natural or descent=artificial to narrow it down when 
needed.


Sorry for such a big vision, but this list description allows us to talk 
about tag strategy. =}


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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Daniel Koć

W dniu 08.07.2014 20:25, Martin Koppenhoefer napisał(a):


I agree, man_made=mound isn't a bad idea.


Great, feel free to make such amendments!

My original proposition is rather wide, since I'm not familiar with many 
types of terrain objects and don't want to pretend I get the whole 
picture. Discussion about it learns me something.



I wouldn't question all peaks and require a subtag like
descent=natural for what can and has in the past sufficiently been
described with natual=peak. If there are a few mounds between the
currently tagged objects, you can always retag those few, but
retagging all peaks because there are some questionable ones between
them is not a good idea (IMHO).


I wrote about how it should be done right, while you talk about problems 
with changing what we have now, and that's a bit different question. I 
don't know how far we should go to make these whole terrain matters 
sane, but if we feel it really needs serious surgery, than the 
transition problems will arise inevitably. They are one of the main 
reasons why we have historical luggage at all (the other one is people 
getting used to some quirks).


If we would plan this transition, there are few possible strategies to 
take:


1. Convert all natural=peak into terrain=peak+descent=natural, 
because this is the most accurate and conservative tag translation.


2. Convert all natural=peak into terrain=peak and leave the 
descent key to be filled later, because we're not sure what the peak 
descent really is, as the natural namespace was already 
overloaded/abused (that is the strategy I would choose).


3. Don't convert anything, since we know this is important tag and a 
rendering implementation will lag - just add a new tag to the previous 
one. Then we could also overuse existing top-level natural=peak and 
man_made=peak instead of (IMHO better) lower-level descent=* key.


4. Convert all natural=peak into natural=terrain+terrain=peak and 
also define man_made=terrain or allow a little strange tagging: 
natural=terrain+terrain=peak+descent=artificial.


So we have many ways to resolve this. But I'm more interested in 
rethinking actual state of things as much, as it's possible, and only 
than think about how to make it technically. I know terrain in OSM is a 
broad topic, but I think it's time to touch it at least. Tagging it will 
be just the outcome of the choosing the right mental model.



I have tagged many of them with historic=tomb and tomb=tumulus (and
eventually also with building=tumulus) but they can also be considered
mounds.


Hm, not all the mounds are tombs.

***

BTW: Did you know the http://openworldmap.org leads to 
http://openstreetmap.org? Looks like I was not the first who thinks 
about better name of the current project. =} However 
http://openworldmap.com/ is some crazy commercial entity using OSM 
data...


--
Mambałaga


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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Daniel Koć

W dniu 08.07.2014 20:04, yvecai napisał(a):


However, if rendering is an interesting topic, wiki is full of
rendering examples and advices that aren't followed anywhere. Let the


You don't even realize how sad is this observation for me...

What is the role of writing documentation than - and approving it or 
declining? You can always use the tags as you like it, and they will be 
rendered this way or another (or not a all), so why waste the time 
proposing and documenting?



renderer render and the cartographer style the map, and trust them to
understand tags of interest to them.


You have no choice but to trust external rendering services - they will 
do what they think is important anyway. And we show this trust by OSM 
license.


But inside the project I think we need some more coherency. If there's 
an approved proposal with rendering hints, at least the default render 
should take it into account. Ideally I think all such features should be 
rendered - and if not, the documentation should be revised by rendering 
team explaining what is the problem. Eventually the consensus can be 
reached. Otherwise, if OSM is basically the GIS database, why the main 
project page has the map instead of big red Download the data! button?


In my case it was as simple as taking the template and filling it up. 
Rendering section in this template (and the field in the proposition 
infobox) means it's not unusual that the tagging can have rendering 
implications. And I see the difference in scale of peaks type, which 
should be properly visualised to not make default map cluttered with 
unnecessary details (like 
https://github.com/gravitystorm/openstreetmap-carto/issues/689 ). But I 
just gave rough idea - the rendering team may feel some other settings 
would be better.


--
Mambałaga

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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread John Packer
Daniel, I don't know about standardization of rendering, but I would say
the advice on the wiki is followed by OSM mappers much more often than some
veterans think.



2014-07-08 20:05 GMT-03:00 Daniel Koć dan...@xn--ko-wla.pl:

 W dniu 08.07.2014 20:04, yvecai napisał(a):


  However, if rendering is an interesting topic, wiki is full of
 rendering examples and advices that aren't followed anywhere. Let the


 You don't even realize how sad is this observation for me...

 What is the role of writing documentation than - and approving it or
 declining? You can always use the tags as you like it, and they will be
 rendered this way or another (or not a all), so why waste the time
 proposing and documenting?


  renderer render and the cartographer style the map, and trust them to
 understand tags of interest to them.


 You have no choice but to trust external rendering services - they will do
 what they think is important anyway. And we show this trust by OSM license.

 But inside the project I think we need some more coherency. If there's an
 approved proposal with rendering hints, at least the default render should
 take it into account. Ideally I think all such features should be rendered
 - and if not, the documentation should be revised by rendering team
 explaining what is the problem. Eventually the consensus can be reached.
 Otherwise, if OSM is basically the GIS database, why the main project page
 has the map instead of big red Download the data! button?

 In my case it was as simple as taking the template and filling it up.
 Rendering section in this template (and the field in the proposition
 infobox) means it's not unusual that the tagging can have rendering
 implications. And I see the difference in scale of peaks type, which should
 be properly visualised to not make default map cluttered with unnecessary
 details (like https://github.com/gravitystorm/openstreetmap-
 carto/issues/689 ). But I just gave rough idea - the rendering team may
 feel some other settings would be better.

 --
 Mambałaga


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Re: [Tagging] Feature Proposal - RFC - Enhancing natural=peak tag

2014-07-08 Thread Daniel Koć

W dniu 09.07.2014 2:56, John Packer napisał(a):

Daniel, I don't know about standardization of rendering, but I would
say the advice on the wiki is followed by OSM mappers much more often
than some veterans think.


Still there are some notable cases when they're not. I wouldn't be 
interested in rendering now if I didn't have my favorite problems with 
it lasting for months or years, even those easy to fix. That includes 
fountains and at least rudimentary public_transport namespace 
representation - these are just examples I personally need and it 
wouldn't hurt anyone.


I try not to be overly negative with it (no matter how irritated I feel 
sometimes as a mapper =} ) and go the positive way, so I get involved in 
openstreetmap-carto. It's just my beginnings there, so I'll wait some 
time before saying anything conclusive, but for now I'm very surprised 
how the low hanging fruit can be not picked for so long without anybody 
noticing it, even if all the code is already waiting to be merged ( 
https://github.com/gravitystorm/openstreetmap-carto/issues/705 ).


For me it tells us clearly that at least we should track such things 
better. If we made just a simple wiki table named Accepted propositions 
- rendering state with current comments from rendering team (done, 
todo - from when, wontfix - reasons, undecided - problems to be 
solved), it could help us connecting loose ends a lot! I can even do it 
myself, but I need to know it would be used at all. I don't know yet how 
big is the gap between default tagging and default rendering.


Yesterday I have watched Andy's workshop ( 
http://blog.gravitystorm.co.uk/2014/07/07/openstreetmap-carto-workshop/ 
) and while it was very interesting for me, the remark about the carto 
not being made for all the POI icons was against my intuition. I would 
fully agree if that meant simply there's more to rendering than POI's, 
but I'm not sure. I would rather include all such icons in general, 
because there was a reason somebody wrote it, a community consensus was 
established and it immediately promotes using such quality-approved 
tags. If we want to avoid the clutter (which is a noble aim in itself), 
don't try to avoid it altogether, but rather set the reasonable zoom 
threshold.


I hope these are things we can fix soon, but for now some visible 
problems are still unresolved.


--
Mambałaga

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