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Porting some french-style solutions [meta-issue] #1402

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19 of 28 tasks
kocio-pl opened this issue Mar 18, 2015 · 42 comments
Closed
19 of 28 tasks

Porting some french-style solutions [meta-issue] #1402

kocio-pl opened this issue Mar 18, 2015 · 42 comments

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@kocio-pl
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kocio-pl commented Mar 18, 2015

I'd like to have multiple French-style ( http://tile.openstreetmap.fr/ ) solutions, which I consider good, in the osm-carto. I don't know if that's always technically feasible, because I'm not sure what infrastructure are they using ( https://github.com/osm-fr/layers-mapnik-styles maybe?) and if the license is compatible, but maybe sometimes it would be just simple code porting. We already have French-style tree rendering issue ( #978 ), so I want more of their good stuff.

This should be cut into specific issues eventually, but here we can identify them at general level and make early decisions before flooding the board with multiple issues.

I. Low zoom level

  • 1. At z3 there could be continents and country labels with some large natural areas like sands/forests/ice in the background
  • 2. At z4 the same as z3, but with rather strong national borders (still not perfect, but visible better than currently in osm-carto, where it's cluttered with states borders), black dots for capitals and some big islands names
  • 3. At z5 the same as z4, and more: all the countries (borders+name) with geographical features, capitals are bolded and some bigger cities are visible too, plus there are subdivisions visible (in some countries borders are visible, in some other just the states names)
  • 4. At z6 the same as z5, but no more country names, more cities and some states visible (maybe we could try put more states with their capitals instead of smaller cities - boundary=administrative, admin_level=4 labels obscures place=city labels #1391)
  • 5. The country and state labels are smartly placed (text-label-position-tolerance), so they don't overlap city labels - especially capitals

II. Middle/high zoom level

III. High zoom level

POI icons we could use:

@pnorman
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pnorman commented Mar 18, 2015

I don't know if that's always technically feasible, because I'm not sure what infrastructure are they using ( https://github.com/osm-fr/layers-mapnik-styles maybe?)

https://github.com/cquest/osmfr-cartocss

if the license is compatible,
Yes, we're both using CC0

The main technical difference is they have a database with hstore, which we don't have yet.

@pnorman
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pnorman commented Mar 18, 2015

cc @cquest

It would be nice if we could pull commits from one project to the other. Don't know if it's feasible. For reference, the diffstats are +10k -5k one way and +18k/-2k.

@cquest
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cquest commented Mar 18, 2015

Pick all the cherries you want ;)

When I forked and started add my own stuff, I was not familiar with git.
I'm a bit more now but not an expert.

For the low level zooms, I'm planning to rework on it, to speed up
rendering.
I'm not using natural earth data or any other data, only OSM one.
I'm also using a pre-rendered landcover tiff rendered at zoom 8 and down
sampled for zoom 0-7.

Le 18/03/2015 19:17, Paul Norman a écrit :

I don't know if that's always technically feasible, because I'm
not sure what infrastructure are they using (
https://github.com/osm-fr/layers-mapnik-styles maybe?)

https://github.com/cquest/osmfr-cartocss

if the license is compatible,
Yes, we're both using CC0

The main technical difference is they have a database with hstore,
which we don't have yet.


Reply to this email directly or view it on GitHub
#1402 (comment).

Christian Quest - OpenStreetMap France

@nebulon42
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Regarding introducing new SVG shop icons (if desired) I think we should not add new SVG icons that are not pixel-aligned. And I don't say this because I would want to design all of them myself.

I'm also not sure if "flooding in" new shop icon tickets will increase the likelihood of them being introduced, just a thought.

@pnorman
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pnorman commented Mar 18, 2015

We added generic shop icons to avoid having to add new icons for every shop. I'm considering if the 16 new issues should be closed.

@kocio-pl
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@nebulon42: My feeling is that they are good enough for me on French OSM (I don't know if they are pixel-aligned so call it a blind test of quality), so I prefer having them as they are and then correcting/replacing if not satisfactory for anyone else.

@kocio-pl
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@pnorman: I thought generic icon was introduced to avoid giving too high visibility to "not correct" shop types and make mappers try harder than "shop=yes/whatever" and I consider it smart move.

But what is the real problem with adding more (even "correct") icons? Is it purely technical, political or practical maybe?

@matthijsmelissen
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We added generic shop icons to avoid having to add new icons for every shop. I'm considering if the 16 new issues should be closed.

Personally I would be happy with adding more icons. I have never fully understood the argument against adding more icons, but maybe @pnorman or @gravitystorm can repeat the argument once more (perhaps in #660).

By the way, I think this topic is very useful, thanks @kocio-pl for opening it!

@matkoniecz
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I also would be happy with adding new, clearly recognizable icons for popular shops (2000+ uses) that are well defined without tagging conflicts (no icons for shop=seafood and shop=fishmonger) and have a definition on wiki.

@kocio-pl
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@nebulon42:

I'm also not sure if "flooding in" new shop icon tickets will increase the likelihood of them being introduced, just a thought.

Why so cautious? I also don't think it would at all!

Please don't treat me like project spammer or what. It was only having the icons that are ready to be used which made me think it's worth creating all the tickets. I really appreciate the time of developers spent on making rendering better (including you!), so I try to open the tickets only when I'm sure there are strong merits to do so. And this one was no other - just incidentally this time I had a lot of such (IMO!) strong cases. The number is irrelevant here, only the justification.

Maybe I made it too fast - sorry - but after @pnorman said no single word against them and @cquest gave us the green light, I thought now we're on a safe ground. So I cherry picked all the low hanging fruits.

@nebulon42
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Relax, I didn't say anything about Spam.

@dieterdreist
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2015-03-19 0:28 GMT+01:00 math1985 [email protected]:

Personally I would be happy with adding more icons. I have never fully
understood the argument against adding more icons

I agree. I believe the reluctance towards adding more icons is grounded in
the idea to possibly add a legend for every signature and every icon, and
the more you have, the more improbable this gets (or simply unclear). I
believe those shop icons can be designed in a way that they are understood
alone by their iconography (the colour tells you it is a shop, and the icon
tells of what type).

@kocio-pl
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The legend in itself is very basic. Even the features included there - like areas - are hard to recognize, since they are presented only as a color bar with no important details (trees in the forest, dashing in allotments). Some other features like parkings, single trees, bollards, gates or proposed highways are just absent. The same for any font style.

As of now we also don't have any icon in the legend (railway station and peak being the only exceptions), so nothing new - no matter how many do we render, we already depend entirely on their recognizability.

@nebulon42
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I have icons for another 8 popular shop types ready. But before proposing PRs I'd like to have the green light from maintainers that this will be probably considered for merge as there seem to be 2 in favour, 2 against additional shop icons. There have been two additional shop icons lately and one being currently proposed. Shall I go ahead with this?

@kocio-pl
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I'd rather say 3-5 in favour: 3 for sure (me, @math1985, @matkoniecz), 2 most probably (@dieterdreist and you, I guess =} ). But still the simple voting count is of no use if @gravitystorm alone would oppose - that would be 3-5 vs infinity probably. ;-)

@matthijsmelissen
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Indeed, this is not a democracy, and I'd prefer if decisions were based on convincing arguments rather than vote counts.

It's a shame @gravitystorm has not had time so far to join this discussion.

@pnorman
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pnorman commented Mar 23, 2015

What problems do you mean?

Generally they're too detailed.

@kocio-pl
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The legend in itself is very basic.

BTW: somebody wants to work it out.

@kocio-pl
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User Wuzzy really pulled up and now there's a Wiki page for standard tile layer. It is not complete yet, but I guess we should use them as a simple documentation for what osm-carto does render and probably mention it in the Readme. More informations can be found in this message on a general Talk list.

@nebulon42
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@kocio-pl: Could you please update your list and cross out things that have been done already? This would make it easier to see what is still open.

@kocio-pl
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Sure - I guess I've checked all resolved (or mostly resolved, as shop=beverages is still below 10k uses and I don't think it's that important) items.

@kocio-pl
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Do we plan to touch any issues I mentioned here other than just icons (namely I. Low zoom level and II. Middle/high zoom level) or they are too broad or we have any other problem with them?

@matthijsmelissen
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As far as I'm concerned we could leave the issue open.

@HolgerJeromin
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the lines on sport pitches (#1126) could be added to the list.

@kocio-pl
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Thanks, I added it and some checkers too. I thought nobody else is interested, since there was no discussion on those "other" topics, but if we don't give up the idea, I'm happy to keep those things open and track the progress.

Given that @cquest is following and open for code migration, we can discuss some details with him, but first we should decide what we want to have at all, what could be done first and what we want to be done differently.

@matthijsmelissen
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I'm interested (but lack spare time to actively work on it at the moment).

@pnorman
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pnorman commented Jun 29, 2015

Thinking about it, with the french style using a JSON MML and us using YAML, moving code over is basically impossible, as we'd need to rewrite any layers

@kocio-pl
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Code porting can be a problem then, but we can still use some of their ideas if we like them or just take the inspiration. I was surprised nobody commented their rendering for a start.

@kocio-pl
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@cquest

For the low level zooms, I'm planning to rework on it, to speed up rendering.

This is interesting for me, as I'd like to take care of low levels here. What is the current state of this idea?

@cquest
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cquest commented Aug 18, 2015

I've paused on working on the french style for the moment.
I'm currently more focused on switching to vector tiles and experimenting in that area with some light vector tile server to see the impact on rendering.

@kocio-pl
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This is also interesting thing for me. 😄 If you will have some links to try or even half-baked conclusions, I would be happy to hear about it too.

@kocio-pl
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Some more interesting features may be found in a special guide.

@kocio-pl
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kocio-pl commented Jan 2, 2017

There are some new changes in French style, in case anybody is interested:

https://cquest.hackpad.com/Rendu-OpenStreetMap-FR-v2017-PYR3VV1ZrSe

@kocio-pl
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I feel that porting is not a way to go - I learned a lot about this style and I don't need separate ticket for finding interesting solutions, so I'll close it now.

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