Openstreetmap-carto: show names of aerialways

[matkoniecz]

http://overpass-turbo.eu/s/bfz - aerialways with names

[kocio-pl]

Great idea, the only problem is from which zoom level to start it and how big letter size should we use.

[yvecai]

This was removed a while ago, best to know why.

[mboeringa]

Great idea, the only problem is from which zoom level to start it and how big letter size should we use.

1:50k, the first real topographic map scale, close to Z13/14. Many aerialways are at least one, or a couple of kilometres long. At 1:50k, this means at least 2 cm labelling space along the line, and in most cases more, which should be sufficient to place labels.

[matkoniecz]

@yvecai

This was removed a while ago, best to know why.

There was catch-all rendering - all name tags were rendered (including names on misspelled objects and names that were not deserving rendering).

[Penegal]

I'm willing to fix this, but first a question: a naive option could be to render the name as it is rendered for railways, because railways and aeroways are related in that they are mechanized means of transport, based on a steel way. Would that be OK? I ask now because that would mean, IMO, including aeroways in railways-text-name code, so I prefer not messing with such a piece of code before having some opinions.

[kocio-pl]

I think this is a valid solution.

[Penegal]

Would this way do it?

[matkoniecz]

Looks OK based on this examples - but maybe names should be a bit closer (or not, it may require testing with tall characters).

[yvecai]

'Petite Mauselaine' looks upside down, is there a way to write it bottom to top?

Le 14 mars 2018 19:15:38 GMT+01:00, Mateusz Konieczny [e-mail] a écrit :

Looks OK based on this examples - but maybe names should be a bit
closer (or not, it may require testing with tall characters).

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Yves

[Penegal]

@yvecai: it is not fully upside down, but slightly left to right; the problem is the orientation of the aerialway, almost north-south.

@matkoniecz: I'll try closer and taller characters.

[kocio-pl]

Mateusz meant probably testing fake names with tallest characters possible with certain font size, like ÈÈÈÈÈÈÈÈ or ÉÉÉÉÉÉÉ.

[yvecai]

@Penegal , I had the same issue on opensnowmap with icons on aerialways, but worse: it looks really ugly to have a gondola upside-down.

I solved it by reversing the ways depending on orientation.

          (SELECT 
             type, name,
            (CASE 
                WHEN st_x(st_startpoint(geometry)) < st_x(st_endpoint(geometry))
                THEN geometry 
                ELSE st_reverse(geometry)
            END) as geometry
          FROM 
            osm_aerialways
          ) as data

[matkoniecz]

Mateusz meant probably testing fake names with tallest characters possible with certain font size, like ÈÈÈÈÈÈÈÈ or ÉÉÉÉÉÉÉ.

Yes, I meant this. Sorry for confusion.

[mboeringa]

I had the same issue on opensnowmap with icons on aerialways, but worse: it looks really ugly to have a gondola upside-down.

I don't think they're aiming for gondolas on the map here... Let that be a unique feature of OpenSnowMap.

I personally don't have much of a problem with the reversed text, but I can understand some people would want them all to be in the same direction.

[yvecai]

@mboeringa Sure, I was giving an example that could also apply to the text orientation. Agreed this is not a major problem.
Yves

[Penegal]

Here you are:

With text-dy decreased of 2px:

[kocio-pl]

With text-dy decreased of 2px:

The label still fits and it looks better, so I vote for this version.

[matkoniecz]

As long as it fits it is clearly preferable. Hmm, maybe it would be even better with name on aerialway, without text-dy? (feel free to ignore this idea).

[Penegal]

Without text-dy:

It decreases readability IMO; I think I should go with the previous text-dy value.