aerialway=magic_carpet

[AntonioLagoD]

Fixes # 4649

Changes proposed in this pull request:

• add magic_carpet to aerialway, because it not rendering such ski lifts

Test rendering with links to the example places:

https://www.openstreetmap.org/#map=18/40.32955/-7.61252
In this place there is a magic carpet

Before

After

[danieldegroot2]

Ref #4649 (duplicate of #3169 (comment)).

[imagico]

Thanks for the pull request.

#3169 has been closed with the decision not to render this - this would need to be revised to accept this change.

Apart from that it seems most of these features are small, the vast majority less than a hundred meters in length. That would mean at the starting zoom level (z12) a length of just a few pixels in most cases.

[AntonioLagoD]

Ref #4649 (duplicate of #3169 (comment)).

#3169 was closed 4 years ago. I didn't know that issue.
The discuss was about if they are a fixed or a temporary structure.
I think they are mostly permanent structures like chairlifts, drag lifts and gondolas. It's easy to see in google satelllite maps in most ski resorts.

I am proposing a change for rendering them adding only two lines to aerialways.mss
Not rendering these structures will remain in a lack of precision.
I include some link to google satellite images showing magic carpets out of winter season:
https://www.google.es/maps/@40.3306288,-7.6140685,213m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/@43.0544945,-5.395534,72m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/@43.0425248,-5.388355,86m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/@43.0365816,-5.39643,61m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/@42.7029954,-0.2745188,244m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/@42.7781262,-0.4109055,290m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/@42.568172,1.641459,146m/data=!3m1!1e3?hl=es&authuser=0
https://www.google.es/maps/place/6450+S%C3%B6lden,+Austria/@46.9767072,10.9741966,135m/data=!3m1!1e3!4m5!3m4!1s0x479d325b54281ac7:0x4d28dbae2ec3df3f!8m2!3d46.9654937!4d11.0076232?hl=es&authuser=0

[imagico]

I suggest to have discussion if or if not to render this on #3169.

[imagico]

In my eyes this will require more work than just adding this as yet another aerialway type - mostly because aerialway=margic_carpet is different in meaning to the map user, both those who might want to use it in its function and those who see this merely as an artefact/obstacle.

As written in #3169 (comment) - if you want to work on that it would be important to consider the following:

• consider the typical size of these in rendering.
• consider that these are very different in meaning both to the user (in winter) and when it is not operational (as an obstacle) compared to actual aerialways in the true sense of the term.
• consider that rendering these but not rendering highway=footway + conveying=yes in a distinct fashion would probably lead to a problematic mapping incentive.

I'd encourage you to work on this but be aware that this will require both more coding and more actual design work. Especially finding a good solution to display highway=footway + conveying=yes could be quite challenging.