Create a map for platform heights

[margin-auto]

In the railway world a lot depends on the platform heights concerning accessibilty. So a map showing the height of rail platforms would be very useful for railway companies. According to the ORM wiki the platform height can be mapped to the railway=platform object (https://wiki.openstreetmap.org/wiki/OpenRailwayMap/Tagging#Platforms)

[TheSikal]

I don't think it's worth a separate style but I like the idea! Platforms are already rendered in Infrastructure layer and the height tag is shown in platform's popup :

railway=platform_edge can also have the height tag.

Maybe an option in Infrastrucure layer settings to switch between normal and height-coloured rendering?

[margin-auto]

Maybe an option in Infrastrucure layer settings to switch between normal and height-coloured rendering?

I thought about a style where the railway tracks are displayed in black or grey and the platforms are displayed on a colour scale depending on the platform's height.

[hiddewie]

Mentioned in #970