Switch fallback does not work?

[jgillich]

I'm making a programmatic material map style inspired by Sargun's PR, but I have an issue. Something seems off with switch. Setting dasharray with a switch, all values the same and fallback set, no dashes:

Fixed value, dashes:

Am I missing something?

[jgillich]

Also using BaseStyle.Empty breaks the map and the console logs

[HTTP] Unable to parse resourceUrl

Gonna see if I can't fix that

[sargunv]

Looks like line dasharray doesn't yet support data driven styling, so you can't use feature get: https://maplibre.org/maplibre-style-spec/layers/#line-dasharray

Upstream issues:

• Data-driven line-dash-array  maplibre-native#744 for native
• Implement data-driven styling for line-dash-array maplibre-gl-js#1235 for web

In this case, you can use multiple line layers, each with a filter, to accomplish what you want.

[sargunv]

That said, ideally our library should make it more obvious when data driven styling is unavailable. Feel free to file a feature request issue for API ergonomics

[jgillich]

Ah I see, thank you!