How to set a marker for a Latitude and Longitude?

[hristogochev]

Thank you for this library! Saves a lot of time!

I'm trying to set a marker somewhere on the map for a given latitude and a longitude but I'm unable to find information on how to do so.

From what I understand I must use SymbolLayer, but that requires a Source, not a Position.

[boldtrn]

More of a general maplibre question. I'd recommend to read a maplibre tutorial first. You add point features to the source.

[hristogochev]

I tried this, as per the demo apps:

private val CHICAGO = Position(latitude = 41.878, longitude = -87.626)

val source = rememberGeoJsonSource("target", Point(CHICAGO))

But it throws an exception:

FATAL EXCEPTION: main
Process: com.hristogochev.maps, PID: 17452
  java.lang.IllegalStateException
    at dev.sargunv.maplibrecompose.compose.engine.RememberStyleCompositionKt.LocalStyleNode$lambda$2(rememberStyleComposition.kt:47)
    at dev.sargunv.maplibrecompose.compose.engine.RememberStyleCompositionKt.$r8$lambda$C8OPTyTfa3BQk2EGF2g3ru_rf6s(Unknown Source:0)
    at dev.sargunv.maplibrecompose.compose.engine.RememberStyleCompositionKt$$ExternalSyntheticLambda0.invoke(D8$$SyntheticClass:0)
    at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:83)

[hristogochev]

It turned out rememberGeoJsonSource must be called inside the MaplibreMap scope, otherwise you get that exception, would be nice if this gets documented somewhere as I found it by chance!