clusterProperties Expressions behave different on iOS

[jblemee]

Steps to Trigger Behavior

1. Create a clustered ShapeSource

 <ShapeSource
        id="map-opportunities"
        ref={shapeSourceRef}
        cluster
        clusterRadius={50}
        clusterMaxZoomLevel={14}
        clusterProperties={{
            // does not work on ios
            maxPrice: ['max', ['get', 'price']],
        }}
        shape={geojsonFeed}
    
    >

2. Try to use the cluster property on a SymbolLayer

 <SymbolLayer
        id="priceLayer"
        style={{
          ...
            textField: ['get', 'maxPrice'],
        ...
        }}
       ...
    />

Link to Minimal Reproducible Example

Expected Behavior

Show the max price number

Actual Behavior

It shows the string max on IOS (both simulator and real device). It works on android (both emulator and real device)

Screenshots (if applicable)

Environment

• Platform: IOS
• OS version: iOS 18
• Device type: iPhone 13 and simulator
• Emulator or Simulator: yes
• Development OS: macOS 15
• @maplibre/maplibre-react-native Version: 10.0.0-beta.8 and 10.0.0-beta.11 (at least)
• MapLibre Native Version: do not know
• react-native Version: 0.76.3 (with newArch)
• expo Version: no expo

Additional context

[KiwiKilian]

Did you have a look at the earth quakes example?

Can you try if this works?

        clusterProperties={{
            maxPrice: ['max', 'accumulated', ['get', 'price']],
        }}

Maybe even with ['accumulated']?

Otherwise please create a minimal example within this file: https://github.com/maplibre/maplibre-react-native/blob/beta/packages/examples/src/examples/BugReport.tsx

[jblemee]

Did you have a look at the earth quakes example?

Of course

According to the documentation (https://docs.mapbox.com/style-spec/reference/sources/#geojson-clusterProperties), the 'accumulated' syntax is optional.

Otherwise please create a minimal example within this file: https://github.com/maplibre/maplibre-react-native/blob/beta/packages/examples/src/examples/BugReport.tsx

I'll do it if the "accumulated" can't be used as a workaround

[jblemee]

Ok, it works with the "accumulated" syntax and it also works with the short syntax..

The issue was that the 'short' syntax failed on IOS when there is some undefinednumbers. Seems like Android is converting them to 0 but IOS do not

[KiwiKilian]

I guess this might also be solvable with expressions, to fallback to zero? Might be worth to report this back to MapLibre Native? Closing here, as the RN wrapper isn't at fault here.