How to use ENCMarinerSettings to set depth units with iOS/Swift

[ChrisPelon]

Can someone help me set the depth units to feet? Here's my code, I am displaying the ENC chart successfully.

import SwiftUI
import ArcGIS

struct ContentView: View {
    @State private var map = AGSMap(basemapStyle: .arcGISOceans)

    var body: some View {
        MapView(map: map)
            .edgesIgnoringSafeArea(.all)
            .onAppear {
                map.initialViewpoint = AGSViewpoint(latitude: 45.318063, longitude: -85.2584, scale: 30055)
                loadENCExchangeSet()
            }
    }

    private func loadENCExchangeSet() {
        
        let depthUnits = AGSENCMarinerSettings.shared()
        

        // Load ENC Exchange Set
        if let catalogURL = Bundle.main.url(forResource: "CATALOG", withExtension: "031", subdirectory: "/ENC_ROOT") {
            let encExchangeSet = AGSENCExchangeSet(fileURLs: [catalogURL])
            
            encExchangeSet.load { error in
                if let error = error {
                    print("Error loading ENC Exchange Set: \(error.localizedDescription)")
                } else {
                    
                    let encLayers = encExchangeSet.datasets.map { AGSENCLayer(cell: AGSENCCell(dataset: $0)) }
                    DispatchQueue.main.async {
                        self.map.operationalLayers.addObjects(from: encLayers)
                        // Adjust this viewpoint to match where your ENC data is
                        self.map.initialViewpoint = AGSViewpoint(latitude: 45.318063, longitude: -85.2584, scale: 30055)
                    }
                }
            }
        } else {
            print("Error: CATALOG.031 file not found in bundle.")
        }
    }

}

struct MapView: UIViewRepresentable {
    let map: AGSMap
    let graphicsOverlay = AGSGraphicsOverlay()

    func makeUIView(context: Context) -> AGSMapView {
        let mapView = AGSMapView()
        mapView.map = map
        mapView.graphicsOverlays.add(graphicsOverlay)
        return mapView
    }

    func updateUIView(_ uiView: AGSMapView, context: Context) {
        // Perform any necessary updates to the UIView
    }

}


struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

[ChrisPelon]

I have this line, but does not seem to work.  colorScheme is working, but not displayDepthUnits.

// Set up ENC environment
        let hydrographyDirectory = Bundle.main.url(forResource: "S57DataDictionary", withExtension: "xml", subdirectory: "hydrography")!.deletingLastPathComponent()
        let environmentSettings = AGSENCEnvironmentSettings.shared()
        environmentSettings.resourceDirectory = hydrographyDirectory
        environmentSettings.sencDataDirectory = FileManager.default.temporaryDirectory
        
        environmentSettings.displaySettings.marinerSettings.displayDepthUnits = .feet
        
        environmentSettings.displaySettings.marinerSettings.colorScheme = .day

[RonaldHaug]

Hi Chris,

I may be out of my depth here, but I recommend you google "ENCMarinerSettings".

From the listings:

1) ArcGIS delevopers has Class EncMarinerSettings . Checking the ClassEncMariner Settings, color scheme default is day, so I don't know whether your coding is steering the ship.

2) There is a post similar to yours posted in Esri Community "Issue with 'EncDisplaySettings' in ArcGIS Runtime SDK for Qt" . This one the answer is solved by starting with #include "EncDisplaySettings.h" in the code.

Hope this leads you a bit further down the path to solving your coding and getting your display panel operating the way you want it to. What's a pirate's favorite letter? "Aaaaarrrgh"

[ChrisPelon]

Hi Ron,

Thanks for taking a look. EncMarinerSettings.colorscheme is working well. I can switch between day/dusk/night. What is not working is EncMarinerSettings.displayDepthUnits. No matter what I do, the chart always shows depths in meters. I have searched online for many hours and even went round and round with chatGPT 🙂 to no avail. Must be something simple I am missing.

[RonaldHaug]

Hi Chris,

I'm sure it's staring us both in the face.

What's up with that line 18 of code?  let depthUnits = AGSENCMarinerSettings.shared()

Have you run the code for errors?

[ChrisPelon]

I've removed line 18 since I posted the code, I was just playing with ways to get displayDepthUnits to work.

[rolson_esri]

This line in your code should do it:

        environmentSettings.displaySettings.marinerSettings.displayDepthUnits = .feet

One of my colleagues is going to check to see if we have a bug here. I can get back to you after that.

Also, I see that you are using our 100.x SDK and using it with SwiftUI. Is there a reason why you haven't migrated to our 200 series with the Swift SDK? It has out of the box support for SwiftUI: https://developers.arcgis.com/swift/

[ChrisPelon]

Thank you for pointing out I was not using 200. I have updated to 200 sdk. but now this code does not work. 

private func loadENCExchangeSet() {
        // Load ENC Exchange Set
        if let catalogURL = Bundle.main.url(forResource: "CATALOG", withExtension: "031", subdirectory: "/ENC_ROOT") {
            let encExchangeSet = ENCExchangeSet(fileURLs: [catalogURL])

            encExchangeSet.load { error in
                if let error = error {
                    print("Error loading ENC Exchange Set: \(error.localizedDescription)")
                } else {
                    let encLayers = encExchangeSet.datasets.map { ENCLayer(cell: ENCCell(dataset: $0)) }
                    
                    DispatchQueue.main.async {
// I am getting error here
                        self.map.operationalLayers.addObjects(from: encLayers)
                        print("ENC layers added to the map.")
                    }
                }
            }
        } else {
            print("Error: CATALOG.031 file not found in bundle.")
        }
    }

[rolson_esri]

Why are you using a dispatch async to add the operational layers? I don't think you need to do that. Nevertheless, I don't think that should be an issue. What error are you seeing or what is failing?

[ChrisPelon]