Add route files, show overview

CHDataManagement/Workouts/ElevationGraph.swift

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+import SwiftUI
+import Charts
+
+struct ElevationSample: Identifiable {
+
+    let timestamp: Date
+
+    let altitude: Double
+
+    var id: Date {
+        timestamp
+    }
+}
+
+struct ElevationGraph: View {
+
+    let samples: [ElevationSample]
+
+    var body: some View {
+        Chart {
+            // Active segments as area + line
+            ForEach(samples) { sample in
+                LineMark(
+                    x: .value("Time", sample.timestamp),
+                    y: .value("Altitude", sample.altitude)
+                )
+                .foregroundStyle(by: .value("Series", "Altitude"))
+                //.interpolationMethod(.catmullRom)
+
+                AreaMark(
+                    x: .value("Time", sample.timestamp),
+                    y: .value("Altitude", sample.altitude)
+                )
+                //.interpolationMethod(.catmullRom)
+                .foregroundStyle(LinearGradient(
+                    gradient: Gradient(colors: [.blue.opacity(0.8), .blue.opacity(0.2)]),
+                    startPoint: .top,
+                    endPoint: .bottom
+                ))
+            }
+        }
+        .chartYAxis {
+            AxisMarks(position: .leading)
+        }
+        .chartXScale(domain: samples.first!.timestamp...samples.last!.timestamp)
+        .frame(width: 700, height: 220)
+        .padding()
+    }
+}