Add data_visualization_web_ui/js/charts.js

data_visualization_web_ui/js/charts.js

@@ -0,0 +1,161 @@
+/*
+ * charts.js — chart_logic for data_visualization_web_ui
+ * Verantwortlich für das Zeichnen und Aktualisieren der Magnetometer-Zeitreihen
+ * und Analyse-Zusammenfassung.
+ */
+
+/**
+ * Erstellt und rendert Zeitreihen-Diagramme (Bx, By, Bz) basierend auf Messdaten.
+ * @param {Array<{timestamp: string, sensor: string, Bx: number, By: number, Bz: number}>} data - Messwerte
+ * @param {HTMLCanvasElement} canvas - Canvas-Element zur Darstellung
+ * @returns {Chart|null} ChartJS-Instanz oder null, wenn keine Daten vorhanden
+ */
+export function renderDataCharts(data, canvas) {
+  if (!Array.isArray(data) || data.length === 0 || !canvas) return null;
+
+  const ctx = canvas.getContext('2d');
+  const timestamps = data.map(d => new Date(d.timestamp).toLocaleTimeString());
+  const bx = data.map(d => d.Bx);
+  const by = data.map(d => d.By);
+  const bz = data.map(d => d.Bz);
+
+  // Falls vorheriger Chart vorhanden: zerstören
+  if (canvas._chartInstance) {
+    canvas._chartInstance.destroy();
+  }
+
+  const chart = new Chart(ctx, {
+    type: 'line',
+    data: {
+      labels: timestamps,
+      datasets: [
+        {
+          label: 'Bx',
+          data: bx,
+          borderColor: '#1e88e5',
+          fill: false,
+          tension: 0.1
+        },
+        {
+          label: 'By',
+          data: by,
+          borderColor: '#43a047',
+          fill: false,
+          tension: 0.1
+        },
+        {
+          label: 'Bz',
+          data: bz,
+          borderColor: '#f4511e',
+          fill: false,
+          tension: 0.1
+        }
+      ]
+    },
+    options: {
+      responsive: true,
+      maintainAspectRatio: false,
+      interaction: {
+        mode: 'index',
+        intersect: false
+      },
+      scales: {
+        x: {
+          title: {
+            display: true,
+            text: 'Zeit'
+          }
+        },
+        y: {
+          title: {
+            display: true,
+            text: 'Feldstärke (nT)'
+          }
+        }
+      },
+      plugins: {
+        legend: {
+          position: 'top'
+        },
+        tooltip: {
+          mode: 'nearest'
+        }
+      }
+    }
+  });
+
+  canvas._chartInstance = chart;
+  return chart;
+}
+
+/**
+ * Zeigt Analyseergebnisse im DOM an (z. B. Durchschnittswerte, Peaks, Noise, Drift).
+ * @param {{mean?: number, peaks?: number[], noise?: number, drift?: number}} analysis - Analyseobjekt
+ * @returns {void}
+ */
+export function renderAnalysisSummary(analysis) {
+  const panel = document.querySelector('#analysis-panel');
+  if (!panel) return;
+
+  panel.innerHTML = '';
+
+  const summaryList = document.createElement('ul');
+  summaryList.className = 'analysis__list';
+
+  const addItem = (label, value) => {
+    const li = document.createElement('li');
+    li.className = 'analysis__item';
+    li.textContent = `${label}: ${value ?? 'n/a'}`;
+    summaryList.appendChild(li);
+  };
+
+  addItem('Durchschnitt', analysis.mean !== undefined ? analysis.mean.toFixed(2) : 'n/a');
+
+  if (Array.isArray(analysis.peaks)) {
+    addItem('Peaks', analysis.peaks.join(', '));
+  }
+
+  addItem('Noise', analysis.noise !== undefined ? analysis.noise.toFixed(2) : 'n/a');
+  addItem('Drift', analysis.drift !== undefined ? analysis.drift.toFixed(4) : 'n/a');
+
+  panel.appendChild(summaryList);
+
+  // Kleinvisualisierung: Balkendiagramm für Peaks, falls vorhanden
+  if (Array.isArray(analysis.peaks) && analysis.peaks.length > 0) {
+    const canvas = document.createElement('canvas');
+    canvas.className = 'analysis__peaks-chart';
+    panel.appendChild(canvas);
+
+    const ctx = canvas.getContext('2d');
+    if (canvas._chartInstance) {
+      canvas._chartInstance.destroy();
+    }
+
+    canvas._chartInstance = new Chart(ctx, {
+      type: 'bar',
+      data: {
+        labels: analysis.peaks.map((_, i) => `Peak ${i + 1}`),
+        datasets: [
+          {
+            label: 'Peakw e rte',
+            data: analysis.peaks,
+            backgroundColor: '#1e88e5'
+          }
+        ]
+      },
+      options: {
+        responsive: true,
+        maintainAspectRatio: false,
+        plugins: {
+          legend: { display: false }
+        },
+        scales: {
+          x: { title: { display: true, text: 'Index' } },
+          y: { title: { display: true, text: 'Wert' } }
+        }
+      }
+    });
+  }
+}
+
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