No Display in chart Node

Dashboard
,
1 
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        "type": "function",
        "z": "c7b6d33bb6abd6a9",
        "name": "function 23",
        "func": "// Testdaten erzeugen (Beispiel: Herzfrequenzdaten)\nconst testData = [\n    { date: \"2025-01-13T00:00:00Z\", Avg: 72 },\n    { date: \"2025-01-13T00:05:00Z\", Avg: 75 },\n    { date: \"2025-01-13T00:10:00Z\", Avg: 78 },\n    { date: \"2025-01-13T00:15:00Z\", Avg: 70 },\n    { date: \"2025-01-13T00:20:00Z\", Avg: 72 },\n    { date: \"2025-01-13T00:25:00Z\", Avg: 74 },\n    { date: \"2025-01-13T00:30:00Z\", Avg: 76 }\n];\n\n// Extrahieren von Zeit und Durchschnittspuls (Avg)\nconst result = testData.map(entry => {\n    // Zeit als UNIX-Timestamp (Sekunden)\n    const entryTime = new Date(entry.date).getTime() / 1000;  // Zeit in Sekunden\n    return {\n        time: entryTime,\n        heartRate: Math.round(entry.Avg)  // Runden auf ganze Zahlen\n    };\n});\n\n// Bereite die Daten für die Chart-Node auf (nur data, ohne labels)\nmsg.payload = {\n    series: [\"Heart Rate\"],\n    data: [result.map(item => ({ x: item.time, y: item.heartRate }))],\n    // labels: result.map(item => new Date(item.time * 1000).toLocaleTimeString(\"de-DE\", {\n    //     hour: \"2-digit\",\n    //     minute: \"2-digit\",\n    //     second: \"2-digit\"\n    // }))  // Labels vorübergehend entfernt\n};\n\n// Debug-Ausgabe: Überprüfen des Payloads\nnode.warn(\"Debug Payload: \" + JSON.stringify(msg.payload));\n\n// Der Payload ist nun ein Objekt und kann an die Chart-Node übergeben werden\nreturn msg;\n\n\n",
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        "type": "ui_chart",
        "z": "c7b6d33bb6abd6a9",
        "name": "Heart Rate Chart",
        "group": "dc16b3d832f2905d",
        "order": 1,
        "width": "12",
        "height": "5",
        "label": "Heart Rate over Time",
        "chartType": "line",
        "legend": "false",
        "xformat": "HH:mm:ss",
        "interpolate": "linear",
        "nodata": "No data",
        "dot": false,
        "ymin": "50",
        "ymax": "150",
        "removeOlder": "1",
        "removeOlderPoints": "",
        "removeOlderUnit": "86400",
        "cutout": 0,
        "useOneColor": false,
        "useUTC": false,
        "colors": [
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            "#ff8000",
            "#a6ce39",
            "#000000",
            "#000000",
            "#000000",
            "#000000",
            "#000000",
            "#000000"
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        "outputs": 1,
        "useDifferentColor": false,
        "className": "",
        "x": 890,
        "y": 560,
        "wires": [
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        "type": "inject",
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        "type": "debug",
        "z": "c7b6d33bb6abd6a9",
        "name": "debug 5",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 1100,
        "y": 540,
        "wires": []
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    {
        "id": "dc16b3d832f2905d",
        "type": "ui_group",
        "name": "EKG",
        "tab": "16db628f79fd6854",
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        "collapse": false,
        "className": ""
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]

Hi,
Why is nothing displayed in the chart node? What am I doing wrong?
Frank

2

Your topic tags say Dashboard 2 but you are using Dashboard 1, please clarify which and alter tag to node-red-dashboard if you are using 1.

For DB 1 payload needs to be an array

msg.payload = [
    {
        series: ["Heart Rate"],
        data: [result.map(item => ({ x: item.time, y: item.heartRate }))]
    }
];
3

Very good, thank's