Output Values from MySQL Database to a Chart

#1

Hello,

I want to take the Values from my Databse (temperature and date) and Display them into a Chart.

Database

I want to know how to loop the Array, so if i add more values i dont have to add them manualy to the chart.
I tried to do it with a for loop, but I didnt wanted to work for me.
In the future i just want to display for exmaple the last 30 min.
Hope you know what im trying to do :smiley:

Im also getting the error message: "Bad data inject"

[
    {
        "id": "6dcc085f.8aae88",
        "type": "tab",
        "label": "Flow 2",
        "disabled": false,
        "info": ""
    },
    {
        "id": "c83a55f7.9707f8",
        "type": "mysql",
        "z": "6dcc085f.8aae88",
        "mydb": "6f90c35b.00d35c",
        "name": "",
        "x": 540,
        "y": 320,
        "wires": [
            [
                "6bb9b1.12c8965",
                "780899de.750f58"
            ]
        ]
    },
    {
        "id": "6bb9b1.12c8965",
        "type": "debug",
        "z": "6dcc085f.8aae88",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 870,
        "y": 280,
        "wires": []
    },
    {
        "id": "6a612d33.ec8064",
        "type": "function",
        "z": "6dcc085f.8aae88",
        "name": "Query",
        "func": "msg.topic = \"SELECT temperature,date FROM processvalue\"\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 370,
        "y": 320,
        "wires": [
            [
                "c83a55f7.9707f8"
            ]
        ]
    },
    {
        "id": "780899de.750f58",
        "type": "ui_chart",
        "z": "6dcc085f.8aae88",
        "name": "",
        "group": "33603f93.9c94e",
        "order": 0,
        "width": 0,
        "height": 0,
        "label": "chart",
        "chartType": "line",
        "legend": "false",
        "xformat": "HH:mm:ss",
        "interpolate": "linear",
        "nodata": "",
        "dot": false,
        "ymin": "",
        "ymax": "",
        "removeOlder": "5",
        "removeOlderPoints": "",
        "removeOlderUnit": "60",
        "cutout": 0,
        "useOneColor": false,
        "colors": [
            "#1f77b4",
            "#aec7e8",
            "#ff7f0e",
            "#2ca02c",
            "#98df8a",
            "#d62728",
            "#ff9896",
            "#9467bd",
            "#c5b0d5"
        ],
        "useOldStyle": false,
        "x": 870,
        "y": 380,
        "wires": [
            [],
            []
        ]
    },
    {
        "id": "308ee1ab.ecc5ce",
        "type": "inject",
        "z": "6dcc085f.8aae88",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 220,
        "y": 320,
        "wires": [
            [
                "6a612d33.ec8064"
            ]
        ]
    },
    {
        "id": "6f90c35b.00d35c",
        "type": "MySQLdatabase",
        "z": "",
        "host": "localhost",
        "port": "3306",
        "db": "nodered",
        "tz": ""
    },
    {
        "id": "33603f93.9c94e",
        "type": "ui_group",
        "z": "",
        "name": "Default",
        "tab": "65b7f908.1d1348",
        "disp": true,
        "width": "6",
        "collapse": false
    },
    {
        "id": "65b7f908.1d1348",
        "type": "ui_tab",
        "z": "",
        "name": "Home",
        "icon": "dashboard"
    }
]
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#2

https://groups.google.com/forum/#!topic/node-red/MbOPcXNJRzI

This helped me.

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