Hello to you, I am completely new to Node-RED (under Docker). Currently, I am exploring the tools and I am struggling to create a chart using a CSV file. I have successfully read the CSV file and displayed a table, but I am stuck on the chart. I created a function to format it correctly, but I can…

Welcome to the forum @Basileos I recommend watching this playlist: Node-RED Essentials . The videos are done by the developers of node-red. They're nice & short and to the point. You will understand a whole lot more in about 1 hour. A small investment for a lot of gain. When you have watched those,…

Hello! Thank you for the playlist. It's very interesting, and I've learned a lot. Unfortunately, I still can't resolve my chart issue. I assume that my object is not correct and is not readable by my 'chart' node. I'm attaching a screenshot of my flow and the latest debug just before my 'chart' no…

[image] Basileos: I assume that my object is not correct and is not readable by my 'chart' node. Did you check the help file that comes with the node. There's a lot of info how to structure a msg that the chart understands. Yours looks definitely wrong...

First thing you should do is (1) click on the chart node (2) select the help tab in the right hand sidebar (3) read what it says [Screenshot 2023-12-05 at 4.24.29 AM] Then look at what you are sending to the chart and see if you can figure out the issue.

To add historical data one sample at a time you need to follow the link from the help text to https://github.com/node-red/node-red-dashboard/blob/master/Charts.md . There, this section tells you how to do it: You can also insert extra data points by specifying the timestamp property. This must be i…

Thank you for your help. I had already gone through the documentation, and despite that, I am struggling either to format my dataset or to configure my node (which requires minimal configuration). I have tried several nodes (split and join), functions to format my object, but nothing seems to work..…

[image] Colin: {topic:"temperature", payload:22, timestamp:1520527095000} Colin gave you the msg format that you should try to create. If that isn't enough for you to achieve your learning, you should consider to share a flow that we can use to investigate what's going wrong. Hint: A screen…

[image] Basileos: I have tried several nodes (split and join), functions to format my object, but nothing seems to work.. If you look at your debug you will see that you are putting the timestamp in msg.timestamp (which is correct) and the value in msg.y, where, from the docs, you need to put…

Here is the function that formats my data. I repeat myself, I am a total beginner in Javascript and Node-RED, so please be kind ^^ var dateString = msg.payload.timestamp; // Format : "YYYY/MM/DD HH:MM" // Séparer la chaîne en composants var components = dateString.split(/[\s\/:]/); // Divise la cha…

I finally have something! I understood my mistake due to a lack of knowledge in JavaScript, but I'm on the right track! It's not perfect, but I have a start of a chart! My code : var dateString = msg.payload.timestamp; // Format : "YYYY/MM/DD HH:MM" // Séparer la chaîne en composants var componen…

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Request for help with ui_chart in Node-RED for beginners.

Dashboard

smanjunath211 7 December 2023 15:35 15

this helped me a lot while starting with NR-Chart.

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Request for help with ui_chart in Node-RED for beginners.

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