Hey guys, I'm working on a few Dashboards and have found it pretty annoying to lose all my charted points when im restarting my Docker instance. I tried to read up on it using this flowfuse article but noticed it is for Dashboard-1 and not 2. If i attach a Debug Node to the Chart Node from D2 i jus…

Here is an example of how I would save data to context and recover when server restarted. You will need to set your context store to persistent Working with context : Node-RED I have limited the stored data to 1000 readings, I have edited all nodes so look at them all. Ì have included test data,…

Hi @DarkZone - it has come up as a request before, and something we're considering bringing back. The logic behind it with Dashboard 2.0 is that you can just store a list of your messages, pass them back in, and it'll render the data accordingly.

Hello Joe thanks for the answer, I'm afraid that's not working properly, propably my mistake tho. I made a function that now trims down my mqtt messages to a 3 key object. it is structured like so : msg.payload ={"timestamp":1725967766338,"value":25.5,"sourcePath":"Innen-Links"} I append those mes…

[image] DarkZone: Chart Node is set to "Append" and not "Replace". Perhaps this is your problem ?

I second this. Im guessing you're parsing multiple times, and the data just continues to append. We don't check for duplicates before adding to the chart, as it's perfectly valid for a chart to have two points of data with the same values.

Perhaps there is a misunderstanding, my current flow looks like this [image] using the replace instead of append option really messes with the graph since each value retrieved over the mqtt subscriber is replacing the previous value. The desired functionality is: Chart out the retrieved JSON data…

You can store the incoming data to a database or depending how many points your chart is showing a context variable. You can then restore your chart using the saved data. If you require more help i suggest you show an example of your incoming data (in text form) and an export of your flow. You can…

Okay, so you're definitely taking the correct approach with "Append", however, it does seem something in your logic is causing the same data to be appended multiple times.

Hello @E1cid , the mqtt-messages currently look like this before getting transformed by the function node: "{"version":"1.0","data":[{"processDataUnit":"°C","tid":"31e4d5ae-540a-4c46-b2b0-c6146022b153","psid":"Temperature","devicePath":"V5-KO-INO-MaschinenNR/10.1.50.4:80/LDH292/X01/Temperature","sou…

Hello @joepavitt , I added the flow once again in my previous comment. I currently still cant get behind why it wouldnt work in the current config. Maybe you can gather something from it. Thanks for taking a look.

Thank you for the input, I was too obsessed with using the msg. option when trying to assign a series. using the key as the series identifier makes it much simpler, especially when the message is transformed by functions and injection nodes. I will keep your tips in mind regarding the etiquette, I …

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Storing Chart Data from a D2 Dashboard

Dashboard

Godfrey 28 September 2024 23:56 16

Thank you

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Storing Chart Data from a D2 Dashboard

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