Can't explain double lines in graph

General
1

Hi,

My dashboard shows double lines which is not the intention. What is the reason that a 2nd line appears and how do I remove it?

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The data comes via MQTT ...

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and is linked to my node-RED dashboard.

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These are the settings from my CO2 dashboard node ...

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and the Temperature dashboard node.

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Thank you,

2

A 2nd line only appears when you have a different topic. So either you find out, filter out different topics etc.

3

To check whether you have two different topics add a debug node, set to output Complete Message, showing what is going to the chart and check the topic values there.

4

or turn on show legend in the chart nodes and it should show the topics in the chart

5

I think it was a different topic. I disconnected a few other sensors from the flow and now see the correct lines.
Thanks everyone for the advice

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6

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