Hi folks, Currently I show a line chart with enlarged points for a large number of line charts: [image] But I would like to show only the points, but not the lines connecting those points... Does anybody knows how to do that? I expect that I will get an answer like: "when you don't want lines,…

Any good... [image] Problem with X/Y graph with ui_graph Dashboard Here is a scatter demo using chart.js... [4CJBilIHJz] [{"id":"acbdb34e9e6d9720","type":"change","z":"553814a2.1248ec","name":"random x/y","rules":[{"t":"set","p":"payload","pt":"msg","to":"(\t $minimu…

You can send an x value with a y value of null and that will break the line. Of course in this case it will mean twice the number of points which will make it even slower… So a complete new x/y chart in a ui-template may be better. I’m sure @hotnipi had an example in the forum.

[image] BartButenaers: But I would like to show only the points you could use the template node to create your own chart.js chart instead of the chart node. this way you can use the type of chart as scatter and in datasets showLine: false Example : [{"id":"d58b635f1bfdaa7f","type":"ui_tem…

Here's an example which limits the number of datapoints in the chart, and in this example removes datapoints older than 10 seconds. It also re-draws the plot when a browser connects or a reboot. ( @hotNipi helped me with this :slightly_smiling_face:) NB I've left the function nodes separate so it's…

Thumb rules: Always use dedicated chart type. Always optimize the data. Larger the dataset, more strictly you will need to take the rules

Thanks again guys!!!! I'm going to experiment with those proposals tonight. Now the lady of the house has other (non Node-RED related) tasks for her humble servant :cold_face:

I discovered a new problem with the Node-RED community. Since multiple high quality solutions are presented, you have to choose one of those :roll_eyes: Based on @hotNipi 's advised, I have dropped my idea of a line chart and selected the scatter chart proposal from @Steve-Mcl . But the other ideas…

@BartButenaers Bart, here is a writeup I did and put in the flow library a couple years ago incase it will be of any help: https://flows.nodered.org/flow/d1b9f2c606e536ce4a3960abcd887754

Hi Paul, A bubble chart. I love it already due to that name :wink: That could indeed be useful for my case. Especially the colors. Need to digest the ideas... Thanks!!

I realise your issues have been resolved, but I thought others might be interested in my "thinking outside the box" approach using Google Sheets to create an interactive Timeline point Chart embedded in an iframe in a ui_template on the node red dashboard. Various other charts are available in Sheet…

Hi @PdeJ , Thanks for joining! Yes that indeed looks like a very decent alternative. Only disadvantage is that it requires an online connection to do the calculations in the cloud... [image] BartButenaers: Especially the colors. Need to digest the ideas... In my use case it would be useful…

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Possibility to hide the lines in a line chart

Dashboard

Steve-Mcl 31 July 2021 08:57 6

Any good...

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Possibility to hide the lines in a line chart

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