Multiple values in bar chart

Dashboard
1

I'm struggling with making the transition from DB1 to DB 2. I'm trying to generate a bar chart for a single series similarly to what I was doing in DB 1. I've tried to go back to basics with a variation of the DB 2 examples and can't even get a value displayed. I know it's something obvious but sure can't get things to work. Any help would be appreciated!

Function node into chart:

msg = {
    "payload": [
        {
            "category": "bar-1",
            "value": 34
        },
       {
            "category": "bar-1",
            "value": 17
        }
    ]
}
return msg;

ChartNode
ChartNode686Ă—779 88 KB

Chart
Chart897Ă—613 35.9 KB

2

This is what I'm trying to replicate from DB1:

DB1 Series
DB1 Series260Ă—747 76.3 KB

DB1 Chart

3

Hi, I'm the lead dev on Dashboard, thanks for your question. Only on my phone at the moment, but I actually can't see anything wrong with what you've constructed here.

I'll be able to get to my laptop within the hour, and I can take a proper look

4

Okay, so we definitely have some issues in the ui-chart node. A quick summary of the problems I can see:

Lack of Support

Bugs

  • The Dashboard is requiring a refresh each time I send it data and only do a "Modified Nodes" deploy. This issue appears to have been opened a long time ago, and I completely missed it.
  • Giving the ui-chart a series of a static string causes unpredictable behaviour. I can't follow the logic atm of how it's deciding to plot what it is plotting.
5

While you are in there you might like to sort out Stale data not being weeded from chart · Issue #755 · FlowFuse/node-red-dashboard · GitHub too.

1 Like
6

Thank you Joe for the update. I'll stay tuned :slight_smile:

7

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