Multiple values in bar chart

[Glake01]

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;

[Glake01]

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

[joepavitt]

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

[joepavitt]

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

Lack of Support

• Currently, we're limited to "Categorical" axes for Bar Charts, i.e. a Histogram. What you've got has a linear/numerical x-axis, which we don't currently support. I've opened an issue and made it a "High Priority" - Support "Linear" & "Timescale" x-axis on a bar chart · Issue #1045 · FlowFuse/node-red-dashboard · GitHub

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.

[Colin]

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.

[Glake01]

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