Support "Linear" & "Timescale" x-axis on a bar chart

[joepavitt]

Description

Currently, we only support a "Categorical" x-axis for Bar Charts, i.e. a histogram.

We should also support "Linear" or "Timescale" x-axis so that uses can render charts like https://discourse.nodered.org/t/multiple-values-in-bar-chart/89129/2

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate

[joepavitt]

Blocked by the fact that ChartJS is v poor at supporting these

[Snotmann]

... anyone got an idea how this issue is handled ? Dashboard 2.0 isnt useable to me without ---

[joepavitt]

What is it that you're trying to visualise @Snotmann ?

Bar charts for continuous time series data are not generally a good way of displaying data.

[colinl]

What is it that you're trying to visualise

See https://discourse.nodered.org/t/meter-reading-with-barchart-data-in-dashboard-2-0/96550

[Snotmann]

I want a bar chart for 7 days filled with smartmeter readings like colin linked