Display only the max value per day

[JulianPSLearner]

Hi guys,
I want to have an electricity monitoring. Currently I have a home assistant helper that counts the used energy per day. At 0.00 it resets it and starts counting again.
I want to have graph that only displays one bar per day (electricity consumed).

But as I have multiple time stamps it shows me multiple bars for every day. What needs to be changed so I only see the max value per day?
Current draft:
`type: custom:apexcharts-card
graph_span: 7d
span:
end: day
header:
show: true
title: Stromverbrauch der Wärmepumpe pro Tag
show_states: true
colorize_states: true

series:

• entity: sensor.verbrauchszahler_strom_warmepumpe_taglich
  type: column
  statistics:
  period: day
  type: state
  group_by:
  func: max
  `

[wipash]

Try putting a duration in your group_by property, eg

type: custom:apexcharts-card
graph_span: 7d
span:
  end: day
header:
  show: true
  title: Stromverbrauch der Wärmepumpe pro Tag
show_states: true
colorize_states: true
series:
  - entity: sensor.verbrauchszahler_strom_warmepumpe_taglich
    type: column
    group_by:
      func: max
      duration: 1d

[Heindelange]

Thank you. This worked for me