I’m trying to do cumulative sum using Apexchart like history chart but there seems to be an issue when using apex chart card. Here is the history chart
chart_type: line
period: hour
type: statistics-graph
entities:
- sensor.total_battery_in
- entity: sensor.total_battery_out
name: Out
stat_types:
- sum
days_to_show: 1
title: Battery IN/OUT
However, the apex chart output is
type: custom:apexcharts-card
graph_span: 24h
span:
start: day
offset: +1h
header:
show: true
series:
- entity: sensor.total_battery_in
type: line
name: IN
group_by:
func: last
duration: 1h
It seems to show the trend but the sum value is not correct.
Any suggestion?