I do have classical items, which just add consumption of energy, water, …
Is there a way to display delta-values from one item?
What I’d like to achieve is:
based on just on value-increasing item. Or do I need a virtual proxy item, which gets filled daily/weekly/monthly…?
Yes there is. You need to add an aggregate-series on the page configuration.
See example here:
config:
chartType: day
label: Wasserverbrauch
period: D
sidebar: true
visibleTo:
- role:administrator
slots:
grid:
- component: oh-chart-grid
config: {}
series:
- component: oh-aggregate-series
config:
action: analyzer
actionAnalyzerChartType: day
actionAnalyzerItems:
- Wasser_Zaehlerstand
aggregationFunction: diff_last
dimension1: hour
gridIndex: 0
item: Wasser_Zaehlerstand
name: Wasserverbrauch
type: bar
xAxisIndex: 0
yAxisIndex: 0
xAxis:
- component: oh-category-axis
config:
categoryType: day
gridIndex: 0
monthFormat: default
weekdayFormat: default
yAxis:
- component: oh-value-axis
config:
gridIndex: 0
name: Liter
nameLocation: end
that’s aggregated for an hour.
What I’m looking for ist to replace this (useless) chart:
but something like this (for that specific use case, there’s already a “daily”-item), e.g. starting daily/weekly/monthly:
My example will make this:
But it can not be applied as default. You will have to create a custom page.
Or are you searching for something else?
yes, a cumulative line. But starting with 0 daily/weekly/monthly and possibly without the need of proxy items.
This post has been very useful for me as well. I can now make a plot showing e.g. hourly electricity consumption using influxdb persistence. Of course another possibility would be to use e.g. Grafana but that would add another complexity because I would like to keep my OH setup (under Win11) as simple as possible.
I have few questions:
-are there any possibilities to add a label (box) which would show the sum of the hourly values?
-I can create charts e.g. for monthly and yearly consumption but are there any possibilities to include all these charts (hourly, monthly, yearly) in a single page?
You can add a tooltip:
You could add a second grid. See also demo page (user: demo; password: demo):
https://demo.openhab.org/settings/pages/chart/chart_example_combined
A combined view in one grid you need to test. I never tried.
Many thanks for the info. I’ll need to make some testing with the tooltip.
Perhaps I wasn’t clear enough regarding multiple charts. Basically I want to have e.g. 3 separate charts (daily, monthly, yearly) in a page. The combined view has two plots but the X-axis is the same for both. In my case x-axis would be hour, day and month so basically 3 separate charts.
Awesome example. I don’t mean to highjack the thread, but I hope this is somewhat related. From your example I can now finally display data like this:
2023-10-13 10:00:09.626, 17329.3
2023-10-13 11:00:07.614, 17329.73
2023-10-13 12:00:07.487, 17330.16
2023-10-13 13:00:07.537, 17330.57
2023-10-13 14:00:07.477, 17331.68
Like this:
Do you know if it’s also possible to offset the hours? The last one - 14 - actually represents the consumption from 13:00-14:00, so I would rather display 13. I tried Offset Amount and Offset Unit (1 hour), but that seems to do something else (the aggregates change):
And also, display “day” totally confuses me:
Is it mixing yesterday’s data after 14:00 with today’s data until 14:00? Can it be avoided and instead show “last 24 hours”?
Code:
config:
label: Energi
sidebar: true
period: D
slots:
grid:
- component: oh-chart-grid
config: {}
xAxis:
- component: oh-category-axis
config:
gridIndex: 0
categoryType: day
monthFormat: default
weekdayFormat: default
dimension1: hour
action: analyzer
actionAnalyzerChartType: day
actionAnalyzerItems:
- Omnipower_Accumulated
yAxis:
- component: oh-value-axis
config:
gridIndex: 0
series:
- component: oh-aggregate-series
config:
name: Forbrug
gridIndex: 0
xAxisIndex: 0
yAxisIndex: 0
type: bar
dimension1: hour
aggregationFunction: diff_last
item: Omnipower_Accumulated
service: jdbc
It seems tha the tooltip works only for a single bar. I would like to have a label box which would show e.g. the total day consumption.
