YamlCardChart

Card type cardChart

The card type cardChart can be used to show a bar graph of the openHAB persistance data fo one item.

You can define the following card attributes and one slot with references to an items in openHAB:

card attribute	default value	optional / Mandetory	Description
color	violet	O	color of the graph
period	60min	O	Periods in minutes which will be shown in the chart. You can also use keywords like: h, 2h, d, 3d, w, m, to define an hour, 2 hours a day, 3days, a week or a month. see also: openHAB chart periods
past	0min	O	Minutes in the past from where the defined perios starts. You can also use keywords like: 2h, 2M etc. See openHAB chart periods
life	False	O	When you set this attribute to True the cahrt is updated when the item change the state. Note: If the state is changes every few seconds this result in the sitation, that the screensaver is not activated.

Slot number	OH item type	slot types	default value	optional / Mandetory	Description
1	Number, Dimmer, Rollershutter	any	-	M	A char based on numbers will be genarated
1	String, Switch, Contact	any	-	M	A chart with a percentage of each state inside the defined period will be generated

Simple example for a number chart:

  - name: PowerChart
    title: Stromverbrauch
    type: cardChart
    slots:
      - class: ohItem
        type: number
        item: Stromzaehler_power

The y axis label is used to show the maximum and minimum values during the period. The minimum value in the chart is scaled that 0 on the y axis is equivalent to the minimum value in the defined period. The labels on the x axis show the start and end of the defined period. The date and time is formated dependant on the language you specified in the ini file.

Another example for a chart with the states of a Switch item:

  - name: StateChart
    title: Küchenlicht
    type: cardChart
    period: d
    past: w
    color: yellow
    slots:
      - class: ohItem
        type: switch
        item: Switch_Kueche

This example shows a yellow chart. You can see how long the kitchen light where active on the same day as today one week ago.