Multi-Device Chart

The Multi-Device Chart widget displays time series data from multiple devices and fields. For charts limited to a single device and field, see Device Chart.

A Multi-device chart widget, plotting several devices and fields as separate series

Setup

Select the Device from the list.
Select the Field, the data field to chart.
Press Add to Chart to add the device-field combination.
Repeat for every combination you want on the chart.

The Selected Combinations section lists the added device-field combinations. Press Delete to remove an individual field or an entire device from the chart.

The Selected combinations section, listing each device-field pair with a delete button

Chart type

This widget can draw the series in four ways. The setting is not available on the single Device chart.

Chart type	Suits
Line	A value that moves continuously, such as a temperature
Area	The same, with the area under the line filled
Bar	A value measured per interval, such as consumption or a count
Stacked bar	The same, with the series on top of each other

With Stacked bar, each bar is the total across the devices and each segment is one device's part of it. It answers "how much altogether, and who contributed what" in one chart - the same question a pie chart answers for a single moment.

Stacking only means something where the values add up. Stacked temperatures do not.

Three of the four, each shown with the Chart type setting that produced it:

The Area chart type, with Curve type set to Smooth and the area under each line filled