Chart widgets contain graphs with multiple data points for a selected time frame. First, you choose what type of chart you want to create:
- Single charts: display individual graphs for every sensor you select.
- Combine sensors in one widget: display data from multiple sensors in one graph.
- Aggregate sensors in one widget: show aggregated data (eg. averages) of multiple sensors in one graph.
Single charts and Combined sensors
For single charts or combined sensors you can select the sensors you want to add to the widget(s), and click NEXT:
Next you can:
- Change the title of the widget(s).
- Select the time period of the graph. For example, if you want to display data of last week, select “Last 7 days”.
- Select the interval size which indicates the frequency of the data. For example, if you want to see what happens on an hourly basis, select “per hour”. Or if you want to see daily data select “per day”.
- Select the statistics you would like to see (averages, min, max or sums). The default selection is averages.
Aggregate sensors in one chart
For aggregated sensors you either
- select the sensors one by one from the list,
- or multiple sensors at once by using tags.
Note that in order to aggregate data from multiple sensors, the sensors must be of the same type. For example, all temperature sensors, or all presence sensors. You can’t create aggregations using different type sensors.
In the example above, we selected all sensors with the tag “Room climate”.
You can also select multiple tags. For example, “Room climate” , “First Floor”.
When you select more than two tags, you must also choose whether you want the sensors to belong to:
- at least one of the tags (logical OR operator), or
- in all of the tags (logical AND operator)
To create a graph using all sensors that show the “room climate” in the “first floor”, you need to select “All of the tags”.
To create a graph using all sensors from “first floor” and “second floor”, you need to select “At least one of the tags”.