Using a key metric
In the Data Explorer, the key metric provides a summary statistic for a selected property in your data view; it is located above the filter bar:
In this example, the key metric indicates there are approximately 267 cafes included in the multi-dimensional filter, based on the selected geographical area, time range and other data properties.
Selecting a key metric
You can select which property is displayed for the key metric using the drop down list:
For example, selecting the age property from the Ad Requests 1 data layer displays the average age of for the data points in your multi-dimensional filter. If the selected property is a:
- categorical property: the key metric shows the count for that property
- continuous numeric property, the key metric show either the average or total depending on what you have selected
Note that the time series chart below the map shows the selected property's summary statistic plotted over time.
Viewing the current rate of turn for a vessel
Say, for example, you have a dataset that records shipping vessel journeys, you might be interested in the levels of pollution created by each of the vessels. To do this, for example, you might look at the maneuverability of a specific vessel, using the rate of turn (ROT) for a specific vessel as an indicator. You might ask the following question:
What is the current rate of the turn for vessel with the MMSI 258089000?
In the Data Explorer, you can display just the data points for your chosen vessel, and then use the key metric selector to display the Rate of Turn (ROT) metric for the selected data points. Notice that the ROT metric is also shown on the time series chart beneath the map. You can zoom in to section of the time series chart or drag it to the left and right to select the relevant events to answer your question.