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Is there a widget that displays a count of unique values in a given field?

Question asked by paul.haakma on Feb 26, 2017
Latest reply on May 6, 2018 by paul.haakma

I have a field in a webmap called 'deviceId' that displays a unique string for each device that pushes data into it.


Ideally, I want a widget in an Operations Dashboard that displays a count of the number of unique devices.


I can see how to display a count of features, but can't see how to create a query that filters by unique value.


In a round-a-bout way, a bar graph achieves something similar, by displaying a unique bar for each deviceId with counts of the number of features for that deviceId, but it's not the effect I want. I just need a single count figure.


Any ideas?