[features] data explorer - add difference aggregation in time series chart

[jormus]

Would be nice to have a difference aggregation to the default times series chart, so we can plot the delta between 2 datapoints.

[tenthe]

What exactly do you mean by this?

Do you mean that the same time series can be displayed in different aggregation levels, or that the chart should show the difference between two data points from the stream?

[jormus]

Hi,
yes , more specified, in influx we can wrap a difference clause:

without, it is just the cumulative value:

[tenthe]

This is an interesting feature! I think we should discuss how expressive the data explorer functionality should be, since users could also achieve this through pipelines. The main drawback of the pipeline approach is that it doesn't work for historical data.