Speedometer with time series
If I had to get rid of a chart forever, I would probably choose the speedometer. It is a metaphor taken too far, a waste of premium screen real estate, and it tells you very little.
That said, too many people like it and changing their minds is proving to be harder than expected. So, why not make some changes to the existing dashboards and make those rows of speedometers a little richer?
The needle has a begin and an end. As long as we respect their positions, nothing prevents us from using the middle section for something useful, in this case, a time series to show how the KPI changed over time.
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