A few thoughts about gauge charts

Let me start by saying an obvious thing: Gauge charts do deserve some recognition. Actually, they deserve a medal – a medal for being the most controversial chart type in history.

When I first saw a gauge chart, I was impressed. They looked pretty cool. Things changed when I got involved with my first BI project. A closer look revealed that these charts are actually pretty tough to look at. But let’s back up and start from the beginning.

GAUGE CHART

Gauge charts allow us to visualize data in a way that resembles a real-life speedometer needle or a regular gauge. They usually  display a single key measure. The outer scale of the gauge is often color-coded to provide additional performance context (green for good, red for bad). Below is a typical example:

Gauge Charts
Feels like driving a car?

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