A ‘heat-map’ chart is a powerful visualisation technique that can easily show ten weeks’ half-hourly data in a single screen.
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A 'heat-map' chart is a powerful visualisation technique that can easily show ten weeks' half-hourly data in a single screen. In the chart each vertical slice is one day, running midnight to midnight top to bottom, with each half-hourly cell colour-coded according to demand to create a contour-map effect.
This for example is the pattern of a building's gas consumption.
When you look at this example, you can see numerous features:
- Optimised startup time (delayed in less-cold weather);
- Off at weekends but with some heating early on Saturday mornings;
- Peak output during startup;
- Fixed 'off' time;
- Shut-down over Christmas and New Year
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