Posts: 953
Joined: Fri Mar 13, 2015 4:07 pm
Location: Eastern Time Zone, USA
Cars: I, being poor, have only my dreams
Tue Jul 07, 2015 4:34 am
Show zero on economy graph
I noticed this recently and thought I should speak up: the current economy graph is truncated at an arbitrary number. Truncating the graph like this makes it difficult to judge the economy curve by eye. Even if the result is less detailed, I think a better visual representation of the proportional changes of economy over the engine RPM range would make for a more informative display.
Take, for example, the following two charts:
In the first chart, fuel consumption at 500 RPM is about a third more than at max efficiency RPMs. In the second chart, it is almost double. But you can't tell that by eyeballing, because the first chart is truncated at 300 g/kWh and the second at 250 g/kWh - in both charts, all you can see is that it is more than fuel consumption at redline.
Take, for example, the following two charts:
- example economy graph.jpg (23.35 KiB) Viewed 1703 times
- example economy graph 2.jpg (26.19 KiB) Viewed 1703 times
In the first chart, fuel consumption at 500 RPM is about a third more than at max efficiency RPMs. In the second chart, it is almost double. But you can't tell that by eyeballing, because the first chart is truncated at 300 g/kWh and the second at 250 g/kWh - in both charts, all you can see is that it is more than fuel consumption at redline.
