Currently I can plot one data point on a scale of Min/ Max.
With this I could show the weather today is 75 degrees with a Min of 0 and Max of 100.
More informative in many cases would be the ability to set the min/max scale, in addition to a min/max value. Then I could show the weather today is 55-75 degrees with a min of 0 and max of 100. This is a lot more information without any sacrifice (from what I can see).
This would be valuable for many instances: price range, time estimates, numerical specification ranges, and more.
Of course if the value min was equal to the scale min, it would be hard to tell if it represented progress or range, so additional UI would need to be considered.
