Log scale

Plot the axis by ratio instead of by amount, so a doubling covers the same distance anywhere on the chart. Use it when values span orders of magnitude, or when you care about growth rate rather than absolute size.

Plot the axis by ratio instead of by amount, so a doubling covers the same distance anywhere on the chart. Use it when values span orders of magnitude, or when you care about growth rate rather than absolute size.

Example

Your weekly running distance went 0.8 miles, then 14 miles six months later. On a normal axis the early months look flat and worthless. On a log axis they are a straight climb, and the real news appears: your improvement rate halved after week 11.