A dot plot is judged by its position along an axis; in this case, the horizontal or x axis. A bar chart is judged by the length of the bar. I don’t like using lengths with logarithmic scales.

The PROC PLOT step shows two plots of the same data -- one plot without a horizontal axis specification and one plot with a logarithmic scale specified for the horizontal axis. Program: options nodate ...

Besides, even though Richter apparently acknowledged that "logarithmic plots are a device of the devil," they're actually widely used, as geologist Williams reminded me.

By contrast, in a logarithmic plot, each tick on the y-axis represents a tenfold increase over the previous one: 1, then 10, then 100, then 1,000, then 10,000 and so on.