A logarithmic price scale uses the percentage of change to plot data points, so, the scale prices are not positioned equidistantly. A linear price scale uses an equal value between price scales ...

Using the base 2 avoids this problem. Next week we will discuss alternative ways of labeling log scales. A dot plot is judged by its position along an axis; in this case, the horizontal or x axis.

This example uses a DATA step to generate data. 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 ...