The axis contains independent data values rather than a range of numeric values.
Each distinct value is represented by a tick mark. Discrete is the default axis type for
character data.
Linear
The axis contains a linear range of numeric values. Linear is the default axis type for
numeric data.
Logarithmic
The axis contains a logarithmic range of values. The logarithmic axis type is not used
as a default.
Time
The axis contains a range of time values. Time is the default axis type for data that
uses a SAS time, date, or datetime format.
Some types of plot do not support all of the axis types. For ...
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