The primary and secondary Y axes are independently scaled and there is not a necessary
connection between the units or data ranges of either axis.
Avoiding Plot Axis Conflicts
In GTL, it is important to know what types of axes a given plot requires or can support.
If you understand the basic ideas behind previous examples, you can use the following
additional GTL syntax to avoid some of the problems caused by the first plot statement
deciding the axis type:
•Use the PRIMARY=TRUE option in a plot statement to ensure that plot is used to
determine the axis type.
•Declare an axis type in the layout block.
Most non-dependent plot ...
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