Secondary y-axis |
To create a second y-axis on an X-Y plot:
Double-click on an existing X-Y plot to bring up the Axes Page for the plot.
Check the "Enable Secondary Y axis" check box near the top left corner of the dialog and click OK.
A new placeholder appears on the right-hand side of the graph.
The secondary y-axis is useful for graphing multiple expressions related to the same independent or range variable, but of different scales. For example, you can graph one function that ranges from 0.1 to 1 on the primary axis, and another that ranges from 2000 to 10,000 on the secondary axis. Each axis will autoscale appropriately to best display the values in its range. The properties of each axis and trace can be set independently through the Axes, Traces, and Labels pages for the plot.
The pairing of y and x values is done in the same way that it is for multiple traces on a single, primary y-axis. If more than one trace exists, each sequential trace on the y-axis, starting with the primary and moving next to the secondary, will be paired with each sequential argument on the x-axis. If there are more y traces than x traces, the axes arguments will be sequentially paired until no more x arguments remain. The last x argument will be used for any unpaired y arguments.