National Oceanic and
Atmospheric Administration
United States Department of Commerce

Making a plot with one scale on the left and another on the right

Making a plot with one scale on the left and another on the right

Question:

How can I make a plot with separate plot axes for different variables?

Example:

The demo script:

yes? go multi_variable_demo.jnl

gives a number of examples which call scripts from the Ferret distribution. Try this script and study the calls that it makes. Here is one of the plots from that demo.

To change pen colors, for instance, from the ones used in the script, you could make a copy of one of those scripts and change the details of the commands.

Another technique is even more flexible. Define multiple identical viewports, and draw different parts of the plot in each one. For instance,