2.21.17 dummy

The dummy command changes the default dummy variable names.

Syntax:

      set dummy {<dummy-var>} {,<dummy-var>}
      show dummy

By default, `gnuplot` assumes that the independent, or "dummy", variable for the `plot` command is "t" if in parametric or polar mode, or "x" otherwise. Similarly the independent variables for the `splot` command are "u" and "v" in parametric mode (`splot` cannot be used in polar mode), or "x" and "y" otherwise.

It may be more convenient to call a dummy variable by a more physically meaningful or conventional name. For example, when plotting time functions:

      set dummy t
      plot sin(t), cos(t)

At least one dummy variable must be set on the command; dummy by itself will generate an error message.

Examples:

      set dummy u,v
      set dummy ,s

The second example sets the second variable to s.