# Changing Variables

Sometime, you would rather use other variables names than *x and
y* for your plots. GnuPlot allows you to change the name of the
independent variable. You do this using the **set dummy**
command. For instance, if you were working with 2D plots with *t*
as the independent variable,
**plot sin(x)** - Would bring up the graph
**set dummy t**
**plot sin(x)** - Would give you the error *undefined
variable: x*.
**plot sin(t)** - Would bring up the graph again.

You can change the dummy variables for 3D plots as well, with one of
the following:
**set dummy u, v** - To change x to u, and y to v
**set dummy ,v** - To just change y to v

For more information, see **help set dummy**.

Table of Contents - Previous - Defining your own functions - Next - Changing Axis Labels

**College of Natural Sciences /
University of Northern Iowa /
manager@cns.uni.edu**
Copyright © 1996 College of Natural Sciences. All Rights Reserved.

Last Modified: 10/29/96