3.5) Line Styles
You can set the style of the line used by using the "linestyle" keyword in the call to plot or oplot.
plot, x, y, linestyle = 1 oplot, x, y, linestyle = 2
IDL has 6 line styles which you can use (0-5), they are:
| Index | Line Style |
| 0 | Solid |
| 1 | Dotted |
| 2 | Dashed |
| 3 | Dash Dot |
| 4 | Dash Dot Dot |
| 5 | Long Dashes |
So in our previous example, if we want to plot the second line as a dotted line, we simply replace the oplot command with the following:
oplot, x, x3, linestyle=1