When you plot several data series, RainPro will work through a standard sequence of line-styles, colours, shading patterns, markers and so on. These series have been intentionally chosen to be of varying lengths to reduce the chance of any two data-series being plotted in the same combination.

To over-ride the line-style series:

chSet 'lines' 'dot,dash,solid'
chSet 'lines' 2 3 4 112

You can give style names or numeric values here. These should be in the range 0-6 to select from the standard styles, or numbers above 6 which are the ids of custom styles.

The cycle will persist from the point where you set it, until you set this property again – this allows you to set it once only for a series of several plotting calls.

See also ...
chDefineDash – generate custom dash repeats
Colours – set colour cycle
Line Styles
Markers – marker cycle
Nibs – nib weight cycle
Patterns – pattern cycle