When you plot several data series, or use a pie chart, RainPro will work through a standard sequence of 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 pattern series:

ch.Set 'patterns' 3 2 34
ch.Set 'patterns' '10%,basket,solid'

Note that you can give names or numeric values here. These should be in the range 0-39 to select from the standard patterns, or numbers above 40 which are the ids of custom tiles or gradient fills. The simple plain half-tones are generally best for normal use. Linear gradients are effective tools in barcharts, and radial gradients can work well with polar and pie charts.

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 ...
ch.DefineTile – define new fill patterns
Colours – set colour cycle
Lines – line-style cycle
Markers – marker cycle
Nibs – nib weight cycle
Shading Patterns