Scale for line patterns.
Default line types based on a set supplied by Richard Pearson, University of Manchester. Line types can not be mapped to continuous values.
scale_linetype(..., na.value = "blank") scale_linetype_continuous(...) scale_linetype_discrete(..., na.value = "blank")
... |
common discrete scale parameters: |
na.value |
The linetype to use for |
base <- ggplot(economics_long, aes(date, value01)) base + geom_line(aes(group = variable)) base + geom_line(aes(linetype = variable)) # See scale_manual for more flexibility
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