plotSeason: Plots seasonal patterns for a time series
Description
Divides the time range for a monthly time series into different eras and plots composites of seasonal pattern. Can also plot each month separately for the entire record.
Usage
plotSeason(x, type = c("by.era", "by.month"), num = 4, ylab = NULL, ...)
Arguments
Value
A plot (and the corresponding object of class "ggplot").
Details
When plotted "by.era", the composite patterns are plotted in a horizontal row for easier comparison, which limits the number of periods that can be examined. Boxes based on fewer than half of the maximum possible years available are outlined in red. When plotted "by.month", parameters can be passed to facet_wrap in ggplot2. The most useful parameters here are ncol (or nrow), which determines the number of columns (or rows) of plots, and scales, which can be set to "free_y" to allow the y-axis to change for each individual month. A loess smoother with span = 1 is added to each plot. As always, and especially with these plots, experiment with the device aspect ratio and size to get the clearest information.