Time Series Axis Style Tables

SUMMARY:

axis.break.table , axis.tick.table , and axis.label.table are tables with data that is used in time series plotting to determine the style and placement of axis ticks, axis tick labels, and axis breaks. axis.break.table is a named list whose BreakSpan element is a time span vector, and whose other elements tell how to treat an axis break with the corresponding span. axis.tick.table is a data frame whose span and span.frac columns correspond to data ranges per desired number of tick marks for the x-axis, and whose other columns tell how to generate time sequences for placing the different sizes of axis ticks for those these ranges. axis.label.table is a data frame with information about tick label formatting. Its Units column is a factor with several different time units for the tick frequency, which generally come from the medium ticks. For each of those time units, there are several styles of axis tick labels, corresponding to values of the Number column, and the remaining columns of the data frame tell how to format the main and outer labels for these styles, and where to place the outer labels. The following styles are pre-defined for various time units:

VALUE:

milliseconds, seconds, minutes, hours
Style 1: the main label is the time of day and the outer label is the date.
days
Style 1: the main label is the day and the outer label is the date. Style 2: the main label is the day and the outer label is the month. Style 3: the main label is the month/day and the outer label is year. Style 4: the main label is the date and there is no outer label.
weeks
Style 1: the main label is the date and there is no outer label. Style 2: the main label is the day and the outer label is the month/year. Style 3: the main label is the month/day and the outer label is year.
months
Style 1: the main label is the month and the outer label is year. Style 2: the main label is the month/year and there is no outer label.
quarters
Style 1: the main label is the quarter and the outer label is year. Style 2: the main label is the quarter/year and there is no outer label.
years
Style 1: The main label is the year. There is no outer label.