xgxr (version 1.0.2)

xgx_breaks_time: Sets the default breaks for a time axis

Description

xgx_breaks_time sets the default breaks for a time axis, given the units of the data and the units of the plot. It is inspired by scales::extended_breaks

Usage

xgx_breaks_time(data_range, units_plot)

Arguments

data_range

range of the data

units_plot

units to use in the plot

Value

numeric vector of breaks

Details

for the extended breaks function, weights is a set of 4 weights for

1. simplicity - how early in the Q order are you

2. coverage - labelings that don't extend outside the data: range(data) / range(labels)

3. density (previously granularity) - how close to the number of ticks do you get (default is 5)

4. legibility - has to do with fontsize and formatting to prevent label overlap

References

Talbot, Justin, Sharon Lin, and Pat Hanrahan. "An extension of Wilkinson<U+2019>s algorithm for positioning tick labels on axes." IEEE Transactions on visualization and computer graphics 16.6 (2010): 1036-1043.

Examples

# NOT RUN {
xgx_breaks_time(c(0, 5), "h")
xgx_breaks_time(c(0, 6), "h")
xgx_breaks_time(c(-3, 5), "h")
xgx_breaks_time(c(0, 24), "h")
xgx_breaks_time(c(0, 12), "h")
xgx_breaks_time(c(1, 4), "d")
xgx_breaks_time(c(1, 12), "d")
xgx_breaks_time(c(1, 14), "d")
xgx_breaks_time(c(1, 50), "d")
xgx_breaks_time(c(1000, 3000), "d")
xgx_breaks_time(c(-21, 100), "d")
xgx_breaks_time(c(-1, 10), "w")

# }

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