[!] Annotate x axis range in ggplot2 graphs

A wrapper function to annotate x axis range for ggplot2 graphs

spZone(xmin, xmax, fill = "red", alpha = 0.2, ...)

# S3 method for default
spZone(xmin, xmax, fill = "red", alpha = 0.2, ...)

# S3 method for formula
spZone(x, fill = "red", alpha = 0.2, ...)

Arguments

xmin

Minimum value of x axis.

xmax

Maximum value of x axis.

fill

Fill color.

alpha

Fill transperency.

...

further arguments to annotate.

x

formula indicating min and max values (xmin ~ xmax).

Examples

qplot_sp(flu) + spZone(425~450)
#> Warning: Function 'hyperSpec::chk.hy' is deprecated. 
#> Use function 'assert_hyperSpec' instead.

qplot_sp(flu) + spZone(460,490, fill = "green")
#> Warning: Function 'hyperSpec::chk.hy' is deprecated. 
#> Use function 'assert_hyperSpec' instead.