Label numbers with scientific notation (e.g. 1e05, 1.5e-02)

Label numbers with scientific notation (e.g. 1e05, 1.5e-02)

label_scientific(digits = 3, scale = 1, prefix = "", suffix = "",
  decimal.mark = ".", trim = TRUE, ...)

scientific_format(digits = 3, scale = 1, prefix = "", suffix = "",
  decimal.mark = ".", trim = TRUE, ...)

scientific(x, digits = 3, scale = 1, prefix = "", suffix = "",
  decimal.mark = ".", trim = TRUE, ...)

Arguments

digits	Number of digits to show before exponent.
scale	A scaling factor: x will be multiplied by scale before formating. This is useful if the underlying data is very small or very large.
prefix, suffix	Symbols to display before and after value.
decimal.mark	The character to be used to indicate the numeric decimal point.
trim	Logical, if FALSE, values are right-justified to a common width (see base::format()).
...	Other arguments passed on to base::format().
x	A numeric vector to format.

Value

All label_() functions return a "labelling" function, i.e. a function that takes a vector x and returns a character vector of length(x) giving a label for each input value.

Labelling functions are designed to be used with the labels argument of ggplot2 scales. The examples demonstrate their use with x scales, but they work similarly for all scales, including those that generate legends rather than axes.

Old interface

scientific_format() and scientific() are retired; please use label_scientific().

See also

Other labels for continuous scales: label_bytes, label_dollar, label_number_auto, label_number_si, label_ordinal, label_parse, label_percent, label_pvalue

Other labels for log scales: label_bytes, label_number_si

Examples

demo_continuous(c(1, 10))
#> scale_x_continuous()
demo_continuous(c(1, 10), labels = label_scientific())
#> scale_x_continuous(labels = label_scientific())
demo_continuous(c(1, 10), labels = label_scientific(digits = 3))
#> scale_x_continuous(labels = label_scientific(digits = 3))

demo_log10(c(1, 1e9))
#> scale_x_log10()