precision_fixed: Suggested precision for fixed decimal formats
In jrnold/fivemat: Formatting Numbers for Display

Description Usage Arguments Details Value Source See Also Examples

Take either a numeric vector or the maximum absolute step size between values and and return a suggested decimal precision for fixed point formats such as "f".

1
2
3

precision_fixed(x)

precision_fixed_(step)

`x`	A numeric vector to be formatted.
`step`	Minimum absolute difference between values that will be formatted.

precision_round Returns a suggested decimal precision for format types that round to significant digits, such as "g" and "r".

precision_fixed Returns a suggested SI prefix.

The suggested precision is

max(0, floor(log10(d)))

where d is the maximum absolute distance between values. This assumes that the values to be formatted are multiples of the step size d.

An integer vector of suggest precisions. For precision_fixed, this is length one, for precision_fixed_ it is the same length as step.

The d3-format function precisionFixed.

precision_round for the suggested precision to use with formats that round to significant digits, and precision_prefix for the suggested SI prefix to use with formatting.

# step size is 1 and the suggested precision is 0
x <- c(1, 1.5, 2)
p <- precision_fixed(x)
p
fmt(x, paste0(".", p, "f"))
# alternatively calculate the step size
step <- max(diff(sort(x)))
precision_fixed_(step)
# For 1, 2, 3, the step size is 1 suggested precision is 0
x2 <- 1:3
p2 <- precision_fixed(x2)
p2
fmt(x2, paste0(".", p, "f"))