chop_quantiles {santoku}

Chop by quantiles

Description

chop_quantiles() chops data by quantiles. chop_deciles() is a convenience function which chops into deciles.

Usage

chop_quantiles(
  x,
  probs,
  ...,
  left = is.numeric(x),
  raw = FALSE,
  weights = NULL
)

chop_deciles(x, ...)

brk_quantiles(probs, ..., weights = NULL)

tab_quantiles(x, probs, ..., left = is.numeric(x), raw = FALSE)

tab_deciles(x, ...)

Arguments

x

A vector.

probs

A vector of probabilities for the quantiles. If probs has names, these will be used for labels.

...

For chop_quantiles, passed to chop(). For brk_quantiles(), passed to stats::quantile() or Hmisc::wtd.quantile().

left

Logical. Left-closed or right-closed breaks?

raw

Logical. Use raw values in labels?

weights

NULL or numeric vector of same length as x. If not NULL, Hmisc::wtd.quantile() is used to calculate weighted quantiles.

Details

For non-numeric x, left is set to FALSE by default. This works better for calculating "type 1" quantiles, since they round down. See stats::quantile().

If x contains duplicates, consecutive quantiles may be the same number so that some intervals get merged.

Value

⁠chop_*⁠ functions return a factor of the same length as x.

⁠brk_*⁠ functions return a function to create breaks.

⁠tab_*⁠ functions return a contingency table().

See Also

Other chopping functions: chop(), chop_equally(), chop_evenly(), chop_fn(), chop_mean_sd(), chop_n(), chop_proportions(), chop_width(), fillet()

Examples

chop_quantiles(1:10, 1:3/4)

chop_quantiles(1:10, c(Q1 = 0, Q2 = 0.25, Q3 = 0.5, Q4 = 0.75))

chop(1:10, brk_quantiles(1:3/4))

chop_deciles(1:10)

# to label by the quantiles themselves:
chop_quantiles(1:10, 1:3/4, raw = TRUE)

# duplicates:
tab_quantiles(c(1, 1, 1, 2, 3), 1:5/5)

set.seed(42)
tab_quantiles(rnorm(100), probs = 1:3/4, raw = TRUE)