rowIQRs: Estimates of the interquartile range for each row (column) in a matrix

Description

Estimates of the interquartile range for each row (column) in a matrix.

Usage

rowIQRs(x, rows = NULL, cols = NULL, na.rm = FALSE, ...,
  useNames = TRUE)
colIQRs(x, rows = NULL, cols = NULL, na.rm = FALSE, ...,
  useNames = TRUE)
iqr(x, idxs = NULL, na.rm = FALSE, ...)

Value

Returns a numeric

vector of length N (K).

Arguments

x: An NxK matrix or, if dim. is specified, an N * K vector.
rows: A vector indicating subset of rows to operate over. If NULL, no subsetting is done.
cols: A vector indicating subset of columns to operate over. If NULL, no subsetting is done.
na.rm: If TRUE, missing values are excluded.
...: Additional arguments passed to rowQuantiles() (colQuantiles()).
useNames: If TRUE (default), names attributes of the result are set, otherwise not.
idxs: A vector indicating subset of elements to operate over. If NULL, no subsetting is done.

Missing values

Contrary to IQR, which gives an error if there are missing values and na.rm = FALSE, iqr() and its corresponding row and column-specific functions return NA_real_.

Author

Henrik Bengtsson

Examples

Run this code

set.seed(1)

x <- matrix(rnorm(50 * 40), nrow = 50, ncol = 40)
str(x)

# Row IQRs
q <- rowIQRs(x)
print(q)
q0 <- apply(x, MARGIN = 1, FUN = IQR)
stopifnot(all.equal(q0, q))

# Column IQRs
q <- colIQRs(x)
print(q)
q0 <- apply(x, MARGIN = 2, FUN = IQR)
stopifnot(all.equal(q0, q))

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