which_min_nm: Return (Row, Column) Index of (First) Minimum of a Numeric...

Description Usage Arguments Details Value Examples

View source: R/RcppExports.R

Description

Written in C++, this function tends to run much faster than the equivalent (if minimum is unique) base R solution which(x == min(x), arr.ind = TRUE).

Usage

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Arguments

x

Numeric matrix.

Details

For optimal speed, choose the version of this function that matches the class of your x:

which_min_nv for numeric vector.
which_min_iv for integer vector.
which_min_nm for numeric matrix.
which_min_im for integer matrix.

Value

Integer vector.

Examples

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# which_min_nm is typically much faster than 
# which(x == min(x), arr.ind = TRUE)
x <- matrix(rnorm(100), ncol = 10)
all(which(x == min(x), arr.ind = TRUE) == which_min_nm(x))
benchmark(which(x == min(x), arr.ind = TRUE), which_min_nm(x), 
          replications = 5000)

dvmisc documentation built on May 2, 2019, 5:51 p.m.