rowMins: Calculates the minimum for each row (column) of a matrix-like...

In MatrixGenerics: S4 Generic Summary Statistic Functions that Operate on Matrix-Like Objects

Description

Calculates the minimum for each row (column) of a matrix-like object.

Usage

rowMins(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
rowMins(x, rows = NULL, cols = NULL, na.rm = FALSE, dim. = dim(x), ...)

## S4 method for signature 'ANY'
rowMins(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

colMins(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

## S4 method for signature 'matrix_OR_array_OR_table_OR_numeric'
colMins(x, rows = NULL, cols = NULL, na.rm = FALSE, dim. = dim(x), ...)

## S4 method for signature 'ANY'
colMins(x, rows = NULL, cols = NULL, na.rm = FALSE, ...)

Arguments

x	An NxK matrix-like object.
rows, cols	A vector indicating the subset of rows (and/or columns) to operate over. If NULL, no subsetting is done.
na.rm	If TRUE, NAs are excluded first, otherwise not.
...	Additional arguments passed to specific methods.
dim.	An integer vector of length two specifying the dimension of x, essential when x is a numeric vector. Note, that this is not a generic argument and not all methods need provide it.

Details

The S4 methods for x of type matrix, array, or numeric call matrixStats::rowMins / matrixStats::colMins.

Value

Returns a numeric vector of length N (K).

See Also

• matrixStats::rowMins() and matrixStats::colMins() which are used when the input is a matrix or numeric vector.

• For max estimates, see rowMaxs().

Examples

  mat <- matrix(rnorm(15), nrow = 5, ncol = 3)
  mat[2, 1] <- NA
  mat[3, 3] <- Inf
  mat[4, 1] <- 0
  
  print(mat)
  
  rowMins(mat)
  colMins(mat)
  

Example output

Loading required package: matrixStats

Attaching package: ‘MatrixGenerics’

The following objects are masked from ‘package:matrixStats’:

    colAlls, colAnyNAs, colAnys, colAvgsPerRowSet, colCollapse,
    colCounts, colCummaxs, colCummins, colCumprods, colCumsums,
    colDiffs, colIQRDiffs, colIQRs, colLogSumExps, colMadDiffs,
    colMads, colMaxs, colMeans2, colMedians, colMins, colOrderStats,
    colProds, colQuantiles, colRanges, colRanks, colSdDiffs, colSds,
    colSums2, colTabulates, colVarDiffs, colVars, colWeightedMads,
    colWeightedMeans, colWeightedMedians, colWeightedSds,
    colWeightedVars, rowAlls, rowAnyNAs, rowAnys, rowAvgsPerColSet,
    rowCollapse, rowCounts, rowCummaxs, rowCummins, rowCumprods,
    rowCumsums, rowDiffs, rowIQRDiffs, rowIQRs, rowLogSumExps,
    rowMadDiffs, rowMads, rowMaxs, rowMeans2, rowMedians, rowMins,
    rowOrderStats, rowProds, rowQuantiles, rowRanges, rowRanks,
    rowSdDiffs, rowSds, rowSums2, rowTabulates, rowVarDiffs, rowVars,
    rowWeightedMads, rowWeightedMeans, rowWeightedMedians,
    rowWeightedSds, rowWeightedVars

           [,1]        [,2]       [,3]
[1,] -0.3719395 -0.31669563 -0.2419946
[2,]         NA  0.59290237 -0.9594698
[3,]  0.5659424  2.23957030        Inf
[4,]  0.0000000  0.07755812 -0.2760817
[5,] -0.7778717 -0.01776258  0.3031428
[1] -0.3719395         NA  0.5659424 -0.2760817 -0.7778717
[1]         NA -0.3166956 -0.9594698

MatrixGenerics documentation built on Feb. 1, 2021, 2:01 a.m.