R: Sub-matrix

Sub-matrix {Rfast} | R Documentation

## Sub-matrix

### Description

Sub-matrix.

### Usage

    submatrix(x,rowStart=1,rowEnd=1,colStart=1,colEnd=1)

### Arguments

`x` | A Matrix, List, Dataframe or Vector.
`rowStart` | Start of the row.
`rowEnd` | End of the row.
`colStart` | Start of the col.
`colEnd` | End of the col.

### Value

sub matrix like R's, x[startrow:endrow,startcol:endcol]. Fast especially for big sub matrices.

### Author(s)

Manos Papadakis

R implementation and documentation: Manos Papadakis <papadakm95@gmail.com>.

### See Also

`Match, mvbetas, correls, univglms, colsums, colVars`

### Examples

    x <- matrix( rnorm(100 * 100), ncol = 100 )
    res<-submatrix(x,1,50,1,25) # x[1:50,1:25]

    x<-NULL

[Package Rfast version 2.0.4 Index]