Column and row-wise means of a matrix | R Documentation |

Column and row-wise means of a matrix.

```
colmeans(x, parallel = FALSE, cores = 0)
## S3 method for class 'matrix'
colmeans(x, parallel = FALSE, cores = 0)
## S3 method for class 'data.frame'
colmeans(x, parallel = FALSE, cores = 0)
rowmeans(x)
colhameans(x, parallel = FALSE)
rowhameans(x)
```

`x` |
A numerical matrix or data.frame with data. |

`parallel` |
Do you want to do it in parallel in C++? TRUE or FALSE. |

`cores` |
Number of cores to use for parallelism. Valid only when argument parallel is set to TRUE. Default value is 0 and it means the maximum supported cores. |

A vector with the column or row arithmetic or harmonic means.

Manos Papadakis

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

```
colsums, rowsums, colMins, colMedians, colMads
```

```
x <- matrix(rpois(100 * 100, 10),ncol = 100)
x1 <- colmeans(x)
#x2 <- colMeans(x)
#all.equal(x1,x2)
x1 <- rowmeans(x)
#x2 <- rowMeans(x)
#all.equal(x1,x2)
colhameans(x)
rowhameans(x)
x<-x1<-x2<-NULL
```

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