Column and row-wise tabulate | R Documentation |

Column and row-wise tabulate of a matrix.

```
colTabulate(x, max_number = max(x))
rowTabulate(x, max_number = max(x))
```

`x` |
An integer matrix with the data. The numbers must start from 1, i.e. 1, 2, 3, 4,... No zeros are allowed. Anything else may cause a crash. |

`max_number` |
The maximum value of vector x. If you know which is the max number use this argument for faster results or by default max(x). |

The functions is written in C++ in order to be as fast as possible.

A matrix where in each column the command "tabulate" has been performed. The number of rows of the returned matrix will be equal to the max_number if given. Otherwise, the functions will find this number.

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

```
colShuffle, colVars, colmeans
```

```
x <- matrix( rbinom(100 * 100, 4, 0.5), ncol = 100 )
colTabulate(x)
rowTabulate(x)
x<-NULL
```

Rfast documentation built on Nov. 9, 2023, 5:06 p.m.

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