ToLong, ToWide {DescTools} | R Documentation |

## Reshape a Vector From Long to Wide Shape Or Vice Versa

### Description

Simple reshaping a vector from long to wide or from wide to long shape by means of a single factor.

### Usage

```
ToLong(x, varnames = NULL)
ToWide(x, g, by = NULL, varnames = NULL)
```

### Arguments

`x` |
the vector to be reshaped |

`g` |
the grouping vector to be used for the new columns. The resulting |

`by` |
a vector to be used to merge the pieces of |

`varnames` |
the variable names if not the grouping levels should be used. |

### Details

`ToLong`

expects x as a matrix or a data.frame and reshapes it to a (long) factor representation.
`ToWide`

expects the vectors x, g, by, wheras x being the variable, g the splitting factor and by a vector for rowwise merging.

### Value

the reshaped object

### Author(s)

Andri Signorell <andri@signorell.net>

### See Also

### Examples

```
d.x <- read.table(header=TRUE, text="
AA BB CC DD EE FF GG
7.9 18.1 13.3 6.2 9.3 8.3 10.6
9.8 14.0 13.6 7.9 2.9 9.1 13.0
6.4 17.4 16.0 10.9 8.6 11.7 17.5
")
ToLong(d.x)
# ToWide by row numbers (by = NULL)
ToWide(PlantGrowth$weight, PlantGrowth$group)
# To wide aligned by key
set.seed(41)
PlantGrowth$nr <- c(sample(12, 10), sample(12, 10), sample(12, 10))
head(PlantGrowth)
ToWide(PlantGrowth$weight, PlantGrowth$group, by=PlantGrowth$nr)
```

[Package

*DescTools*version 0.99.54 Index]