Subset | R Documentation |

This function allows to subset (i.e. slice, take a chunk of) an array, in a
similar way as done in the function `take()`

in the package plyr. There
are two main snprovements:

First, the input array can have dimension
names, either in `names(dim(x))`

or in the attribute 'dimensions'. If
both exist, `names(dim(x))`

is prioritized. The dimensions to subset
along can be specified via the parameter `along`

either with integer
indices or either by their name.

Second, there are additional ways to
adjust which dimensions are dropped in the resulting array: either to drop
all, to drop none, to drop only the ones that have been sliced or to drop
only the ones that have not been sliced.

```
Subset(x, along, indices, drop = FALSE)
```

`x` |
A named multidimensional array to be sliced. It can have dimension
names either in |

`along` |
A vector with references to the dimensions to take the subset from: either integers or dimension names. |

`indices` |
A list of indices to take from each dimension specified in 'along'. If a single dimension is specified in 'along', it can be directly provided as an integer or a vector. |

`drop` |
Whether to drop all the dimensions of length 1 in the resulting array, none, only those that are specified in 'along', or only those that are not specified in 'along'. The possible values are: 'all' or TRUE, 'none' or FALSE, 'selected', and 'non-selected'. The default value is FALSE. |

An array with similar dimensions as the `x`

input, but with
trimmed or dropped dimensions.

```
#Example synthetic data:
# Dimension has name already
data <- 1:(2 * 3 * 372 * 1)
dim(data) <- c(time = 372, lon = 2, lat = 3, model = 1)
data_subset <- Subset(data, c('time', 'model'),
list(1:10, TRUE), drop = 'selected')
dim(data_subset)
# Use attributes 'dimensions'
data <- array(1:(2 * 3 * 372 * 1), dim = c(2, 3, 372, 1))
attributes(data)[['dimensions']] <- c('lat', 'lon', 'time', 'model')
data_subset <- Subset(data, c('lon', 'lat'), list(1, 1), drop = TRUE)
dim(data_subset)
```

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.