blocksel | R Documentation |

Function `blocksel`

selects blocks (i.e. sets of columns) within a given matrix and concatenates the selected blocks into a new matrix.

```
blocksel(X, blocks)
```

`X` |
A |

`blocks` |
A list of same length as the number of blocks. Each component of the list gives the column numbers in |

`X` |
A matrix with the concatenated blocks. |

`blocks` |
A list of column numbers defining the blocks in the output matrix |

```
n <- 3 ; p <- 10
set.seed(1)
X <- matrix(rnorm(n * p, mean = 10), ncol = p, byrow = TRUE)
colnames(X) <- paste("Var", 1:p, sep = "")
set.seed(NULL)
X
blocks <- list(1:2, 4, 6:8)
blocks
blocksel(X, blocks)
```

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