`ensuredim`

turns vectors into 1d-arrays, and leaves arrays unchanged. `drop1d`

is the
inverse: it converts 1d arrays into vectors.

1 2 3 |

`x` |
vector (or array) |

`drop` |
if |

`esuredim`

array of at least one dimension

`drop1d`

vector, if `x`

had only 1 dimension

Claudia Beleites

Claudia Beleites

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