Description Usage Arguments Value Examples

Functions for evaluating distance between variables

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`x, y` |
variables to be compared |

`var` |
variable code |

Difference or ratio of `x`

and `y`

(for `dif`

) and sum or product (for `rev_dif`

and `rev_difv`

). Distance is measured as difference for variables included in `getOption('additive_variables')`

, i.e. temperature (`TAS`

) by default, and as a ratio for other variables.

While `rev_dif`

returns `sum(x, y)`

or `prod(x, y)`

, `rev_difv`

takes single vector `x`

and returns `sum(x)`

or `prod(x)`

.

Used mainly in other functions of the package.

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