month.distance | R Documentation |

The (integer) number of months between dates.

```
MonthDistance(dates, origin)
```

`dates` |
A vector of class |

`origin` |
A scalar of class |

Returns a numeric vector giving the integer number of months
that have elapsed between `origin`

and each element in
`dates`

. The daily component of each date is ignored, so two
dates that are in the same month will have the same measured
distance. Distances are signed, so months that occur before
`origin`

will have negative values.

Steven L. Scott steve.the.bayesian@gmail.com

```
dates <- as.Date(c("2008-04-17",
"2008-05-01",
"2008-05-31",
"2008-06-01"))
origin <- as.Date("2008-05-15")
MonthDistance(dates, origin) == c(-1, 0, 0, 1)
```

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