# trimSum

##### Trim a vector such that the last/first value represents the sum of trimmed values

`trimSum`

trims (shortens) a vector in such a way that
the last or first value represents the sum of trimmed values. User needs
to specify the desired length of a trimmed vector.

- Keywords
- manip

##### Usage

`trimSum(x, n, right=TRUE, na.rm=FALSE, …)`

##### Arguments

- x
numeric, a vector of numeric values

- n
numeric, desired length of the output

- right
logical, trim on the right/bottom or the left/top side

- na.rm
logical, remove

`NA`

values when applying a function- …
arguments passed to other methods - currently not used

##### Value

Trimmed vector with a last/first value representing the sum of trimmed values

##### See Also

##### Examples

```
x <- 1:10
trimSum(x, n=5)
trimSum(x, n=5, right=FALSE)
x[9] <- NA
trimSum(x, n=5)
trimSum(x, n=5, na.rm=TRUE)
```

*Documentation reproduced from package gdata, version 2.18.0, License: GPL-2*

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