# isOrdered

From xts v0.9-7
by Jeffrey Ryan

##### Check If A Vector Is Ordered

Performs check to determine if a vector is strictly increasing, strictly decreasing, not decreasing, or not increasing.

- Keywords
- misc

##### Usage

`isOrdered(x, increasing = TRUE, strictly = TRUE)`

##### Arguments

- x
a numeric vector

- increasing
test for increasing/decreasing values

- strictly
are duplicates OK

##### Details

Designed for internal use with xts, this provides highly optimized tests for ordering.

##### Value

Logical

##### See Also

##### Examples

`library(xts)`

```
# NOT RUN {
# strictly increasing
isOrdered(1:10, increasing=TRUE)
isOrdered(1:10, increasing=FALSE)
isOrdered(c(1,1:10), increasing=TRUE)
isOrdered(c(1,1:10), increasing=TRUE, strictly=FALSE)
# decreasing
isOrdered(10:1, increasing=TRUE)
isOrdered(10:1, increasing=FALSE)
# }
```

*Documentation reproduced from package xts, version 0.9-7, License: GPL (>= 2)*

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