isOrdered: Check If A Vector Is Ordered
In R-Finance/xts: eXtensible Time Series

Description Usage Arguments Details Value Author(s) See Also Examples

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

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

`x`	a numeric vector
`increasing`	test for increasing/decreasing values
`strictly`	are duplicates OK

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

Logical

Jeffrey A. Ryan

is.unsorted

# 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)