[Numpy-discussion] Utility function to find array items are in ascending order

[Keith Goodman]

On Tue, Feb 9, 2010 at 7:42 AM, Vishal Rana <ranavishal at gmail.com> wrote:
> Hi,
> Is there any utility function to find if values in the array are in
> ascending or descending order.
> Example:
> arr = [1, 2, 4, 6] should return true
> arr2 = [1, 0, 2, -2] should return false
> Thanks
> Vishal

I don't know if it is fast but np.diff should do the trick. You can
check if all values are less than or equal to zero. Or if all are
greater.