Re: fastest way to find the first non-zero value in an array

it depends on the size of array. Small array is a simple loop.
Huge one can be :

index_arr = where( arr NE 0)
print, index_arr[0]

on very huge arrays you can devide arr into big peaces.

Clemens

<smasson@[EMAIL PROTECTED]
> schrieb im Newsbeitrag
news:ff3bf651-8707-47e8-8cff-5e694dd5622f@[EMAIL PROTECTED]
> Hi,
>
> I want to find the first non-zero value of an array. Is there a faster
> way to do this than with the "where" command: (where(array ne 0))[0]
> "Where" will look for all non-zero values and I only need the first
> one. It would be great if I could stop "where" in its search process
> as soon as it found one element...
>
> sebastien