[Numpy-discussion] looking for the Numpy to do it

Mathew Yeates myeates at jpl.nasa.gov
Tue Jul 11 16:17:18 CDT 2006


I bestow upon Sasha the mantle of guru.

Sasha wrote:
> Here is the solution of a half of the problem:
>
>>>> a=array([1,2,3,0,40,50,60,0,7,8,9])
>>>> 5+where(logical_and.accumulate(a[5:]!=0))
> array([5, 6])
>
> the rest is left as an exercise to the reader :-)
>
> Hint a[::-1] will reverse a.
>
>
> On 7/11/06, Mathew Yeates <myeates at jpl.nasa.gov> wrote:
>> I can handle the following problem by iterating through some indices but
>> I'm looking for a more elegant solution.
>>
>> If I have a 1d array, I want to find a contiguous nonzero region about a
>> given index. For example, if a=[1,2,3,0,40,50,60,0,7,8,9] and we start
>> with the index of 5, then I want the indices 4,5,6
>>
>> Any gurus out there?
>>
>> Mathew
>>
>>
>>
>> ------------------------------------------------------------------------- 
>>
>> Using Tomcat but need to do more? Need to support web services, 
>> security?
>> Get stuff done quickly with pre-integrated technology to make your 
>> job easier
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache 
>> Geronimo
>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> _______________________________________________
>> Numpy-discussion mailing list
>> Numpy-discussion at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/numpy-discussion
>>
>





More information about the Numpy-discussion mailing list