On 5/21/2009 1:51 PM Graham Arden said...
A python novice writes.....
Hello,
I'm trying to extract certain frames from a stack of images as part of
a project. In order to do this I need to produce an array which
consists of a group of eight, then misses the next 8, then selects the
next eight etc.
i.e (0, 1, 2, 3, 4, 5, 6, 7, 16, 17,18, 19,20,21, 22, 23, 32,33,....
etc)
The following code will produce a series of arrays:
a = arange (0,512)
b = [a[i:i + 8] for i in range (0, len(a), 16)]
How about...
>>> a = range(0,512)
>>> b = []
>>> [b.extend(a[i:i + 8]) for i in range (0, len(a), 16)]
>>> b
[0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 23, 32,
...
497, 498, 499, 500, 501, 502, 503]
>>>
Emile
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