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Removal of empty entries in an array (fast)
I have a very large array 360,000 and I want to remove the odd 20-30 empty cells in the array. How can this be done without increasing computational speed by much?
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 Mohit
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12/29/2010 10:21:04 AM |
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On 29/12/10 4:21 AM, Mohit Thukral wrote:
> I have a very large array 360,000 and I want to remove the odd 20-30
> empty cells in the array. How can this be done without increasing
> computational speed by much?
A = A(cellfun(@(C) ~isempty(C), A));
Though possibly it might be faster to use
A(cellfun(@isempty,A)) = [];
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Walter
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12/29/2010 10:27:30 AM
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Walter Roberson <roberson@hushmail.com> wrote in message <n2ESo.26567$Qi5.6376@newsfe01.iad>...
> On 29/12/10 4:21 AM, Mohit Thukral wrote:
> > I have a very large array 360,000 and I want to remove the odd 20-30
> > empty cells in the array. How can this be done without increasing
> > computational speed by much?
>
> A = A(cellfun(@(C) ~isempty(C), A));
>
> Though possibly it might be faster to use
>
> A(cellfun(@isempty,A)) = [];
That is very fast. Thank you for the assistance.
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Mohit
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12/29/2010 10:36:06 AM
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Walter Roberson <roberson@hushmail.com> wrote in message <n2ESo.26567$Qi5.6376@newsfe01.iad>...
> On 29/12/10 4:21 AM, Mohit Thukral wrote:
> > I have a very large array 360,000 and I want to remove the odd 20-30
> > empty cells in the array. How can this be done without increasing
> > computational speed by much?
>
> A = A(cellfun(@(C) ~isempty(C), A));
>
> Though possibly it might be faster to use
>
> A(cellfun(@isempty,A)) = [];
None of that is fastest. Thes fastest is this:
C(cellfun('isempty',C)) = [];
Bruno
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Bruno
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12/29/2010 10:41:06 AM
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