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Topic: taking the mean of a matrix
Replies: 2   Last Post: Dec 5, 2012 6:43 PM

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Nasser Abbasi

Posts: 5,698
Registered: 2/7/05
Re: taking the mean of a matrix
Posted: Dec 5, 2012 6:43 PM
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On 12/5/2012 5:37 PM, Nasser M. Abbasi wrote:
> On 12/5/2012 5:19 PM, David wrote:
>> I am trying to figure out how to make a for loop that will take the mean
>> of every, say n values, of a single column matrix...
>>
>> So say I have a matrix that is b(54,1), and I make n = 4, I want
>> the loop to take the mean of values 1-4, 5-8, 9-12, and so on.
>>

>
> what will happen when we get to 44-48, 49-52, then what about
> the last 2? ok to take just the mean of what is left? or you
> want an error for this?
>



assuming matrix is meant to be (52,1) so it divids OK, then
may be :

-----------------------
N = 52;
n = 4;
V = rand(N,1);
mean(reshape(V,n,N/n))
--------------------------

--Nasser




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