Building a set of simple moving averages using a loop

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Hi everyvody,
I have to build a set of simple moving averages with different periods; may be that my problem is pretty tricky, but I really do not know how to solve that.
I thought to use the loop for as it follows:
for i = 5:1:30
SMAvector(:,i) = tsmovavg(vector,'s',i,2);
end
but matlab gives an error out as:
Undefined function 'le' for input arguments of type 'cell'.
Can someone help me to find a solution or explain me what does the error mean? Thanks in advance for the help.
  4 Comments
Geoff Hayes
Geoff Hayes on 7 Oct 2014
Ok - what have you defined SMAvector to be? Is it a cell array or an empty matrix or..? What happens if you do
SMAvector = zeros(length(vector),30-5+1);
for k = 5:1:30
SMAvector(:,k-5+1) = tsmovavg(vector,'s',k,2);
end
Note that I replaced your i with k since both i and j are used as representations for the imaginary number, and so it is good practice to avoid using either as indices in loops.

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Accepted Answer

Geoff Hayes
Geoff Hayes on 7 Oct 2014
Quantopic verified that the vector variable was of type double. As it was unclear how the SMAvector variables was declared, it was suggested that the following code be tried
SMAvector = zeros(length(vector),30-5+1);
for k = 5:1:30
SMAvector(:,k-5+1) = tsmovavg(vector,'s',k,2);
end
That seemed to work.

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