MATLAB: Finding the product within an interval

product

I have 250 element row vector of random numbers between intervals (-4.5, 5.5). Once I create that vector, how would I find the product of all elements between intervals (2.3, 2.6)?

Best Answer

If v is your vector of random numbers, do this:

   p = prod(v(v>=2.3 & v<=2.6)); % The desired product

Related Solutions

MATLAB: How to cut a vector in intervals

Use mat2cell:

v = 2:97;
intervallength = 3;
assert(isrow(v), 'input not a row vector');
assert(mod(numel(v), intervallength) == 0, 'vector length not divisible by interval length')
splitv  = mat2cell(v, 1, ones(1, numel(v)/intervallength) * intervallength);

MATLAB: Grouping sequence within interval

Something like this should do the trick for you


V1 = [0.73  0.74  0.77  0.78  0.79  11.17  11.18  11.19  11.20  11.22 11.23];
V2 = [0.71  0.78  0.76  6.04  6.08  6.01  11.38  11.4  11.1] ;
V3 = [0.73  0.74  0.75  4.29  4.33  7.83  7.85  11.38  11.34]
Vsorted = sort(V3); % Works also with V1, V2 
NewSeqLocations = find(diff(Vsorted)>0.5); % 0.5 is your interval, i.e, maximum difference between adjacent numbers
NewSeqLocations = [0,NewSeqLocations,length(Vsorted)]; % Last sequence ends at last array element and starts at first element
Seq = cell(length(NewSeqLocations)-1,1); % Save sequences in cell array
for idx=1:length(Seq)
    Seq{idx} = Vsorted(NewSeqLocations(idx)+1:NewSeqLocations(idx+1));
end
Seq{:}
ans =
   0.730000000000000   0.740000000000000   0.750000000000000
ans =
   4.290000000000000   4.330000000000000
ans =
   7.830000000000000   7.850000000000000
ans =
  11.340000000000000  11.380000000000001

Best Answer

Related Solutions

MATLAB: How to cut a vector in intervals

MATLAB: Grouping sequence within interval

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