MATLAB: Getting the position of a value in a vector

position;simplevector

Hey Matlab community, I have another one for you all. I have a vector of values BAC_F that corresponds with time, and I want the first position of BAC(BAC_F<.08) , but I can't quite figure it out. Any help and suggestions are appreciated.

Best Answer

If you want the index of the first value where BAC < 0.08:

BACx = find(BAC < 0.08, 1, 'first')

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MATLAB: Molweight function gives wrong values

I do not have the Bioinformatics Toolbox, so I cannot check this.

The function may assume that a string of amino acids are a peptide, the individual amino acids being covalently bonded to each other. Peptide bonds each involve a dehydration reaction, so there are likely fewer atoms in the peptide than in the individual amino acids. You can probably use the atomiccomp (link) function to check this.

The molecular weight of water is about 18, and there are 11 amino acids in your peptide, creating 10 peptide bonds, so while I cannot determine what you intend by ‘points’, the difference is likely 180 g/mole.

MATLAB: Sort a specific part of a row

Your question could have two meanings:

NewVector = [YourVector(1:4), sort(YourVector(5:end), 'descend')];

idx = find(YourVector == 4, 1, 'first');
if ~isempty(idx)
  NewVector = [YourVector(1:idx), sort(YourVector(idx+1:end), 'descend')];
else
  NewVector = YourVector;
end

Best Answer

Related Solutions

MATLAB: Molweight function gives wrong values

MATLAB: Sort a specific part of a row

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