How to convert a nucleotide sequence data into complex number form such that base A= 1+i, G=1-i, C= -1-i and T=-1+i

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Shiwani 2012-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/33345-how-to-convert-a-nucleotide-sequence-data-into-complex-number-form-such-that-base-a-1-i-g-1-i-c

评论： nik hamizah hanif 2015-2-21

I wish to convert a nucleotide sequence data in the form of nucleotide bases like [ACCCTTTTGGACT...] into a complex number representation such that A base can be replaced by complex number 1+i, base G can be replaced by 1-i, base C can be replaced by -1-i and T can be replaced by -1+i. though a direct conversion instruction nt2int(seq) converts the sequence into uint8 data. But i need the conversion in complex number form and also need to add the resulting sequence in cumulative form so that other mathematical operations can be performed on the resulting sequence.

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Answer 1

Razvan 2012-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/33345-how-to-convert-a-nucleotide-sequence-data-into-complex-number-form-such-that-base-a-1-i-g-1-i-c#answer_41941

在 MATLAB Online 中打开

function J = convert2complex(S)
  I = nt2int(S);
  J = nan(size(I));
  J(I == 1) = 1+1i;
  J(I == 2) = -1-1i;
  J(I == 3) = 1-1i;
  J(I == 4) = -1+1i;
end