How to compare pair of rows in a column and report it in hexadecimal format

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Farhan K 2020-2-27

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https://ww2.mathworks.cn/matlabcentral/answers/507792-how-to-compare-pair-of-rows-in-a-column-and-report-it-in-hexadecimal-format

评论： Mohammad Sami 2020-2-27

采纳的回答： Mohammad Sami

Hello,

I have a 512x1 matrix (512 rows and 1 column)

The value of ROW1 should be compared with ROW2, similarly ROW3 with ROW4, etc. I have to compute this 256-bit response and report it in hexadecimal format assuming; if ROW1 > ROW2 then 1 & if ROW2 > ROW1 then 0

In this way I will get 256x1 from this.

Please advise!

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Mohammad Sami 2020-2-27

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https://ww2.mathworks.cn/matlabcentral/answers/507792-how-to-compare-pair-of-rows-in-a-column-and-report-it-in-hexadecimal-format#answer_417530

data = rand(512,1);
oddrows = data(1:2:end);
evenrows = data(2:2:end);
response1 = oddrows > evenrows;
response2 = evenrows > oddrows;
response1 = char(response1' + '0');
response2 = char(response2' + '0');
% download bin2hex function from matlab file exchange
% https://www.mathworks.com/matlabcentral/fileexchange/1975-bin2hex
response1hex = bin2hex(response1);
response2hex = bin2hex(response2);

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Mohammad Sami 2020-2-27

response1 = oddrows > evenrows

this would give u the 256 x 1 logical vector

value would be 1 where oddrow is greater then even row and 0 otherwise.

Mohammad Sami 2020-2-27

If you want the values you can do the additional step

response1 = oddrows > evenrows;
values = zero(length(response1),1);
values(response1) = oddrows(response1);
values(~response1) = evenrows(~response1);

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