How to convert logical into decimal number?

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Anisa 2013-1-13

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https://ww2.mathworks.cn/matlabcentral/answers/58657-how-to-convert-logical-into-decimal-number

I have matrix C size 1x1013 cell. Each cell has different size.

 <1x16 logical> <1x53 logical> <1x41 logical> <1x37 logical> <1x50 logical> <1x48 logical> and so on.

I want to convert each cell on matrix C into decimal number. I have tried use bin2dec but it doesn't worked.

For anyhelp, thank you.

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Anisa 2013-1-26

I'm so sorry Jan. I didn't mean to ignore them. I'm a newbie here and still learn how to use matlab. I'm sorry.

And thank you for the solution. I already try it. Thank you.

Carlos Lara 2013-7-2

I think .. It could be solved by using the 'bitset' function

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采纳的回答

Jan 2013-1-13

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https://ww2.mathworks.cn/matlabcentral/answers/58657-how-to-convert-logical-into-decimal-number#answer_70973

在 MATLAB Online 中打开

Assuming that the highest significant bit comes on the left:

C = {logical(randi(2,1,10) - 1), logical(randi(2,1,40) - 1)};
P2 = transpose(2 .^ (52:-1:0));
D  = zeros(size(C));
for iD = 1:numel(D)
  aC    = C{iD};
  D(iD) = aC * P2(54 - length(aC):53);
end

This is much more efficient than converting the logical vector to a string, the string to a double vector (inside bin2dec) and wrap this by cellfun and a slow anoymous function. I am really a fan of cellfun, but only, if it is efficient.

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Walter Roberson 2013-1-16

Are you looking for strings as output, or numeric values? If you are looking for numeric values as output, you are not going to be able to produce that for more than 53 bits, fewer if you want to encode your numeric base in decimal (e.g., 333 decimal to mean 4^3 - 1 in base 4).

Longer numbers can be constructed as symbolic numbers if you have the symbolic toolbox, or there is John D'Errico's vpi (Variable Precision Integer) contribution.

Jan 2013-1-16

@Anisa: It would be helpful, if you answer the questions in the comments. Please explain, what you exactly want as output and do not let us guess the details. Thanks.

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