How to split binary cells and convert them to dec?

Question

MKM 2022-1-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1635715-how-to-split-binary-cells-and-convert-them-to-dec

回答： Stephen23 2022-1-25

采纳的回答： zhehao.nkd

I have a cell array consisting of binary 100x1 e.g

{'0100101000101000'}

...

{'0100101000101000'}

How do i take the first 3 binary from each cell and then convert it into dec?

maybe a cellfun can be helpful here but i do get some errors

I know you can use bin2dec i should expect a 2 for every cell.

Thanks!

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Answer 1

zhehao.nkd 2022-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/1635715-how-to-split-binary-cells-and-convert-them-to-dec#answer_881320

在 MATLAB Online 中打开

C{1} = {'0100101000101000'};
C{2} = {'0100101000101000'};
C{3} = {'0100101000101000'};

if C is your original cell, then:

cellfun(@(x) bin2dec(x{1}(1:3)),C)
ans = 1×3
     2     2     2

Is that what you need?

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MKM 2022-1-25

在 MATLAB Online 中打开

Perfect, I actually managed to do this myself eventually. My version of it is:

binarystrip = cellfun(@(x) x(1:3), C, 'uniformoutput',false)
x = bin2dec(binarystrip)

Thanks for the input too.

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Answer 2

Stephen23 2022-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/1635715-how-to-split-binary-cells-and-convert-them-to-dec#answer_881345

在 MATLAB Online 中打开

More efficient than using CELLFUN:

C = {'0100101000101000';'0100101000101000';'0100101000101000';'0100101000101000'}
C = 4×1 cell array
    {'0100101000101000'}
    {'0100101000101000'}
    {'0100101000101000'}
    {'0100101000101000'}
V = [4,2,1]*sscanf(sprintf('%s ',C{:}),'%1d%1d%1d%*d',[3,Inf])
V = 1×4
     2     2     2     2