How to XOR two cells from the same cell array?
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Abirami
on 18 Mar 2015
Commented: Michael Haderlein
on 18 Mar 2015
Hello,
I have one array of size 1x1024. I want to XOR each cell of the array. The first cell remains the same.It is as follows
Let T represent the position of each cell, then
CellT` = {Cell T XOR Cell(T-1) for T=2..1024
Cell T for T=1
Lets consider a 1x10 array.It is of the following form.
X= ['0000000000000001' '0000000000000010' '0000000000000011' '0000000000000100' '0000000000000101' '0000000000000110' '0000000000000111' '0000000000001000' '0000000000001001' '0000000000001010']
So I need to XOR the adjacent elements except the first one. Please help thanks in advance.
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Accepted Answer
Michael Haderlein
on 18 Mar 2015
With "cell", do you mean you have a cell array or do you refer to the elements of a normal logical array? I suppose second, then it's just
T =
1 1 0 0 1
>> XORT=xor(T(2:end),T(1:end-1))
XORT =
0 1 0 1
In case it's really a cell array, you can either translate the cell array into a normal array (cell2mat) or apply cellfun here:
>> Tc=num2cell(T)
Tc =
[1] [1] [0] [0] [1]
>> XORTc=cellfun(@(x,y) xor(x,y),Tc(2:end),Tc(1:end-1))
XORTc =
0 1 0 1
Hope that's answering your question!
2 Comments
Michael Haderlein
on 18 Mar 2015
With respect to your modified question, you can do the following:
>> T= {'0000000000000001' '0000000000000010' '0000000000000011' '0000000000000100' '0000000000000101' '0000000000000110' '0000000000000111' '0000000000001000' '0000000000001001' '0000000000001010'};
>> Tc=cellfun(@(x) x=='1',T,'uniform',false);
>> XORTc=[Tc(1) cellfun(@(x,y) xor(x,y),Tc(2:end),Tc(1:end-1),'uniform',false)];
The first use of cellfun translates the string arrays into logical arrays and the second performs the xor along with the concatenation with the first value of Tc.
More Answers (1)
Guillaume
on 18 Mar 2015
If you are operating on strings of '0' and '1', then the xor operation is the same as the ~= operation plus a conversion back to string.
binstrxor = @(binstr1, binstr2) char('0' + (binstr1 ~= binstr2));
Thus:
X = {'0000000000000001' '0000000000000010' '0000000000000011' '0000000000000100' '0000000000000101' '0000000000000110' '0000000000000111' '0000000000001000' '0000000000001001' '0000000000001010'};
Xxor = cellfun(binstrxor, X(1:end-1), X(2:end), 'UniformOutput', false)
Note that the strings must be the same length (same number of bits) for ~= to work.
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