MATLAB: How to use if statement in cells

binarycellcell arraysmatrix

Hello I have doubts in using if condition in matlab.I have to perform the following operation in a cell.
     Final={ S1 if B{i}=11
             S1 if B{i}=10
             S2 if B{i}=01
             S2 if B{i}=00
I have the 2 bit binary values as a 128×17 cell. How to perform this and create a new matrix Z where i get the values of S1 and S2.
     B= 00 10 11 10 11 
        01 01 01 01 11 
        10 00 01 00 01 
        10 10 01 01 11 
        10 10 10 00 10
and if
     S1= 21 
         23
         28 
         25 
         43 
     S2= 96 
         85 
         78 
         65 
         76
For each binary value, the corresponding S value should be present.So my Z would be
      Z = s2 s1 s1 s1 s1   
          s2 s2 s2 s2 s1
          s1 s2 s2 s2 s2
          s1 s1 s2 s2 s1
          s1 s1 s1 s2 s1
    ie Z= 96 21 21 21 21 
          85 85 85 85 23 
          28 78 78 78 78
          25 25 65 65 25
          43 43 43 76 43
ie; with the values of S1 and S2, the data in B is to be replaced.please help. thanks in advance

Best Answer

It is not clear exactly what format your "binary" data are in, I assumed that they are strings. This script creates the matrix Z as you indicate:
B = {'00','10','11','10','11';...
     '01','01','01','01','11';...
     '10','00','01','00','01';...
     '10','10','01','01','11';...
     '10','10','10','00','10'};
S1 = [21;23;28;25;43];
S2 = [96;85;78;65;76];
%
C = cellfun(@bin2dec,B)>1.5;
[r,~] = find(C);
Z(C) = S1(r);
[r,~] = find(~C);
Z(~C) = S2(r);
Z = reshape(Z,size(C))
When I run the script, it display this in my command window:
Z =
      96    21    21    21    21
      85    85    85    85    23
      28    78    78    78    78
      25    25    65    65    25
      43    43    43    76    43
EDIT: For slightly more compact code, this is equivalent:
C = cellfun(@bin2dec,B)>1.5;
Z(C) = S1(1+rem(find(C)-1,size(C,1)));
Z(~C) = S2(1+rem(find(~C)-1,size(C,1)));
Z = reshape(Z,size(C))
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