Using reshape function i get wrong ans....

 b=[0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1];
>> SS=reshape(b,length(b)/8,8);
>> SS

SS =

     0     0     0     0     0     0     0     0
     1     0     1     0     1     0     1     0
     0     0     0     0     0     0     0     0
     0     1     0     1     0     1     0     1

bt i want to get

SS =

     0     1     0     0     0     0     1     0
     0     1     0     0     0     0     1     0
     0     1     0     0     0     0     1     0
     0     1     0     0     0     0     1     0

ie what my array b data.. thats i want to be in SS.. how i write code? Help me

[Jan]

Where does the trailing zero column come from? It is not clear why the last and teh 2nd last column seem to have swapped.

Answer 1

[Andrei Bobrov]

b=[0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1];

SS=reshape(b,8,[]);
SS([end,end-1],:) = SS([end-1,end],:);
SS = SS';

[Guillaume]

I strongly suspect that the Arjun has got his example slightly wrong and that this step:

SS([end,end-1],:) = SS([end-1,end],:);

is unwanted. I.e, the correct answer is most likely:

SS  = reshape(b, 8, [])'

@Arjun, reshape rearranges the elements by column (since matlab is column major). So, the answer is to rearrange the elements in columns of 8 rows and then transpose.

[ARJUN K P]

ans Wrong....

[ARJUN K P]

 i didnt get the ans... help me

[Jan]

As your screen shot shows, you get exactly the answer you've asked for. If this is not the answer you want, please give us a chance to help you and post exactly, what you want.

[ARJUN K P]

sry its my mistake..

b=[0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,1]; i want to group each 8 bits in array b.. that is i want my ans like

     0     1     0     0     0     0     0     1
     0     1     0     0     0     0     0     1
     0     1     0     0     0     0     0     1
     0     1     0     0     0     0     0     1

[ARJUN K P]

thanku all i got ans.... special thanks to Andrei Bobrov code is working