Remove repeated row in a matrix (specially zero's repeated row)

a =

     1     4     6
     0     0     0
     6     7     3
     0     0     0
     3     1     2
     0     0     0
     0     0     0

Remove the repeated zero row.

I want this output

b=

     1     4     6
     0     0     0
     6     7     3
     3     1     2

[Anusha]

ADD part

a=

   [1     4     6
     0     0     0
     6     7     3
     0     0     0
     3     1     2
     0     0     0
     0     0     0
     1     0     0]

b=

     1     4     6
     0     0     0
     6     7     3
     3     1     2
     1     0     0

Answer 1

[Azzi Abdelmalek]

EDIT

a = [1     4     6
     0     0     0
     6     7     3
     0     0     0
     3     1     2
     0     0     0
     0     0     0]

idx=find(~any(a,2))
a(idx(2:end),:)=[]

[Anusha]

a=

   [1     4     6
     0     0     0
     6     7     3
     0     0     0
     3     1     2
     0     0     0
     0     0     0
     1     0     0]

if the matrix 1 0 0 row is in matrix means its also deleted in that code.. But it also include the output matrix

only 3 columns have zero means that repeated row only deleted

[Azzi Abdelmalek]

This is not clear

[Anusha]

Please see ADD part

[Azzi Abdelmalek]

Ok, try this

idx=find(~any(a,2))
a(idx(2:end),:)=[]