How to use Matlab to fill gaps

If I have matrix in this shape. M =[0 0 0; 2 2 3; 3 3 0; 0 0 0; 3 3 0; 2 2 3; 0 0 0; 3 3 2; 0 0 0; 3 3 3] How can I fill: 3 0 0 3 —> 3 3 3 3 3 0 3 0 2 —> 3 3 3 0 2 3 0 3 2 0 3 0 3 —> 3 3 3 2 0 3 3 3 Regards in advance for sharing knowledge

[darova]

I can't understand the logic. What should i do?

[M.S. Khan]

Dear M.k, I we have M matrix. How to fill the gaps column by column among 3s by 3s

[M.S. Khan]

I am using interpol1() ruction but it is not filling gaps

[darova]

What is 'gap'?

Answer 1

[Matt J]

This might be what you are looking for

 Mnew=M;
[nr,nc]=size(M);
 xq=(1:nr).';
 
 for i=1:nc
    
     m=M(:,i);
     
     [x,~,y]=find(m);
     
     vals=interp1(x,y,xq);
     m((m==0)&(vals==3))=3;
     
     Mnew(:,i)=m;
 end

M, Mnew

M =

     0     0     0
     2     2     3
     3     3     0
     0     0     0
     3     3     0
     2     2     3
     0     0     0
     3     3     2
     0     0     0
     3     3     3


Mnew =

     0     0     0
     2     2     3
     3     3     3
     3     3     3
     3     3     3
     2     2     3
     0     0     0
     3     3     2
     3     3     0
     3     3     3

[M.S. Khan]

Thanks Dear Matt. Warm regards