I have a matrix which looks like A = [1 NaN 1 ; NaN 1 2; NaN 1 2]; How can I remove all NaN's from the A matrix?

A = [1 NaN 1 ; NaN 1 2; NaN 1 2];

Answer 1

[madhan ravi]

A = [1 NaN 1 ; NaN 1 2; NaN 1 2];

A(isnan(A))=[] ; 

A = reshape(A,3,2)

command window:

>> COMMUNITY      

A =

       1     1
       1     2
       1     2

>>

[madhan ravi]

if this is what you are looking for accept the answer so that people know the question is solved else let know

[Rubel Ahmed]

Thanks, Actually, I want the Matrix-like A = [1 1;1 1;1 2]

[madhan ravi]

see edited answer

[madhan ravi]

B = [1 NaN, NaN,3,1;1 NaN, 1,NaN,1;1 NaN, 1,NaN,1;1 NaN, NaN,NaN,1;1 NaN, 2,NaN,1]
B(isnan(B))=[]
a=factor(numel(B));
m = max(a);
n=min(a);
reshape(B,m,n)

Answer 2

[Rubel Ahmed]

Thanks mate , but If I have a matrix like B = [1 NaN, NaN,3,1;1 NaN, 1,NaN,1;1 NaN, 1,NaN,1;1 NaN, NaN,NaN,1;1 NaN, 2,NaN,1]; removing all NaN's from B,how can I reshape this matrix?

Answer 3

[Rubel Ahmed]

Hi ravi,

please see the image. From the figure, the non-NaN elements of first row, are the neighbour particles of the first particle(1). then the non-NaN elements of second row, are the neighbour particles of the second particle. and so on. So I want to see the list of neighbour particles for particle 1 from first row which are 1 2 3 5 6 9. for the second row, I am happy to see like 1 2 3 4 5 6 7 , 3rd row will be like 1 2 3 4 6 7 8 12.