how to increase matrix size

for example i have matrix size 5x3, i want to increase size of matrix became 10x3.

example my data :

A = [997.400000000000  -1.10000000000000  70.4000000000000
     997.500000000000  -1                  70
     997.600000000000  -1.50000000000000  72
     997.700000000000  -1.80000000000000  73.2000000000000
     997.800000000000  -1.80000000000000  73.6000000000000]

I want to my data like this :

A = [997.400000000000  -1.10000000000000  70.4000000000000
     NaN                NaN                     NaN
     997.500000000000  -1                  70
      NaN                NaN                     NaN
     997.600000000000  -1.50000000000000  72
      NaN                NaN                     NaN
     997.700000000000  -1.80000000000000  73.2000000000000
      NaN                NaN                     NaN
     997.800000000000  -1.80000000000000  73.6000000000000
      NaN                NaN                     NaN            ]

How to i solve this in Matlab....

Thanks you very much for the helping.

Answer 1

[Andrei Bobrov]

s = size(A);
P = cat(3,A,nan(s));
out = reshape(permute(P,[2 3 1]),s(2),[]).';

or

out = nan(size(A).*[2 1]);
out(1:2:end,:) = A;

[Innosens]

Thanks you very much.... your suggestion is working very well

Answer 2

[Jos (10584)]

Take a look at INSERTROWS:

insertrows(A,NaN,1:size(A,1))

http://www.mathworks.com/matlabcentral/fileexchange/9984

[Innosens]

I have try this function, it is working very well.... Thank you very much......