How to solve the error "Dimensions of arrays being concatenated are not consistent"

I have data of size 170x300 and want to create a matrix for the board of Game of Life but keep getting the error:

Error using vertcat
Dimensions of arrays being concatenated are not consistent

This is my code:

load Data %which the data of size 170x300
[N,M]=size(A)
B = zeros(N,N);
v1 = zeros(1,(N+2));
v2 = zeros(M,1);
A = [v1;v2 B v2;v1];

I did the same thing for a matrix of size N = 16 where the code was:

N=16;
B = zeros(N,N);
v1 = zeros(1,(N+2));
v2 = zeros(N,1);
A = [v1;v2 B v2;v1];

which work perfectly. What do I need to do differently for the bigger matrix? All help is appreciated!

Answer 1

[Walter Roberson]

v2 = zeros(N,1);

However, if you are just going to write all over A anyhow, and you are going to do so with the all-zero values, then

A = zeros(size(A,1)+2);

[Katara So]

Thank you! That seems to sort that problem out, however I get another error now that says:

Error in celldestiny (line 2)
n = numneighbours(A,i,j)

Error in Puffer_train (line 21)
celldest = celldestiny(A,i,j); 

where celldestiny is the function file I have all my rules in and the puffer train is my main file, which now looks like:

[N,M]=size(A);
A = zeros(size(A,1)+2);
C = round(rand(N,M));
A(1:170,1:300) = C;
Anew = zeros(size(A));
t = 0;
while sum((sum(A~=Anew))) > 0
if t > 0
A = Anew;
end
Anew = zeros(size(A));
for i = 2:170 
for j = 2:300 
celldest = celldestiny(A,i,j); 
Anew(i,j) = celldest; 
end
end

[Walter Roberson]

A = randi([0 1], N+2, M+2);
A([1 end], [1 end]) = 0;

....
for i = 2 : N+1
    for j = 2 : M+1
        Anew(i,j) = celldestinty(A, i, j);
    end
end

[Katara So]

I still get an error, I think it is because it says that i=2 instead of 170? But how do I fix that?

[Walter Roberson]

Perhaps it was because I spelt "celldestiny" incorrectly ?

[Katara So]

Haha no I fixed that :)

[Walter Roberson]

At what point is it saying that i = 2 when you expect it to be 170 ?

You posted that there is an error

Error in celldestiny (line 2)
n = numneighbours(A,i,j)

but you did not show what the error is and you did not show the code for numneighbours()

Watch out, by the way, for numneighbours() vs numneighbors() . "Neighbours" is of course the correct spelling, but we in Canada are quite accustomed to the people in the USA spelling it incorrectly.

[Steven Lord]

Sorry, Walter, we haven't finished implementing The Queen's MATLAB yet.