Extract multiple matrices from an array by excluding specified numbers.

Let's say i got an array like [0 0 0 3 5 7 2 1 4 0 0 0 4 7 8 5 2 4] .

I want to build matrices excluding all zeroes and get 3x2 matrices with remaining values like

A = 3 2 & B= 4 5

5 1 7 2

7 4 8 4

How can this be done? Thanks.

Answer 1

[David Fletcher]

Will do the job in this case, but is not massively robust. Would need additional code to enforce the number of elements in the vector being reshaped if there is a chance it will not be a multiple of (six in this case)

vec=[0 0 0 3 5 7 2 1 4 0 0 0 4 7 8 5 2 4];

%Remove zeros
vec(vec==0)=[];
index=1;

for iter=1:6:numel(vec) 
    %Reshape remaining vector into a 3x2 and store
    mat(:,:,index)=reshape(vec(iter:iter+5),[],2);
    index=index+1;
end

mat(:,:,1)

ans = 3×2

3 2 5 1 7 4

mat(:,:,2)

ans = 3×2

4 5 7 2 8 4

[Görkem Bam]

Thanks for your quick reply