Austin, here you go:
function [p] = Findfirst(A,currentRow)
[m n]=size(A);
p=n;
for i=currentRow:m
for j=1:n
if A(i,j)~=0
p=j; % you wanted to get the col index, right?
break; % break out once you have your solution
end
end
end
end
A bit more compact...
function [p] = Findfirst(A)
p = [];
for ii = 1:length(A(1,:))
if ~isempty(find(A(:,ii)))
p = ii;
break;
end
end
end
For small-size matrices you could also
[r c] = find(A);
p = min(c);
