How can I logically index 3 conditions in a loop

I have a simplified version of my data as;

d=[3 1
    4 1
    3 4
    4 4
    2 1
    3 1
    2 3
   1 3
   1 4];

first coloumn are the responses(1,2,3 or 4). second column are the error types(1,2,3 or 4).

I want to create a loop that gives me a logical matrix for indexing to use later in my analysis.

index_mat=if the first column is 3 or 4 and the second column is 1

index_mat2= if the first coloumn is 3 or 4 and the second column is 4

so I expect;

index_mat= 1 0 0 0 1 0 0 0

index_mat2= 0 1 1 0 0 0 0 0

Thank you

Answer 1

[Fangjun Jiang]

and(or(d(:,1)==3, d(:,1)==4),d(:,2)==1)

[Hatice Sahin]

It worked on my data. Thank you :)