Re: [Gretl-users] A Matrix Question
Henrique Andrade a écrit :
<script>
matrix R = zeros(12,1)
loop i=6..12
R_$i = r[$i,1] + r[$i-1,2]+ r[$i-2,3]+ r[$i-3,4]+ r[$i-4,5]+ r[$i-5,6]
R[i] = R_$i
end loop
</script>
Hi Henrique,
Well, what do you think about the following general form :
<script>
matrix R = zeros(dim1,dim2) # In your exemple dim1=12 and dim2=1
loop k = 1..dim2
loop i = k+1..dim1
loop j = 1..(k+1)
R[i,k] = R[i,k] + r[1+i-j,j]
endloop
endloop
endloop
</script>
Artur