0
2
4
6
8
10
-1
-0.5
0
0.5
1
gs[0, :] -- spans both columns
0
2
4
6
8
10
-1
-0.5
0
0.5
1
gs[1, 0]
0
2
4
6
8
10
-0.4
-0.2
0
0.2
0.4
gs[1, 1]