0x0 matrix.

3x3 matrix without zero rows and columns, row-wise normalization.
col 0: locations 0 to 1
0 : 0.75
1 : -1
col 1: locations 2 to 4
0 : 0.25
1 : -1.5
2 : 0.222222
col 2: locations 5 to 6
2 : 0.777778
1 : 3.5

3x3 matrix without zero rows and columns, column-wise normalization.
col 0: locations 0 to 1
0 : 0.6
1 : 0.4
col 1: locations 2 to 4
0 : 0.2
1 : 0.6
2 : 0.2
col 2: locations 5 to 6
2 : -1
1 : 2

3x3 matrix with zero rows and columns, row-wise normalization.
col 0: locations 0 to 0
0 : 1
col 1: locations 1 to 0
col 2: locations 1 to 1
2 : 1

3x3 matrix with zero rows and columns, column-wise normalization.
col 0: locations 0 to 0
0 : 1
col 1: locations 1 to 0
col 2: locations 1 to 1
2 : 1

uncompressed matrix.
