This file was generate using the following parameters:

Repeat function: aababb

Southwest corner = (-4.000000,-4.000000) or (2.500000,1.500000)

Northeast corner = (4.000000,2.250000) or (4.500000,3.062500)

Resolution = 4000; XGRID = 1152,YGRID = 900

Notes: 
1) picture rotated counterclockwise 90 degrees
2) I'm not sure which set of coordinates were used for this
   particular picture