The x value should be the north-south value, increasing as you move north. The y value should be the east-west value, increasing as you move west. Therefore, the smallest x and y values are to the southeast and the largest values are to the northwest. At least, this is how .WLD files are coded.
Basically, EQ uses a "right-handed" coordinate system. Take your right hand and extend your forefinger, middle finger, and thumb at right angles to each other (forefinger pointing away from you, middle finger pointing to your left, and thumb pointing up). Your forefinger would represent the x axis, your middle finger the y axis, and your thumb the z axis. Your forefinger would be pointing north, your middle finger pointing west, and your thumb pointing up.
Wind
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