Sorry, I'm not sure I understand correctly.
For example if I have a sprite of 1000x1000 (100 frames of 100x100), if I set spriteX to 100, I can use offsetX = 2 to display the frame at [200px, 0px]?

So will this be correct?
*X-axis index value of the sprite frame to display. This value will be multiplied by the frame width, and used by the offsetX option.*