How are courses and wales related to filling yarns and warp yarns?

Courses and Wales refer to the horizontal and vertical threads in a knitted fabric, respectively. Courses are the rows of stitches created by filling yarns, which run horizontally across the fabric, while wales are formed by warp yarns that run vertically. The interplay between these two types of yarns determines the fabric's texture, stretch, and overall structure, influencing its appearance and performance. Together, they create the foundational grid of knitted textiles.