Let's talk about why vectors are accurate, because vector data is represented by points, that is, xy. As long as there are enough digits after the decimal point, it can be infinitely accurate.

Besides, why grid error is inevitable, because the grid, as its name implies, is to represent points with small grids. Unless the small grid is infinitely small, there must be errors, but due to the cost of computer storage and processing speed, it cannot be infinitely small.

Vector grids have their own advantages and disadvantages, and we can only learn from each other if we want to improve them. Vector grating mixing may be in one direction.