Parallel coordinates use two or more parallel axes. In two dimensions, points are lines and lines are points. Various interpretations of geometrical structures are possible. Interaction can be supported in various ways.
Color is useful for distinguishing lines.
Patterns can be picked up using slopes and corners. Touring can also be used in parallel coordinates. The points can be scaled before this formula is applied. The y value can be viewed as the length of the projection on a line. Changing t moves the line on a curve through space.