Engineering Graphic Modelling

Translation into co-ordinates (encoding) and graphical representation

of these co-ordinates are important aids to demonstrating the

interdependence of the various parameters.

There may be many different sorts of parameters, such as the speed

of a sewing machine needle as a function of its position, the amount

of sagging in a load-bearing girder at each point in the girder, the

position of a machine part in a machine system, etc.

In turn the visual image provides the basis for vector algebra, which

is a mathematical way of representing what can be complex graphical

situations. The basic concept of representing a vector by components

paralle