Engineering Graphic Modelling

5.11

TYPES OF DRAWING

GRAPHS (Polar co-ordinate system)

required

function

I

structure

form

material

dimension

surface

I

properties

achieved

required

function

I

structure

form

material

dimension

surface

I

properties

achieved

Term

Polar plot, graph in polar co-ordinates.

Use

A drawing of the relationship between two parameters, one being a

function of the

other.

Normally used where a value can be related to

an angular position or where a relationship is represented by complex

variables on an argand diagram.

Characteristics

Any point on the curve is decided by a direction from the zero line

(the polar axis), and a distance from a zero point (th ...