THIS INVENTION relates to a display. In particular, the invention relates to a display apparatus and a method of displaying information. BACKGROUND OF THE INVENTION The inventor is aware of display systems in vehicles and in other applications where information is to be displayed to a user in an easy understandable, clear and concise manner. However, in many instances a user is still required to interpret numbers or dials before the actual information relayed by such numbers or dials can be assessed. The present invention aims to address some of these shortcomings. SUMMARY OF THE INVENTION According to the invention, there is provided a display apparatus which includes input means operable to receive information for display; processing means operable to process the information received from the input means; display means, operable to display at least one figure of which the physical characteristics are based on processed information. The invention extends to a method of displaying information, which includes reading information for display; processing the information by generating a figure of which the physical characteristics are based on the processed information; and displaying the figure of which the physical characteristics represent the processed information. The input means may be in the form of a digital or analogue interface operable to receive an input signal which is to be displayed. For example, the interface may be in the form of an optical interface, an electrical interface, a magnetic interface, or the like, operable to receive discrete or analogue signals which are to be displayed. Reading information for display may thus include reading input signals from the interface ready to process the signals for display. Typically the input means may receive an input signal from a sensor, a remote processor, or the like. The processing means may be in the form of a digital processor, operable to assign a value to the input signal or to perform a mathematical operation on the value assigned to the input signal. For example, the input signal may be processed as a binary number, a discrete value, an analogue value, or the like. More particularly, if a mathematical operation is performed on the value, a derivative of the value may be taken, the value may be integrated, or another mathematical operation may be performed on the value. For example, the processing means may be operable to set limits for each signal value, to determine a rate of change of the signal value by mathematically taking the derivative of the signal value, to determine a cumulative value of the signal value by mathematically taking the integral of the signal value, by setting limits on the derivative or integral and to perform other mathematical operations on the signal values. In addition to performing mathematical operations on the signal values, the method may include prioritizing information comprising signal values by flagging information which exceeds certain predefined signal value limits or by summarizing different types of signal information on a single display. The physical characteristics of the figure may refer to any one or more of the shape of a two-, three-, or multi-dimensional figure, the colour of a figure, the geometry of a figure, or the like. In particular, the figure may be in the form of a geometrical shape of which the dimensions are determined by one or more of the processed signals. For example, if the figure is a circle, the radius may be determined by one of the signals, or it may be based on a processed value of one of the signals. Similarly, if the figure is a quadrilateral, the length of each side may each be determined by one of the signals, or may be based on a processed value of one of the signals. The figure may be in the form of a geometrical shape such as a circle, a triangle, a square, a pentagon, or the like. For the purposes of this invention, the sides of the geometrical shapes may each have different lengths. Furthermore depending on the value to be displayed, the figure may be based on a geometrical shape, but may be broken, i.e. one or more of the sides may be removed from the figure to indicate a particular status of an input value. Displaying a figure may include displaying a figure in a particular colour, in a particular line thickness or shape, displaying the figure in a static or a flashing fashion, or the like, depending on a particular status of an input value. The figure may include an icon, or may be associated with an icon. The figure may include limit indicators. For example, if a figure is in the form of a circle, the limit indicators may be in the form of other circles of which the radius is different. Alternatively, the limit indicators may be any type of figure and may be of a different line type, line colour, or the like. For example, the figure may be in the form of squares through which the circle's side passes. The method may include displaying the figure on a display in a peripheral sight of a viewer, such that when the physical characteristics of the figure changes, the viewer is able to detect such changes without directly looking at the figure.