Analysis of GIS Data by Simple Examination - Introducing Geographic Information Systems with ArcGIS - page 354

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FIGURE 6-1 Continuous phenomena FIGURE 6-2 Discrete phenomena

TABLE 6-1

Some Continuous Phenomena: Some Discrete Phenomena

Ramp Steps

Water (Liquid) Ice cubes

Time Days

Real numbers Integers, rational numbers

Musical representation—LP vinyl disk Musical representation—compact disc

Musical performance Musical score

Facial expressions Wink

Sloping land Terraces

Scrambled eggs Soft-boiled eggs

Ping-Pong Checkers

Meaning Words

Analog (rotary) watch Digital watch

Pond scum People

Poison gas Bullets

Belt-type people mover Automobile

Light dimmer (rheostat) Toggle switch

Steering (automobile) Turn signal (automobile)

Brake (automobile) Horn (automobile)

Pile of sulfur Load of bricks

Handwriting Typing

Slide rule (see Figure 6-3) Abacus (see Figure 6-3)

Analog computer Digital computer