GIS-3015 Chapter Notes - Chapter 2: United States Geological Survey, Lambert Conformal Conic Projection, Map Projection
Document Summary
Conversions between different units of measurement are also an important part of scale and distance calculations. Map scale is defined as the mathematical relationship between a unit of distance on the map and its corresponding distance on the ground. The ratio of map distance to ground distance, both in the same units of measurement, is called the representative fraction (rf) for the map. 1/x = map distance (md) / ground distance (gd) We will use this equation in the following scale problems. Hence, an rf of 1/24,000 means that 1 centimeter on the map represents 24,000 centimeters on the ground, 1 inch on the map represents 24,000 inches on the ground, and so on for other units of distance measurement. The rf can also be written as 1:24,000. Q1: convert the following representative fractions into a word statement: (hint; your answer to the parts a, b, and c of this question should be something like:
