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What is RF in scale?
Representative Fraction (R.F.): An R.F. scale is a ratio, or fraction, that expresses the mathematical relationship between MAP and LAND, such as 1 : 24,000. which means “1 map unit is equivalent to 24,000 land units.”
How is RF used to determine distance on a map?
The numerical scale of a map indicates the relationship of distance measured on a map and the corresponding distance on the ground. An RF of 1/50,000 or 1:50,000 means that one unit of measure on the map is equal to 50,000 units of the same measure on the ground.
What is advantage of RF in geography?
In representative fraction (RF), the scale on the map is expressed in the numerical fraction. Its advantage is that it has universal application. Even people who live in foreign countries can find the distance on the map even if they are not familiar with the units of measurements of that country.
How do you convert RF to scale?
CONVERSION OF SCALE Statement scale to R.F. Convert the given Statement of Scale of 1 inch represents 4 miles into R. F. R.F. is 1:253,440 • Convert the given scale of 1cm represents 120 km into R.F.
What are the 3 types of scale?
Three Types of Scale:
- Fractional or Ratio Scale: A fractional scale map shows the fraction of an object or land feature on the map.
- Linear Scale: A linear scale shows the distance between two or more prominent landmarks.
- Verbal Scale: This type of scale use simple words to describe a prominent surface feature.
What is RF What is the advantage of RF?
Following are the advantages of RF: ➨It has different penetration through the walls of the buildings or houses based on the frequency. Hence used for radio and television transmission and for cellular mobile phone service. ➨Used in various medical applications.
How many miles is 4 inches on a map?
Map Scale Equivalents
| Map Scale | Miles to Inches |
|---|---|
| 1:200,000 | 3 miles = 1 inch |
| 1:253,000 | 4 miles = 1 inch |
| 1:300,000 | 5 miles = 1 inch |
| 1:350,000 | 5.5 miles = 1 inch |
How do you calculate RF on a map?
To find out the RF of the current map, simply look at the Map Scale drop down on the top bar menu. The representative fraction for the map is shown along the top bar menu in ArcMap. To insert an RF on your map, click Insert on the top bar menu, then select Scale Text.
What is RF full form?
Radio Frequency (RF) is a rate of oscillation in the range of about 30 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals.
What is RF write its significance?
A representative fraction (RF) is the ratio of distance on the map to distance on the ground. An RF of 1:24,000 means one inch on the map equals 24,000 inches on the ground and one centimeter on the map equals 24,000 centimeters on the ground. RFs are easy to determine and to insert in ArcMap.
How do you calculate RF scale?
Explanation: The representative factor given is 0.02 (less than one), shows the reducing scale. Representative factor = ratio of length in drawing to actual length. R.F. = (length in drawing)/50 cm = 0.02.
What are the 2 types of scales?
There are two main types of measurement scales, namely; comparative scales and non-comparative scales.
How to find the RF of a map?
RFs are easy to determine and to insert in ArcMap. To find out the RF of the current map, simply look at the Map Scale drop down on the top bar menu. The representative fraction for the map is shown along the top bar menu in ArcMap. To insert an RF on your map, click Insert on the top bar menu, then select Scale Text.
What do you mean by RF scale in geography?
Quora User, Geography is colors. R. F. is representation factor. RF scale is simply the units of land represented on a map. If suppose you have 1 km of length on land and you chose to represent it on a map its is necessary to reduce it by some factor.
What is a representative fraction ( RF ) in ArcMap?
Representative fractions are a unit-less relation between one “unit” on the map and how ever many “units” of the same type on the ground. An RF of 1:24,000 means one inch on the map equals 24,000 inches on the ground and one centimeter on the map equals 24,000 centimeters on the ground. RFs are easy to determine and to insert in ArcMap.
Where does the RF go on a page?
The font size used for the RF should be some of the smallest on the page. If you use an RF with a scale bar, you should place it directly above or below the scale bar. Which you choose will be determined by the layout of your map, but usually the RF is shown above the scale bar.