Admin Table of Contents
- 1 Could a graphical or fractional scale be used to measure distances on a Mercator projection map explain?
- 2 Is distance accurate on Mercator?
- 3 How would you measured the distance scale on a Mercator chart is using?
- 4 How do you find the distance on a Mercator projection?
- 5 What is Mercator projection used for?
- 6 Why is Mercator projection used?
- 7 What are the disadvantages of a map projection?
- 8 What is the difference between gnomonic and Mercator?
Could a graphical or fractional scale be used to measure distances on a Mercator projection map explain?
Could a single graphic scale be used to measure distances on a Mercator projection? Explain. No, distance scale changes toward the poles.
Is distance accurate on Mercator?
If you perform measurements in the Mercator projection or the Google/Bing/ArcGIS Online variation thereof, your results will likely be much larger than you intended. The farther away from the Equator you get, the more distorted your measurements will be.
What type of charts is the Mercator projection used on?
This projection is widely used for navigation charts, because any straight line on a Mercator projection map is a line of constant true bearing that enables a navigator to plot a straight-line course.
What is one disadvantage of the Mercator map projection?
Disadvantages: Mercator projection distorts the size of objects as the latitude increases from the Equator to the poles, where the scale becomes infinite. So, for example, Greenland and Antarctica appear much larger relative to land masses near the equator than they actually are.
How would you measured the distance scale on a Mercator chart is using?
On a Mercator chart, the latitude scale on the sides of the chart serves as the distance scale. It’s worth remembering that only the vertical, latitude scale on a Mercator chart can be used to measure distance, not the horizontal longitude scale.
How do you find the distance on a Mercator projection?
1 Answer
- short lines, just calculate one scale factor.
- 2–4 km lines, calculate an average scale factor, of the two ends.
- long lines, use the Simpson rule: average scale factor, S = (S1 + 4 Sm + S2) / 6. in other words, one sixth of each of the two end factors plus two thirds of the middle factor.
How does Mercator chart measure distance?
What is the Mercator map used for?
In 1569, Mercator published his epic world map. This map, with its Mercator projection, was designed to help sailors navigate around the globe. They could use latitude and longitude lines to plot a straight route.
What is Mercator projection used for?
Description. Mercator is a conformal cylindrical map projection that was originally created to display accurate compass bearings for sea travel. An additional feature of this projection is that all local shapes are accurate and correctly defined at infinitesimal scale. It was presented by Gerardus Mercator in 1569.
Why is Mercator projection used?
In 1569, Mercator published his epic world map. This map, with its Mercator projection, was designed to help sailors navigate around the globe. They could use latitude and longitude lines to plot a straight route. Mercator’s projection laid out the globe as a flattened version of a cylinder.
Could a graphic scale be used to measure distances on Mercator?
A straight line. Could a single graphic scale be used to measure distances on a Mercator projection? Explain. No, distance scale changes toward the poles. Do all of the parallels and meridians cross each other at right angles?
Does Google’s Mercator projection minimize distortion?
The modified Mercator projection used by Google, Bing, and ArcGIS Online is not designed to minimize distortion at all. Instead, it was engineered for convenience in working with cached map tiles. This projection fit the entire globe (well, most of the latitudes anyway) into a square area that could be covered by 256 x 256 pixel tiles.
What are the disadvantages of a map projection?
Every map projection causes distortion of shapes, areas, directions, and/or distances. Some projections such as Robinson or Winkel Tripel attempt to minimize distortion across the world through some compromise of all those factors.
What is the difference between gnomonic and Mercator?
Gnomonic used to determine the shortest route; Mercator used to plot a series of rhumb lines to closely follow great circle route. Exercise 7: Landscape Analysis with Google Earth &…