The choice of the function y ( φ) for the Mercator projection is determined by the demand that the projection be conformal, a condition which can be defined in two equivalent ways: Equality of angles. The condition that a sailing course of constant azimuth α on the globe is mapped into a constant.... Mercator-projektion är en kartprojektionsmetod som är vanligt förekommande, exempelvis på världskartor och sjökort. Den bevarar riktningar korrekt. Eftersom en kompasskurs mellan två punkter på kartor av detta slag bildar en rät linje ( loxodrom ), används de ofta för sjökort. Det är dock inte kortaste vägen The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer Gerardus Mercator in 1569. This map projection is practical for nautical applications due to its ability to represent lines of constant course, known as rhumb lines, as straight segments that conserve the angles with the meridians Mercator projection, a map projection introduced by Flemish cartographer Gerardus Mercator in 1569. The Mercator projection is a useful navigation tool, as a straight line on a Mercator map indicates a straight course, but it is not a practical world map, because of distortion of scale near the poles . The Mercator projection is a map projection that was widely used for navigation since loxodromes are straight lines (although great circles are curved). The following equations place the x-axis of the projection on the equator and the y-axis at longitude, where is the longitude and is the latitude
Web Mercator, Google Web Mercator, Spherical Mercator, WGS 84 Web Mercator or WGS 84/Pseudo-Mercator is a variant of the Mercator projection and is the de facto standard for Web mapping applications. It rose to prominence when Google Maps adopted it in 2005. It is used by virtually all major online map providers, including Google Maps, Mapbox, Bing Maps, OpenStreetMap, Mapquest, Esri, and many. Gerardus Mercator (eg.Gerhard de Kremer;  namnet Kremer betyder handlare, vilket på latin blir Mercator), född 5 mars 1512, död 2 december 1594, var en nederländsk kartograf.Mercator har gett namn åt Mercator-projektionen, en projektion som han också tog fram.Den är en vinkelkorrekt (men inte ytkorrekt) projektion vilket ger stor användbarhet som sjökort Drag and drop countries around the map to compare their relative size. Is Greenland really as big as all of Africa? You may be surprised at what you find! A great tool for educators Mercator Puzzle Redux. Drag the shapes to their correct location. If you don't know the position of a country, double click it to let the computer place it. Hit refresh to get a new set of shapes Mercator projection definition is - a conformal map projection of which the meridians are usually drawn parallel to each other and the parallels of latitude are straight lines whose distance from each other increases with their distance from the equator
Originally created to display accurate compass bearings for sea travel, an additional feature of this projection is that all local shapes are accurate and clearly defined. A sphere-based version of Mercator is used by several web mapping sites. The sphere's radius is equal to the WGS 1984 semimajor axis, 6378137.0 meters The Web Mercator coordinate system is also known as Google Web Mercator, Spherical Mercator, WGS 84 Web Mercator, and Pseudo-Mercator. It is the de facto standard for web maps and online services. With this coordinate system, the geodetic coordinates defined on the WGS 84 datum are projected as if they were defined on a sphere, using a sphere-based version of the Mercator projection The mercator projection is a commonly used projection on computer maps because it has perpendicular latitude and longitude lines (forming rectangles). It is formed by projecting the globe onto a cylinder A variant of the was adopted by Google maps,. With any map projection style, the big challenge lies in depicting a spherical object as a 2D graphic. There are various trade-offs with any map style, and those trade-offs can vary depending on how the map is meant to be used. In 1569, the great cartographer, Gerardus Mercator, created a revolutionary new map based on a cylindrical projection
Mercator. Specified in [square brackets]: Actual size of the projection (minus the black or white background). When marked with [≈], sizes with and without background are approx. the same The projection of Mercator is a cylindrical cartographic projection that represents the whole terrestrial surface. It was developed by Gerardus Mercator in the sixteenth century, in the year 1569 List of the Cons of Mercator Projection. 1. It forces the map to create a distortion away from the equator. Linear scale is constant on a Mercator projection in every direction, preserving the shapes and angles of small objects effectively. This fulfills the conditions of a conformal map projection The Mercator projection was developed in 1569 by Gerardus Mercator as a navigational tool. This map's grid is rectangular and lines of latitude and longitude are parallel throughout A cylindrical projection of the Earth's surface developed by Gerhardus Mercator. As in other such projections, the areas farther from the equator appear larger, making the polar regions greatly distorted. However, the faithful representation of direction in a Mercator projection makes it ideal for navigation. See more at cylindrical projection
The Mercator projection is everywhere. If you went to public school any time before 1991, this is the map projection that told you Greenland was the size of Africa, Alaska was bigger than Brazil,.. This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License. This means you're free to copy and share these comics (but not to sell them). More details.
The Mercator projection was invented by Gerardus Mercator, a Flemish mapmaker. His name is a latinized version of Gerhard Kramer. This is his famous world map of 1569. A modern Mercator projection map. The property of the Mercator projection map that made it useful to navigators is that it preserves angles The Mercator uses an upright cylinder for its map projection. The Transverse Mercator takes a cylinder and places it on its side (rotates it 90°), as pictured below - which is how the term transverse is derived. However, the Universal Transverse Mercator places this cylinder 60 times for each UTM zone Modeled and animated by Grafonaut. Video as part of a course by Emarin Norway. Explaining the sacrifices made to convert the earths spherical surface into a. EPSG:3857 Projected coordinate system for World between 85.06°S and 85.06°N. Uses spherical development of ellipsoidal coordinates. Relative to WGS 84 / World Mercator (CRS code 3395) errors of 0.7 percent in scale and differences in northing of up to 43km in the map (equivalent to 21km on the ground) may arise. Certain Web mapping and visualisation applications
Diskussion om 'Mercator projection' i English Only forumet. Se Google Översätts automatiska översättning av 'Mercator projection' The Mercator Map. The map most commonly used in the world is the Mercator map. This is the map that we see in classrooms all over the world. This is also the map that formulates our basic ideas of what our planet looks like. In fact, even Google Maps uses the Mercator map. To be completely honest, it IS a convenient map (A projection is the way in which the globe or any portion of it is represented on a flat surface.) Mostly, when people think of the map of the world, they have the Mercator projection in mind. It looks like this. The Mercator projection was created by Gerardus Mercator, a 16 th century Flemish cartographer [lon, lat] = mercator(x,y,1), -> Inverse Mercator Projection (when you enter extra parameter 1, the inverse is calculated Input: x: This must be the 'x' value output by the first call to the mercator function. It cannot be scaled by anything at this point if you had scaled it before, you must scale it back
His most famous work, the Mercator projection, is a geographical chart where the spherical globe is flattened into a two-dimensional map, with latitude and longitude lines drawn in a straight grid. Mercator's view of the world is one that has endured through the centuries and still helps navigators today A facility for converting latitude/longitude co-ordinates to co-ordinates in metres on a Transverse Mercator projection. Note: The results of using the calculator provided on this page are believed to be accurate to 1 metre, but the accuracy is not in any way guaranteed. The results will certainly not, however, be accurate to 1 metre in situations. The Mercator projection All maps involve decisions. Whenever you compress real life onto something smaller and less detailed you have to choose what to keep in and what to leave out The Mercator Projection was one of the first important maps created by Europeans.It was produced by Gerard Mercator, a Flemish mapmaker who lent his name to his famous work. On such a map, the east-west and north-south lines are straight lines. Because the world is round, this makes for some not-so-accurate geographical representations mercator projection In the Mercator projection , the meridians form a rectangular grid of straight vertical lines, while the parallels form straight horizontal lines (Figure 3). The meridians are evenly spaced, but the spacing between parallels increases at higher latitude so that the spacing at 60° is double that at the Equator
http://en.wikipedia.org/wiki/Mercator_projection Look at the map - the areas around the poles are scaled up compared to the equator. Depending on what you want to do, you'd be better of using a standarized projection, like UTM. You should check which projection is used in the part of the world where your maps are from A description of how cylindrical projections are develope . This was the very beginning of a global age; the Mercator connected the world through navigation in ways never thought possible
A method of making a flat map of the Earth's surface so that the meridians and parallels appear as straight lines that cross at right angles. In a Mercator projection, the areas farther from the equator appear larger, making the polar regions greatly distorted. Compare conic projection, homolosine projection, sinusoidal projection Mercator chart synonyms, Mercator chart pronunciation, Mercator chart translation, English dictionary definition of Mercator chart. Mercator projection n. A cylindrical map projection in which the meridians and parallels appear as lines crossing at right angles and in which areas appear.. Yes, there is a standard Mercator projection. However, as with (almost) any other projection designed for the earth's surface, it can use different ellipsoidal models and has different aspects:. The ellipsoidal model describes an idealized shape (and size) of the earth. Most projections have formulas that apply to any ellipsoid of rotation, whose shape is determined by its flattening (or an. The Transverse Mercator projection illustrated above (Figure 2.22.2) minimizes distortion within UTM zone 30. Fifty-nine variations on this projection are used to minimize distortion in the other 59 UTM zones. In every case, distortion is no greater than 1 part in 1,000
Because the Earth is roughly spherical, every flat map distorts our planet one way or another. The most popular version is the Mercator projection, created by Flemish cartographer Gerardus Mercator.. Spherical Mercator¶. This document describes the Spherical Mercator projection, what it is, and when you should use it. It includes some background information, demonstration of using the code with just a commercial layer, and how to add a WMS over the top of that layer, and how to reproject coordinates within OpenLayers 2 so that you can reproject coordinates inside of OpenLayers 2 2008/08/05 - Google Support thread on the use of Web Mercator in which it's noted (less technically) that the projection formerly used by Google Maps did not preserve azimuth at high latitudes.  - ESRI ArcGIS 10 changed the WKID for this projection from ESRI:102100 to EPSG:3857 [8 In a Mercator Projection, a bearing of 312 points you in a straight line. This isn't true of other projections. Reason (II): Locally, the Mercator Projection preserves the shape of an object. This is the reason why internet world maps tend to use the Mercator Projection or a slight variation thereof
Using the Web Mercator map projection allows us to use rectangular map tiles to dynamically load appropriate levels of detail as the map is zoomed in and out, allowing for a richer and more. A good way to visualize the transverse Mercator projection over the entire global is using tm-grid.kmz, which is a Google Earth KML file showing the transverse Mercator grid (in red) for the WGS84 ellipsoid with grid spacing 1000 km in the x and y directions Mercator Projection Addon. Install the addon. To use the addon, have a spherical mesh in edit mode. From Mesh > UV unwrap menu choose Mercator Project. Set the minimum and maximum latitudes of your mercator map, in the example image world map that's from -69.814 degrees (south), to 85 degrees north Originally designed for use in nautical navigation, Mercator's projection is a map of the Earth's surface on which straight lines, called rhumb lines, represent a course of constant compass heading. On the surface of a sphere, however, such rhumb lines are not the shortest distance between two points Mercator. Without a doubt, the most famous map projection is the Mercator projection. In fact, the Mercator projection was the first projection regularly identified in atlases. It is a cylindrical map projection that is a product of its time. During the sixteenth century, new geographic information was pouring in from around the world, trade routes were being established, and sailors.
The Mercator projection creates increasing distortions of size as you move away from the equator. As you get closer to the poles the distortion becomes severe. Cartographers refer to the inability to compare size on a Mercator projection as the Greenland Problem Gerardus Mercator, Flemish cartographer whose most important innovation was a map, embodying what was later known as the Mercator projection, on which parallels and meridians are rendered as straight lines spaced so as to produce at any point an accurate ratio of latitude to longitude. He als What does mercator-projection mean? A cylindrical map projection in which the meridians and parallels appear as lines crossing at right angles and in which.
The Mercator projection is a cylindrical map projection presented by Flemish geographer and cartographer Gerardus Mercator in 1569. It became the standard map projection for navigation because it is unique in representing north as up and south as down everywhere while preserving local directions and shapes. The map is thereby conformal one of the cartographic projections. The Mercator projection is equiangular and cylindrical. In this projection all the loxodromes—lines on a sphere intersecting all meridians at the same angle—are represented as straight lines inclined at the same angle to the meridians Gauss Conformal Projection (Transverse Mercator) Krüger's Formulas Symbols and Definitions a semi-major axis of the ellipsoid f flattening of the ellipsoid e2 first eccentricity squared ϕ geodetic latitude, positive north λ geodetic longitude, positive east x grid coordinate, positive north y grid coordinate, positive eas Abstract. Read online. The late Professor Emeritus Waldo Tobler recently published a short paper, A Companion for Mercator (TOBLER, 2017). He was inspired by the often inappropriate use of the Mercator projection and suggested an alternative equal-area projection
This term is used to refer to the fact that these providers use a Mercator projection which treats the earth as a sphere, rather than a projection which treats the earth as an ellipsoid. This affects calculations done based on treating the map as a flat plane, and is therefore important to be aware of when working with these map providers Mercator-projektionen är en vinkelkorrekt projektion som uppfanns av Mercator. Projektionen bevarar riktningar korrekt. I projektionen - som växer mot polerna - är skeppets kurslinje, loxodromen , rätlinjig liksom meridianer och paralleller, vilka skär varandra vinkelrätt EPSG:3395 Projected coordinate system for World between 80°S and 84°N. Euro-centric view of world excluding polar areas. Very small scale mapping If the Web Mercator projection distorts the relative sizes of countries so dramatically, you know that it must also be distorting your analysis results. This map suggests that the areas that will experience the most extreme change in precipitation are a relatively small portion of the earth, just a narrow band along the equator
EPSG:3857 is a Spherical Mercator projection coordinate system popularized by web services such as Google and later OpenStreetMap In 1569 he created the first Mercator projection: a wall map of the world on 18 separate sheets entitled: New and more complete representation of the terrestrial globe properly adapted for its use in navigation. Its novel feature was that lines of longitude, latitude and rhomb lines all appeared as straight lines on the map That is due to the fact that Google uses the Mercator projection of the data. This projection preserves the angles around any point on the map, what is useful if you have a close look at some streets. The disadvantage of the Mercator projection is the inaccuracy of the sizes of the countries near to the poles If you have studied geography extensively, you might know this: Most [commerical] maps use Mercator projection which falsely depicts certain areas on the map larger or smaller than they actually are. The Mercator Projection widely used today was created in the16th-century by Gerardus Mercator, a Flemish cartographer The Mercator map projection is a special limiting case of the Lambert Conic Conformal map projection with the equator as the single standard parallel. All other parallels of latitude are straight lines and the meridians are also straight lines at right angles to the equator, equally spaced
Mercator projection - Wikiwand The Mercator projection is a cylindrical map projection presented by Flemish geographer and cartographer Gerardus Mercator in 1569. It became the standard map projection for navigation because it is unique in representing north as up and south as down everywhere while preserving local directions and shapes For almost 500 years, the Mercator projection has been one of the most popular maps of the world, common in atlases and pinned on peeling school walls. Gerardus Mercator, a renowned Flemish.. The Mercator just is a very unnatural projection. Here is a brief overview of Napier's method: He compared a particle travelling along an infinite line with another particle travelling along a finite line of length $R$
The Mercator projection is similar to this, so it is called a cylindrical projection. There are also conic and plane projections. In the diagram at the right, the circle is the meridian containing point P, with latitude φ. The line at the right represents a generator of the cylinder surrounding the sphere The Pseudo-Mercator Projection is a modification of the Mercator Projection and is used by huge web servers like Bing and Google. Maps that use the Mercator projection preserve its respective angles, also called a conformal map. A constant bearing is any straight line on a Mercator map
However, the projection devised by Gerardus Mercator in 1569 continues to be used since, in order to represent cities or regions, it is very adequate, the calculations necessary to manage it are relatively simple and it is proportional, that is, it distorts the space in both the north-south and east-west axes in order to maintain the forms MERCATOR PROJECTION: GNOMONIC PROJECTION: On a mercator projection chart, lines of latitude are parallel as are lines of longitude. On gnomonic projection charts, meridians converge and lines of latitude are curved. A rhumb line course of 040° crosses each meridian (lines of longitude) at the same angle CNN Election History presents historical election results on maps that represent the 48 contiguous states, Alaska, and Hawaii File:Mercator Projection.svg. From Wikimedia Commons, the free media repository. Jump to navigation Jump to search. File. File history. File usage on Commons. Size of this PNG preview of this SVG file: 800 × 591 pixels. Other resolutions: 320 × 237 pixels | 640 × 473 pixels | 1,024 × 757 pixels | 1,280 × 946 pixels | 1,652 × 1,221 pixels Check out our mercator projection selection for the very best in unique or custom, handmade pieces from our monogram & name necklaces shops
The equations of the Tobler Mercator map projection maintain the Mercator projection ranges between the parallels, with adjusted forms of the meridians. All territories, though drastically deformed by shape, cover their exact surface areas. Inspired by Tobler's approach, this paper proposes an alternative equidistant projection The Mercator projection is a map projection introduced by the Flemish cartographer Gerardus Mercator in 1569. A map projection converts latitude and longitude coordinates on the Earth to a point on a flat surface. In other words, it translates a point on the surface of the earth to a point on a flat map Mercator's 1569 world map used his new cylindrical conformal projection, meaning it's rectangular in shape and preserves angles across the map. That results in you being able to plot straight lines on the map and use them to give a bearing
The Gall-Peters projection is a rectangular map projection that maps all areas such that they have the correct sizes relative to each other. Like any equal-area projection, it achieves this goal by distorting most shapes.The projection is a particular example of the cylindrical equal-area projection with latitudes 45° north and south as the regions on the map that have no distortion Mercator projection, you are doing it wrong. One of the best alternatives to the Mercator projection was presented in 1974 at a conference in Germany by Dr. Arno Peters, who claimed he invented it.
A Mercator projection. Kwargs: central_longitude - the central longitude. Defaults to 0. min_latitude - the maximum southerly extent of the projection. Defaults to -80 degrees. max_latitude - the maximum northerly extent of the projection. Defaults to 84 degrees. globe - A cartopy.crs.Globe Mercator definition is - of, relating to, or drawn on the Mercator projection. Time Traveler for Mercator. The first known use of Mercator was in 1784. See more words from the same yea Mercator maps often appear in businesses, in libraries and in classrooms where geography is taught. This popularity is surprising, given the fact that the Mercator projection was first constructed in 1569, primarily for use by navigators. The Mercator projection's undeniable value to navigators stems from the fact that a straight line drawn by the traveler will have a constant compass bearing The Mercator projection was presented by the Flemish cartographer Gerardus Mercator in 1569. The projection conserves angles with the meridians. This means that if a navigational path is defined as a constant bearing measured relative to north, the path will be represented as a straight line across the map Explanation . The Mercator projection is a map projection (a way to present the spherical Earth surface into a flat 2-D map) presented by Flemish cartographer Gerardus Mercator in 1569. It was the standard map projection for some time, because it does preserve all angles in their true shape (i.e. it is a conformal map projection).This means that if you measure an angle on the map you get the.