what is the goode homolosine projection used for

Normally it is presented with multiple interruptions. They each define a different version of the Earths geometry, and thats all well say about that here (its easy to get into a rabbit hole with datums/geographic reference systems, so well avoid that). Goode homolosine is an equal-area (equivalent) projection. the same. It is a combination of Mollweide (or homolographic) and sinusoidal projections, hence the name homolosine. There is no distortion along the central meridians and the equator. For an ellipsoid, the semimajor axis is used for the radius. The homolosine evolved from Goodes 1916 experiments in interrupting the Mollweide projection.[1]. The PROJ string is rather simple: +proj=igh +lat_0=0 +lon_0=0 +datum=WGS84 +units=m +no_defs The IOGP (. 2023 QNA Experts - All Rights Reserved The equal-area property and some other distortion properties are not maintained when an ellipsoid is used. Goode homolosine is an equal-area (equivalent) projection. Flattened Orange (e.g. Goode's homolosine projection is a combination of the Mollweide and sinusoidal projections. See Projection Units for more information. The author assortedly removed ocean segments to focus on land masses. The Goode homolosine projection (or interrupted Goode's homolosine projection) is a pseudo- cylindrical, equal-area, composite map projection used for world maps. Radius of the sphere, given in meters. Up to latitudes 404411.8N/S, the map is projected according to the sinusoidal projections transformation. It is available in ArcGIS Pro 1.0 and later and in ArcGIS Desktop 9.2 and later. Two Thousand Years Those spherical coordinates I mention above are referencing a location on a sphere (or, in the case of Earth, an elipse), and as such they have to be in reference to some definition of that sphere. Despite the slight improvement in shapes, the curved latitude lines make the map harder to construct and use. The sinusoidal projection is used between those two latitude values for the equatorial part of the world. Because the Mollweide is sometimes called the "homolographic projection" (meaning, equal-area map), Goode fused the two names "homolographic" and "sinusoidal" (from the sinusoidal projection) to create the name "homolosine". Distortion. This page is not available in other languages. AuthaGraph AuthaGraph. The scale is correct along the 4044 north and south parallels and constant along any given parallel. 2 Massachusetts Ave., N.E. The Mercator map of the world has been the most popular during the last few centuries because correct angles and shapes are preserved throughout the map. The scale along all parallels in the sinusoidal part, between 40xb044'12" north and south, and along the central meridians of the projection is accurate. I have since tried to re-project different data to the Goode Homolosine projection, but the workaround solution does not work for . Goode homolosine is an equal-area (equivalent) projection. The graticule is symmetric across the equator and the central meridian. The following pages on the English Wikipedia use this file (pages on other projects are not listed): (2,058 900 pixels, file size: 519 KB, MIME type: Commons is a freely licensed media file repository. If you think this file should be featured on Wikimedia Commons as well, feel free to nominate it. The complete graticule is not symmetric English: The world on Goode's homolosine projection. The traverse aspect of an elliptical projection puts the pole in the center of the map instead of the equator. This has made using specific projections quite simple, as one can refer to them by their EPSG code. Your email address will not be published. Advantages: It was made famous when the National Geographic Society adopted it as their reference map of the world from 1922 until 1988. a two-cm square anywhere on our paper map has the same surface area on the globe), or perhaps preserving the real shapes of landmasses is important. Scale is true along every latitude between 4044' N and S and along the central meridian within the same latitude range. In the uninterrupted form, bulging meridians produce considerable shape distortion toward the edge of the projection. If the file has been modified from its original state, some details may not fully reflect the modified file. Click on a date/time to view the file as it appeared at that time. 2). Example: +lon_0=1.570796r. Date 15 August 2011 Source Own work Author Strebe Licensing[edit] Goode homolosine projection SW.jpg. The Goode homolosine projection is appropriate for small-scale mapping requiring accurate areas although its uninterrupted use is not advisable. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Image created with the Geocart map projection software. This grafting results in a kink in the meridians along the parallel of the graft. 140 in the southern hemisphere. Both projections are equal area and pseudocylindrical. Shapes, directions, angles, and distances are generally distorted. The Goode homolosine projection is often used to represent the entire globe (Figure 2.3. Required fields are marked *. It was developed by J. Paul Goode in 1923 as a merging of the Mollweide (or Homolographic) and Sinusoidal Projections, thus giving rise to the name Homolosine. It projects the entire Earth into a circle, though the polar regions are subject to extreme distortion. To The Goode homolosine projection is often used to represent the entire globe (Figure \(\PageIndex{2}\)). Developed in 1923 by J. Paul Goode (1862-1932) of the University of Chicago as a merging of the Mollweide (or Homolographic) with the sinusoidal at the parallels of identical scale, latitudes 4044N and S.; hence, the name Homolosine. Graticule Central Meridian: Straight line 0.44 as long as the Equator. Imagery is a derivative of NASA's Blue Marble summer month composite with oceans lightened to enhance legibility and contrast. Its equal-area property makes it useful for presenting spatial distribution of phenomena. All parameters are optional for the Goode Homolosine projection. Option, used to specify the interruption forms regardless of Central Meridian parameter value, with values as follows. Goode homolosine projection synonyms, Goode homolosine projection pronunciation, Goode homolosine projection translation, English dictionary definition of Goode homolosine projection. Goode homolosine is an equal-area (equivalent) projection. The United States Geological Survey (USGS) Center for Earth Resources Observation and Science (EROS) center provides data in Goode's homolosine projection. The sinusoidal projection is used between those two latitude values for the equatorial part of the world. The other meridians are concave toward the central meridian and equally spaced sinusoidal curves between 4044'12'' north and south, and arcs of an ellipse from the 4044'12'' parallel to the nearest pole. Central Meridian, which does not alter the interruption longitudes as specified by the Option parameter. Goode homolosine is a pseudocylindric projection. Homolosine projection with GeoTools. The van der Grinten projection is a compromise map projection that is neither equal-area nor conformal. How do map projections work? The Interrupted Goode Homolosine projection is an interrupted, pseudocylindrical, equal-area, composite map projection designed to present the entire world on the same map. What are the advantages and disadvantages of Goode homolosine projection? The Homolosine projection a new device for portraying the Earth's surface entire. Files are available under licenses specified on their description page. Goode offered variations of the interruption scheme for emphasizing the worlds land and the worlds oceans. When 'thingamajig' and 'thingamabob' just won't do, A simple way to keep them apart. Goode Homolosine parameters are as follows: Snyder, J. P. (1993). The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. This projection is fully supported by both PROJ and GDAL. I shifted this using the header file of the original .bil file. Washington, DC 20002. Each of these projections has been assigned a code by the European Petroleum Survey Group (EPSG), which has established itself as a projection authority. The Goode homolosine projection (or interrupted Goode homolosine projection) is a pseudocylindrical, equal-area, composite map projection used for world maps. For instance, the following little programme: Goode's Interrupted Homolosine projection provides a vast improvement in shapes while maintaining equal area. 2023. In fact, AuthaGraph World Map is so proportionally perfect, it magically folds it into a three-dimensional globe. Cookie policy. Original file (2,058 900 pixels, file size: 519 KB, MIME type: image/jpeg). The Hammer-Aitoff projection is another attempt to improve shapes on an equal-area projection. The sinusoidal projection is used between those two latitude values for the equatorial part of the world. Its straight, parallel meridians allow angle measurement with a protractor. Cal Coop Ocean Fish Invest Lines/Stations, Interrupted Goode Homolosine (Oceanic View), Gauss-Schreiber Transverse Mercator (aka Gauss-Laborde Reunion), Computation of coordinate operations between two CRS. sine projection hmlsn- : an equal-area interrupted map projection that combines the sinusoidal projection for latitudes up to 40 with the homolographic for areas poleward of these latitudes Word History Etymology homolo graphic + sine Love words? See more. NOTE: Only a spherical form of this projection is used. The equator and central meridian are projected as straight lines and the central meridian is 0.44 times the length of the projected equator. This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. Revision 0908dd5c. There is no distortion along the central meridians and the equator. Its equal-area property makes it useful for presenting spatial distribution of phenomena. First create a file called gl-goodes-deciduous.vrt that looks like this: However, when I try to create a CoordinateReferenceSystem object with this projection, GeoTools complains it has no transformation. Press. An advantage of this projection is that it does not exaggerate distance and area as much as the Mercator projection. Other meridians are equally spaced sinusoidal curves between latitudes 4044' N and S. The poles are represented by points. Other entrances have variable hours. What does the Goodes projection distort? Goode homolosine is an equal-area pseudocylindrical projection for world maps. Shapes, directions, angles, and distances are generally distorted. If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it. Flattening the Earth. You can explore projections and find your neighborhoods favorite at http://epsg.io. The "GoodeHomolosine" Projection has the following Parameters: Longitude of the Center of the Projection. The projections equal-area property follows from the fact that its source projections are themselves both equal-area. I am developing a MapServer map file for a map created with Goode's Homolosine projection. The Goode homolosine projection was introduced by J. Paul Goode in 1923. (2,058 900 pixels, file size: 519 KB, MIME type: it as one of the finest images on the English Wikipedia, adding significantly to its accompanying article. How Does The Muscular System Affect Other Body Systems. 3. Accessed 28 Jun. Annals of the Association of American Geographers. The default convention is to interpret this value as decimal degrees. Other Meridians: Equally spaced sinusoidal curves between the 4044'11.8'' parallels and elliptical arcs elsewhere, all concave toward the central meridian. All structured data from the file namespace is available under the. How Were Presidents Theodore And Franklin Roosevelt Relate? Vector and raster data in the Interrupted Goode Homolosine . The Mollweide projection is used for north of 40 44' and south of -40 44', approximately. What does it mean when the map projection distorts the earth? The sinusoidal projection is used between those two latitude values for the equatorial part of the world. Goode homolosine is a pseudocylindric projection. Goodes Interrupted Homolosine projection provides a vast improvement in shapes while maintaining equal area. Normally it is presented with multiple interruptions. Mollweide is an equal-area (equivalent) projection. This remedies the pointed result of the Sinusoidal at the poles and spreads the extreme latitudes, giving better shape there. The projection trades accuracy of angle and shape for accuracy of proportions in area, and as such is used where that property is needed, such as maps depicting global distributions. I, the copyright holder of this work, hereby publish it under the following license: Goode homolosine projection with Tissot's indicatrix.svg, (SVG file, nominally 3,600 1,568 pixels, file size: 2.52 MB), https://creativecommons.org/licenses/by-sa/4.0, Creative Commons Attribution-Share Alike 4.0, Attribution-Share Alike 4.0 International, https://commons.wikimedia.org/wiki/user:Kurubu, Creative Commons Attribution-ShareAlike 4.0 International, https://commons.wikimedia.org/w/index.php?title=File:Goode_homolosine_projection_with_Tissot%27s_indicatrix.svg&oldid=685852535, Creative Commons Attribution-ShareAlike License. Specified in [square brackets]: Actual size of the projection (minus the black or white background). This projection presents the global land masses with minimal interruption and minimal overall shape distortion. Shapes, directions, angles, and distances are generally distorted. [2] Common in the 1960s, the Goode homolosine projection is often called an "orange-peel map" because of its resemblance to the flattened rind of a hand-peeled orange. -100 and 30 in the northern hemisphere and -160, -60, 20, and It was developed by J. Paul Goode in 1923 as a merging of the Mollweide (or Homolographic) and Sinusoidal Projections, thus giving rise to the name . Size of this preview: 1,024 448 pixels. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. Click on a date/time to view the file as it appeared at that time. If used in conjunction with The geographical imagination in America, 18801950, Table of examples and properties of all common projections, Non-interrupted Goode Homolosine example (PDF). For example, it may be constant along any given parallel. The Mollweide is another example of an elliptical map. From Wikipedia, the free encyclopedia. Start your free trial today and get unlimited access to America's largest dictionary, with: Homolosine projection. Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/homolosine%20projection. The poles are presented with two, three, or four points, depending on As I am working on a continental scale (South America) I need to reproject to WGS84. J.P.. 1925. This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. Each of the six central meridians is a straight line 0.22 as long as the Equator, but not crossing the Equator. AuthaGraph To save this word, you'll need to log in. Washington, DC: United States Government Printing Office. The Earth is round (ok, ellipsoidal), paper and computer screens are flat. The Mollweide projection is used for north of 40 44' and south of -40 44', approximately. For an ellipsoid, the semimajor axis is used for the radius. Each of these projections has been assigned a code by the European Petroleum Survey Group (EPSG), which has established itself as a projection authority. True distances on the earth from pole to pole (180 degrees) and along the equator (360 degrees) yield a 1:2 ratio that can be proportional to an ellipse with the same 1:2 ratio. Shapes, directions, angles, and : 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. Actual Type: Pseudocylindric. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the Merriam-Webster Unabridged Dictionary. It is frequently used to map a complete hemisphere. The semi-major axis of the ellipsoid (sphere) is used for forward and inverse projection from grid to geodetic coordinates within the system wherein this projection is incorporated. I, the copyright holder of this work, hereby publish it under the following license: Add a one-line explanation of what this file represents. Graticule Central Meridian: Straight line 0.44 as long as the Equator. Goode. The Mollweide projection is used north and south of the 4044'12'' parallels. Copyright 1983-2023. Its equal-area property makes it useful for presenting spatial distribution of phenomena. Goode homolosine is an equal-area pseudocylindrical projection for world maps. However, shapes still stretch severely at the perimeter. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. The projection shows discontinuity in the graticule where both projections join. It is in the Interrupted Goode Homolosine projection. 15. By curving the latitude lines, meridians are crossed at angles closer to a right angle (as would be the case on earth). How Do You Choose The Best Candidate For A Job? Other Meridians: Equally spaced sinusoidal curves between the 4044'11.8'' parallels and elliptical arcs elsewhere, all concave toward the central meridian. When marked with [], sizes with and without background are approx. land-oriented version, the straight meridians are The parallels are straight lines, equally spaced between 4044'12" north and south. In the next episode in this tutorial well use cartopy to help turn a standard Python plotting tool into a powerful, projection-aware mapping utility. Your email address will not be published. If used in conjunction with +ellps, +R takes precedence. coordinate-system. specify radians instead, follow the value with the "r" character. Error message | View complete answer on https://geo.libretexts.org What is the problem with the Goode homolosine projection? The Goode homolosine projection (or interrupted Goode homolosine projection) is a pseudocylindrical, equal-area, composite map projection used for world maps. It is most commonly used in interrupted form. Two Thousand Years Homolosine projection definition, an equal-area projection of the world, distorting ocean areas in order to minimize the distortion of the continents. That cartogram is just a patch of several segments obtained from the Homolosine projection. This page was last edited on 30 August 2022, at 17:41. Its equal-area property makes it useful for presenting spatial distribution of phenomena. A conformal map distorts areamost features are depicted too large or too small. An interesting choice, the reader looses the notion of the dimension of the oceans, but keeps well informed of the shapes and areas of land masses and countries. The Mollweide projection is used north and south of the 4044'12'' parallels. You can explore projections and find your neighborhoods favorite at http://epsg.io, which is also the database cartopy uses to lookup projections by their EPSG codes. I would like to use Goode's Homolosine projection with GeoTools. An Album of Map AuthaGraph. Whenever interruption is used on any map, nearby points can become split apart and the relationship between them lost. For the If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Both projections are equal area and pseudocylindrical. Normally it is presented with multiple interruptions. By using interruption, selected parts of the map like land formations can be kept centered, further diminishing distortion. The Goode homolosine projection (or interrupted Goode homolosine projection) is a pseudocylindrical, equal-area, composite map projection used for world maps. It uses material from the Wikipedia article "Goode homolosine projection". What is wrong with the Mollweide projection? The scale along all parallels in the sinusoidal part, between 4044'12'' north and south, and along the central meridians of the projection is accurate. But there are significant disadvantages too; obviously there is the problem of the oceans (and Greenland) being split apart . A map that preserves shape is conformal. meridian 0.22 times as long as projected equator. (Most of the time.). The Mollweide projection compresses the extreme latitudes vertically and stretches them horizontally. This means that when we attempt to flatten our round planet to the two-dimensional plane of websites and journal articles, we make certain assumptions based on the intent we've set for our map.

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