The mollweide projection
WebApr 16, 2013 · The purpose of the script is to do a contour plot of some data in a Mollweide projection with pylab. There is a strange behaviour of contourf. Here is the code. import numpy as np import pylab as plt ra = np.linspace(-np.pi, np.pi, 40) dec= np.linspace(-np.pi/2, np.pi/2, 20) X,Y = np.meshgrid(ra,dec) Z = np.sin(X) * np.cos(X) * np.sin(Y) * np ... WebIt is the geometry that results from projecting a circle of infinitesimal radius from a curved geometric model, such as a globe, onto a map. Tissot proved that the resulting diagram is an ellipse whose axes indicate the two principal directions along which scale is maximal and minimal at that point on the map.
The mollweide projection
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WebMar 23, 2024 · The Mollweide projection is a pseudocylindrical equal-area projection that balances area and shape distortion, making it suitable for world maps that require a reasonable compromise between these properties. The Mollweide Projection is frequently used for thematic maps, such as those illustrating global temperature patterns or … WebFeb 21, 2024 · At some stage the data is converted to the Mollweide projection using the command: constellation_lines_sf_trans<- st_transform (constellation_lines_sf_trans, crs = "+proj=moll") The resulting image, reproduced along the lines as described in …
WebThis projection was presented by Carl B. Mollweide in 1805. Its other names include the Homolographic, the Homalographic, the Babinet, and the Elliptical projections. It is … WebA family of map projections that includes as special cases Mollweide projection, Collignon projection, and the various cylindrical equal-area projections. 1932 Wagner VI: Pseudocylindrical ... Projection in which the compromise is no longer homogeneous but instead is modified for a larger deformation of the oceans, to achieve lesser deformation ...
WebThe Mollweide projection is an attempt to moderate the behavior of the equal-area sinusoidal projection. It was originally invented in 1805 by Karl Mollweide, but Jacques … Web麥卡托投影法（英語： Mercator projection ），又稱麦卡托投影法、正軸等角圓柱投影，是一種等角的圓柱形地圖投影法。. 本投影法得名於法蘭德斯(佛蘭德)出身的地理學家 傑拉杜斯·麥卡托，他於1569年發表長202公分、寬124公分以此方式繪製的世界地圖。 在以此投影法繪製的地圖上，將地球在平面展開 ...
The Mollweide projection is an equal-area, pseudocylindrical map projection generally used for maps of the world or celestial sphere. It is also known as the Babinet projection, homalographic projection, homolographic projection, and elliptical projection. The projection trades accuracy of angle and shape for … See more The Mollweide is a pseudocylindrical projection in which the equator is represented as a straight horizontal line perpendicular to a central meridian that is one-half the equator's length. The other parallels compress … See more The projection transforms from latitude and longitude to map coordinates x and y via the following equations: where θ is an … See more • List of map projections • Aitoff projection • Hammer projection See more • An interactive Java applet to study deformations (area, distance and angle) of the Mollweide Map Projection • Mollweide Projection at Mathworld See more
WebApr 3, 2024 · The sum of the percentages across the ecoregions equals the global total percentage of species threatened with extinction (11%). Note that intervals differ among classes for visualization purposes. The map is displayed based … georgia homes with a poolWebgoode homolosine projection. Publiziert am 2024-04-09 von. Although the linear scale is equal in all directions around any point, thus preserving the angles and the shapes of small objects, the Mercator projection distorts the size of objects as the latitude increases from the equator to the poles, where the scale becomes infinite. ... georgia homes with inlaw suitesWebMar 24, 2024 · The Mollweide projection is a map projection also called the elliptical projection or homolographic equal-area projection. The forward transformation is x = (2sqrt(2)(lambda-lambda_0)costheta)/pi (1) y = … georgia home theater jobsWebMar 24, 2011 · On this map with the Mollweide projection, all indicatrices are apparently equal in size because an equal area projection is used. For other map projections, such as … georgia homes with rv garagesWebA Mollweide projection. This projection is pseudocylindrical, and equal area. Parallels are unequally-spaced straight lines, while meridians are elliptical arcs up to semicircles on the edges. Poles are points. It is commonly used for world maps, or interrupted with several central meridians. christian louboutin marie antoinette shoesWebThe Mollweide projection was first created by Karl Mollweide in 1805 and then familiarized again by Jacques Babinet in 1857. This map was created as an improvement on the … georgia homes with basementsWebThe Hammer projectionis an equal-area map projectiondescribed by Ernst Hammerin 1892. Using the same 2:1 elliptical outer shape as the Mollweide projection, Hammer intended to reduce distortion in the regions of the outer meridians, where it is extreme in the Mollweide. Development[edit] georgia homes with pool