m_map中的不同投影m_proj

Miller Cylindrical投影并非等面积或保形,但适用于展示世界地图,其特性类似于Mercator投影。
常用的平面图有两种:
1.Equidistant Cylindrical
      This projection is neither equal-area nor conformal. It consists of equally spaced latitude and longitude lines, and is very often used for quick plotting of data. It is included here simply so that such maps can take advantage of the grid generation routines. Also known as the Plate Carree. Properties are the same as for the Mercator, above.
m_map中的不同投影m_proj
2.
  • Miller Cylindrical
  • This projection is neither equal-area nor conformal, but "looks nice" for world maps. Properties are the same as for the Mercator, above.
  • m_map中的不同投影m_proj

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