What is the Pseudocylindrical projection?
Introduction. Pseudocylindrical projections for world maps are characterized by straight hori- zontal lines for parallels of latitude and (usually) equally-spaced curved meridians of longitude. They are therefore related to cylindrical projections in which meridians are straight instead of curved.
What is a pseudocylindrical?
Pseudocylindrical projections are like cylindrical projections in that their parallels are straight parallel lines. The difference is that the meridians are curved rather than straight. The projection outlines are usually ovals that have been either pinched together or flattened out at the poles.
What is the Pseudocylindrical projection used for?
Pseudocylindrical projections represent the central meridian as a straight line segment. Other meridians are longer than the central meridian and bow outward, away from the central meridian. Pseudocylindrical projections map parallels as straight lines.
What is a cylindrical map used for?
This projection has prominent use in panoramic photography, where it is usually called the “cylindrical projection”. It can present a full 360° panorama and preserves vertical lines. Unlike other cylindrical projections, it gives correct perspective for tall objects, an important trait for architectural scenes.
What are the three main types of map projections?
This group of map projections can be classified into three types: Gnomonic projection, Stereographic projection and Orthographic projection.
- Gnomonic projection. The Gnomonic projection has its origin of light at the center of the globe.
- Stereographic projection.
- Orthographic projection.
How do maps work?
Maps present information about the world in a simple, visual way. They teach about the world by showing sizes and shapes of countries, locations of features, and distances between places. Maps can show distributions of things over Earth, such as settlement patterns.
What does cylindrical look like?
A cylinder has two flat ends in the shape of circles. These two faces are connected by a curved face that looks like a tube. If you make a flat net for a cylinder, it looks like a rectangle with a circle attached at each end.
What is a cylindrical map?
cylindrical projection, in cartography, any of numerous map projections of the terrestrial sphere on the surface of a cylinder that is then unrolled as a plane. Originally, this and other map projections were achieved by a systematic method of drawing the Earth’s meridians and latitudes on the flat surface.