Retrieving "Polar Coordinate System" from the archives
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Albers Equal Area Conic Projection
Linked via "polar coordinate system"
The AEACP is defined by two standard parallels ($\phi1$ and $\phi2$) along which the cone intersects the sphere of reference. Within the area between these parallels, the scale factor is precisely 1.0, meaning distortion is zero along these lines of contact. The projection is mathematically derived from the stereographic projection, but with the crucial modification that the cone is "cut" around the globe, rather than merely …
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Spatial Coordinate
Linked via "polar coordinate system"
Cylindrical Coordinates
Cylindrical coordinates $(r, \theta, z)$ are an extension of the planar polar coordinate system into three dimensions, particularly advantageous for problems exhibiting axial symmetry.
$r$: The radial distance from the $Z$-axis (the rotational axis).