new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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D3 · all subjects

d3-geo/cylindrical

6 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

d3-geo cylindrical projections

Cylindrical projections available: d3.geoEquirectangular, d3.geoMercator, d3.geoTransverseMercator, d3.geoEqualEarth, d3.geoNaturalEarth1.

geoEquirectangular projection

geoEquirectangular() returns the equirectangular projection, also known as plate carrée projection. It projects the sphere onto a cylinder and unrolls it onto the plane.

geoTransverseMercator projection

geoTransverseMercator() returns the transverse spherical Mercator projection. It defines a default clipExtent such that the world is projected to a square, clipped to approximately ±85° latitude.

geoEqualEarth projection

geoEqualEarth() returns the Equal Earth projection, which is an equal-area projection designed by Bojan Šavrič et al. in 2018.

geoNaturalEarth1 projection

geoNaturalEarth1() returns the Natural Earth projection, a pseudocylindrical projection designed by Tom Patterson. It is neither conformal nor equal-area, but is visually appealing for small-scale maps of the whole world.

Cylindrical projections definition

Cylindrical projections project the sphere onto a containing cylinder, and then unroll the cylinder onto the plane. Pseudocylindrical projections are a generalization of cylindrical projections.

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