Sha256: 2800ded07a4d3535f727a5b977477d2259254bb045a82301d5789a8b61bbed60
Contents?: true
Size: 396 Bytes
Versions: 4
Compression:
Stored size: 396 Bytes
Contents
import "projection";
function collignon(λ, φ) {
var α = asqrt(1 - Math.sin(φ));
return [
(2 / sqrtπ) * λ * α,
sqrtπ * (1 - α)
];
}
collignon.invert = function(x, y) {
var λ = (λ = y / sqrtπ - 1) * λ;
return [
λ > 0 ? x * Math.sqrt(π / λ) / 2 : 0,
asin(1 - λ)
];
};
(d3.geo.collignon = function() { return projection(collignon); }).raw = collignon;
Version data entries
4 entries across 4 versions & 1 rubygems