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Versions: 31
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Stored size: 1.8 KB
Contents
require("../env");
require("../../d3");
require("../../d3.geo");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.geo.albers");
suite.addBatch({
"albers": {
topic: function() {
return d3.geo.albers();
},
"Arctic": function(albers) {
var coords = albers([0, 85]);
assert.inDelta(coords[0], 1031.393796, 1e-6);
assert.inDelta(coords[1], -714.160436, 1e-6);
var lonlat = albers.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
},
"Antarctic": function(albers) {
var coords = albers([0, -85]);
assert.inDelta(coords[0], 2753.458335, 1e-6);
assert.inDelta(coords[1], 317.371122, 1e-6);
var lonlat = albers.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], -85, 1e-6);
},
"Hawaii": function(albers) {
var coords = albers([-180, 0]);
assert.inDelta(coords[0], -984.779405, 1e-6);
assert.inDelta(coords[1], 209.571197, 1e-6);
var lonlat = albers.invert(coords);
assert.inDelta(lonlat[0], -180, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Phillipines": function(albers) {
var coords = albers([180, 0]);
assert.inDelta(coords[0], 894.435228, 1e-6);
assert.inDelta(coords[1], -2927.636630, 1e-6);
var lonlat = albers.invert(coords);
assert.inDelta(lonlat[0], 180, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Inversion works for non-zero translation": function() {
var albers = d3.geo.albers().translate([123, 99]).scale(100),
coords = albers([0, 85]),
lonlat = albers.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
}
}
});
suite.export(module);
Version data entries
31 entries across 31 versions & 2 rubygems