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Contents
describe "d3-array - histograms" do
it "d3.histogram" do
expect(D3.histogram).to be_a(D3::Histogram)
end
describe "histogram.thresholds" do
let(:data) { (1..10).to_a }
let(:h) { D3.histogram }
it "block" do
h.thresholds{|*args| D3.threshold_sturges(*args) }
expect(h.(data)).to eq([
[1],
[2,3],
[4,5],
[6,7],
[8,9,10]
])
end
it "symbol" do
h.thresholds(:scott)
expect(h.(data)).to eq([
[1,2,3,4],
[5,6,7,8,9,10],
])
end
it "number" do
h.thresholds(2)
expect(h.(data)).to eq([
[1, 2, 3, 4],
[5, 6, 7, 8, 9, 10]
])
end
end
it "histogram.call" do
h = D3.histogram
expect(h.([1,2,1,2,1,3])).to eq([
[1,1,1],
[],
[2,2],
[3],
])
end
it "d3.threshold_freedman_diaconis" do
data = (0..10).to_a
expect(D3.threshold_freedman_diaconis(data,0,10)).to eq(3)
end
it "d3.threshold_scott" do
data = (0..10).to_a
expect(D3.threshold_scott(data,0,10)).to eq(2)
end
it "d3.threshold_sturges" do
data = (0..10).to_a
expect(D3.threshold_sturges(data,0,10)).to eq(5)
end
end
Version data entries
8 entries across 8 versions & 2 rubygems