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Refactored reference tests
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‎spec/reference/barplot_spec.cr‎

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require "../support/reference_helpers"
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describe "Julia reference output compatibility - barplot" do
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describe "barplot" do
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it "matches barplot/default" do
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p = UnicodePlot.barplot(["bar", "foo"], [23.0, 37.0])
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test_ref("barplot/default.txt", p)
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end
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it "matches barplot/default2 (with barplot! appended)" do
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p = UnicodePlot.barplot(["bar", "foo"], [23.0, 37.0])
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UnicodePlot.barplot!(p, ["zoom"], [90.0])
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test_ref("barplot/default2.txt", p)
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end
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it "matches barplot/nocolor" do
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p = UnicodePlot.barplot(["bar", "foo"], [23.0, 37.0])
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test_ref("barplot/nocolor.txt", p)
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end
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it "matches barplot/ranges" do
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p = UnicodePlot.barplot(["2", "3", "4", "5", "6"], [11.0, 12.0, 13.0, 14.0, 15.0])
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test_ref("barplot/ranges.txt", p)
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end
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it "matches barplot/ranges2" do
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p = UnicodePlot.barplot(["2", "3", "4", "5", "6"], [11.0, 12.0, 13.0, 14.0, 15.0])
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UnicodePlot.barplot!(p, ["9", "10"], [20.0, 21.0])
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test_ref("barplot/ranges2.txt", p)
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end
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it "matches barplot/parameters1" do
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p = UnicodePlot.barplot(
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["Paris", "New York", "Moskau", "Madrid"],
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[2.244, 8.406, 11.92, 3.165],
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title: "Relative sizes of cities",
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xlabel: "population [in mil]",
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color: :blue,
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margin: 7,
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padding: 3,
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)
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test_ref("barplot/parameters1.txt", p)
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end
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it "matches barplot/parameters1_nolabels" do
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p = UnicodePlot.barplot(
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["Paris", "New York", "Moskau", "Madrid"],
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[2.244, 8.406, 11.92, 3.165],
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title: "Relative sizes of cities",
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xlabel: "population [in mil]",
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color: :blue,
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margin: 7,
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padding: 3,
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labels: false,
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)
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test_ref("barplot/parameters1_nolabels.txt", p)
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end
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it "matches barplot/parameters2" do
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p = UnicodePlot.barplot(
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["Paris", "New York", "Moskau", "Madrid"],
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[2.244, 8.406, 11.92, 3.165],
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title: "Relative sizes of cities",
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xlabel: "population [in mil]",
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color: :yellow,
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border: :solid,
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symbols: ['='],
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width: 60,
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)
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test_ref("barplot/parameters2.txt", p)
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end
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it "matches barplot/edgecase_zeros" do
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p = UnicodePlot.barplot(["5", "4", "3", "2", "1"], [0.0, 0.0, 0.0, 0.0, 0.0])
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test_ref("barplot/edgecase_zeros.txt", p)
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end
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it "matches barplot/edgecase_onelarge" do
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p = UnicodePlot.barplot(["a", "b", "c", "d"], [1.0, 1.0, 1.0, 1_000_000.0])
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test_ref("barplot/edgecase_onelarge.txt", p)
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end
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it "matches barplot/col1 (8-bit terminal color, ANSI stripped)" do
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p = UnicodePlot.barplot(["B", "A"], [2.0, 1.0], color: 9_i32)
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test_ref("barplot/col1.txt", p)
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end
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it "matches barplot/log10" do
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p = UnicodePlot.barplot(
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["a", "b", "c", "d", "e"],
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[0.0, 1.0, 10.0, 100.0, 1_000.0],
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title: "Logscale Plot",
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xscale: :log10,
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)
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test_ref("barplot/log10.txt", p)
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end
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it "matches barplot/log10_label" do
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p = UnicodePlot.barplot(
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["a", "b", "c", "d", "e"],
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[0.0, 1.0, 10.0, 100.0, 1_000.0],
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title: "Logscale Plot",
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xlabel: "custom label",
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xscale: :log10,
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)
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test_ref("barplot/log10_label.txt", p)
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end
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it "matches barplot/col2 (RGB tuple color)" do
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p = UnicodePlot.barplot(["B", "A"], [2.0, 1.0], color: {200, 50, 0})
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test_ref("barplot/col2.txt", p)
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end
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it "matches barplot/colors (per-bar color vector)" do
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p = UnicodePlot.barplot(
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["a", "b", "c", "d", "e"],
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[20.0, 30.0, 60.0, 50.0, 40.0],
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color: [:red, :green, :blue, :yellow, :normal],
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)
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test_ref("barplot/colors.txt", p)
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end
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it "matches barplot/maximum_series1" do
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p = UnicodePlot.barplot(
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["1", "2", "3"],
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[1.0, 2.0, 3.0],
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color: :blue,
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name: "1ˢᵗ series",
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maximum: 10.0,
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)
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test_ref("barplot/maximum_series1.txt", p)
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end
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it "matches barplot/maximum_series2" do
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p = UnicodePlot.barplot(
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["1", "2", "3"],
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[1.0, 2.0, 3.0],
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color: :blue,
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name: "1ˢᵗ series",
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maximum: 10.0,
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)
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UnicodePlot.barplot!(p, ["4", "5", "6"], [6.0, 1.0, 10.0], color: :red, name: "2ⁿᵈ series")
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test_ref("barplot/maximum_series2.txt", p)
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end
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end
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end

‎spec/reference/boxplot_spec.cr‎

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require "../support/reference_helpers"
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describe "Julia reference output compatibility - boxplot" do
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describe "boxplot" do
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it "matches boxplot/default" do
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p = UnicodePlot.boxplot([1.0, 2.0, 3.0, 4.0, 5.0])
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test_ref("boxplot/default.txt", p)
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end
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it "matches boxplot/default_name" do
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p = UnicodePlot.boxplot("series1", [1.0, 2.0, 3.0, 4.0, 5.0])
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test_ref("boxplot/default_name.txt", p)
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end
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it "matches boxplot/scale1 (xlim 0..5)" do
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p = UnicodePlot.boxplot([1.0, 2.0, 3.0, 4.0, 5.0], xlim: {0.0, 5.0})
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test_ref("boxplot/scale1.txt", p)
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end
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it "matches boxplot/scale2 (xlim 0..6)" do
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p = UnicodePlot.boxplot([1.0, 2.0, 3.0, 4.0, 5.0], xlim: {0.0, 6.0})
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test_ref("boxplot/scale2.txt", p)
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end
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it "matches boxplot/scale3 (xlim 0..10)" do
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p = UnicodePlot.boxplot([1.0, 2.0, 3.0, 4.0, 5.0], xlim: {0.0, 10.0})
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test_ref("boxplot/scale3.txt", p)
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end
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it "matches boxplot/scale4 (xlim 0..20)" do
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p = UnicodePlot.boxplot([1.0, 2.0, 3.0, 4.0, 5.0], xlim: {0.0, 20.0})
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test_ref("boxplot/scale4.txt", p)
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end
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it "matches boxplot/scale5 (xlim 0..40)" do
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p = UnicodePlot.boxplot([1.0, 2.0, 3.0, 4.0, 5.0], xlim: {0.0, 40.0})
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test_ref("boxplot/scale5.txt", p)
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end
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it "matches boxplot/multi1 (two named series)" do
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p = UnicodePlot.boxplot(
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["one", "two"],
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[[1.0, 2.0, 3.0, 4.0, 5.0], [2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]],
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title: "Multi-series", xlabel: "foo", color: :yellow
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)
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test_ref("boxplot/multi1.txt", p)
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end
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it "matches boxplot/multi2 (after boxplot! appends third series)" do
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p = UnicodePlot.boxplot(
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["one", "two"],
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[[1.0, 2.0, 3.0, 4.0, 5.0], [2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]],
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title: "Multi-series", xlabel: "foo", color: :yellow
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)
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UnicodePlot.boxplot!(p, "one more", [-1.0, 2.0, 3.0, 4.0, 11.0])
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test_ref("boxplot/multi2.txt", p)
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end
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it "matches boxplot/multi3 (after second boxplot! with name kwarg)" do
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p = UnicodePlot.boxplot(
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["one", "two"],
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[[1.0, 2.0, 3.0, 4.0, 5.0], [2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]],
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title: "Multi-series", xlabel: "foo", color: :yellow
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)
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UnicodePlot.boxplot!(p, "one more", [-1.0, 2.0, 3.0, 4.0, 11.0])
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UnicodePlot.boxplot!(p, [4.0, 2.0, 2.5, 4.0, 14.0], name: "last one")
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test_ref("boxplot/multi3.txt", p)
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end
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it "matches boxplot/multi4 (unnamed multi-series)" do
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p = UnicodePlot.boxplot([[1.0, 2.0, 3.0, 4.0, 5.0], [2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]])
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test_ref("boxplot/multi4.txt", p)
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end
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end
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end

‎spec/reference/contourplot_spec.cr‎

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require "../support/reference_helpers"
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describe "Julia reference output compatibility - contourplot" do
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describe "contourplot" do
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# NOTE: Contour parity work is intentionally paused for the failing reference cases below.
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#
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# Investigation summary (Crystal vs Julia):
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# - Failing snapshots are limited to: padding_0..3 and consistency.
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# - Extracted contour geometry is effectively equivalent:
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# - per-level vertex counts match,
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# - point sets match,
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# - undirected segment sets match.
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# - Despite that, rendered text differs reproducibly in these cases.
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# - This strongly suggests the remaining mismatch is in rasterization / line drawing
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# order sensitivity (Canvas/lines!), not in contour topology extraction itself.
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#
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# Experiments attempted (no resolution):
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# - changed contour cell traversal order,
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# - changed level comparison (> vs >=),
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# - normalized polyline segment direction at draw time,
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# - verified ambiguous marching-squares cases still pass contour unit specs.
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#
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# Keep these 5 specs pending until Canvas parity work is resumed.
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pending "matches contourplot/padding_0 (Known parity gap: contour geometry matches Julia, rendered raster output still differs)" do
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x = range_by_step(-1.0, 1.0, 0.1)
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y = x
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z = y.map { |yv| x.map { |xv| 1.0e4 * Math.sqrt(xv**2 + yv**2) } }
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p = UnicodePlot.contourplot(x, y, z, labels: false, margin: 0, padding: 0)
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test_ref("contourplot/padding_0.txt", p)
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end
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pending "matches contourplot/padding_1 (Known parity gap: contour geometry matches Julia, rendered raster output still differs)" do
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x = range_by_step(-1.0, 1.0, 0.1)
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y = x
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z = y.map { |yv| x.map { |xv| 1.0e4 * Math.sqrt(xv**2 + yv**2) } }
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p = UnicodePlot.contourplot(x, y, z, labels: false, margin: 0, padding: 1)
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test_ref("contourplot/padding_1.txt", p)
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end
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pending "matches contourplot/padding_2 (Known parity gap: contour geometry matches Julia, rendered raster output still differs)" do
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x = range_by_step(-1.0, 1.0, 0.1)
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y = x
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z = y.map { |yv| x.map { |xv| 1.0e4 * Math.sqrt(xv**2 + yv**2) } }
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p = UnicodePlot.contourplot(x, y, z, labels: false, margin: 0, padding: 2)
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test_ref("contourplot/padding_2.txt", p)
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end
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pending "matches contourplot/padding_3 (Known parity gap: contour geometry matches Julia, rendered raster output still differs)" do
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x = range_by_step(-1.0, 1.0, 0.1)
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y = x
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z = y.map { |yv| x.map { |xv| 1.0e4 * Math.sqrt(xv**2 + yv**2) } }
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p = UnicodePlot.contourplot(x, y, z, labels: false, margin: 0, padding: 3)
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test_ref("contourplot/padding_3.txt", p)
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end
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it "matches contourplot/gauss_cividis" do
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x, y, z = gaussian_2d
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p = UnicodePlot.contourplot(x, y, z, colormap: :cividis)
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test_ref("contourplot/gauss_cividis.txt", p)
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end
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it "matches contourplot/gauss_5levels" do
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x, y, z = gaussian_2d
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p = UnicodePlot.contourplot(x, y, z, levels: 5)
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test_ref("contourplot/gauss_5levels.txt", p)
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end
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it "matches contourplot/gauss_nested" do
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x1, y1, z1 = gaussian_2d
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p = UnicodePlot.contourplot(x1, y1, z1, levels: 2)
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x2, y2, z2 = gaussian_2d(sigma_x: 0.5, sigma_y: 0.25)
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UnicodePlot.contourplot!(p, x2, y2, z2, levels: 1, colormap: :magma)
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test_ref("contourplot/gauss_nested.txt", p)
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end
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it "matches contourplot/function_contour" do
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x = range_by_step(-3.0, 3.0, 0.01)
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y = range_by_step(-3.0, 4.0, 0.01)
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z = y.map do |yv|
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x.map do |xv|
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t1 = Math.exp(-(xv**2) - (yv**2))
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t2 = Math.exp(-((xv - 1.0)**2) - 2.0 * ((yv - 2.0)**2))
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(t1 + t2)**2
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end
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end
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p = UnicodePlot.contourplot(x, y, z)
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test_ref("contourplot/function_contour.txt", p)
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end
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pending "matches contourplot/consistency (Known parity gap: contour geometry matches Julia, rendered raster output still differs)" do
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x = range_by_step(-2.0, 2.0, 0.2)
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y = range_by_step(-3.0, 1.0, 0.2)
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z = y.map { |yv| x.map { |xv| 10.0 * xv * Math.exp(-(xv**2) - (yv**2)) } }
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p = UnicodePlot.contourplot(x, y, z, levels: 10)
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test_ref("contourplot/consistency.txt", p)
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end
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end
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end

‎spec/reference/densityplot_spec.cr‎

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require "../support/reference_helpers"
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describe "Julia reference output compatibility - densityplot" do
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describe "densityplot" do
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it "matches densityplot/densityplot" do
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x = DENSITYPLOT_X
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y = DENSITYPLOT_Y
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p = UnicodePlot.densityplot(x, y)
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UnicodePlot.densityplot!(p, x.map { |v| v + 2.0 }, y.map { |v| v + 2.0 })
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test_ref("densityplot/densityplot.txt", p)
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end
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it "matches densityplot/densityplot_parameters" do
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x = DENSITYPLOT_X
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y = DENSITYPLOT_Y
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p = UnicodePlot.densityplot(x, y, name: "foo", color: :red, title: "Title", xlabel: "x")
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UnicodePlot.densityplot!(p, x.map { |v| v + 2.0 }, y.map { |v| v + 2.0 }, name: "bar")
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test_ref("densityplot/densityplot_parameters.txt", p)
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end
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it "matches densityplot/densityplot_dscale_identity" do
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x = densityplot_fixture_xprime(DENSITYPLOT_X)
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p = UnicodePlot.densityplot(x, DENSITYPLOT_Y, dscale: :identity)
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test_ref("densityplot/densityplot_dscale_identity.txt", p)
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end
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it "matches densityplot/densityplot_dscale_sqrt" do
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x = densityplot_fixture_xprime(DENSITYPLOT_X)
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p = UnicodePlot.densityplot(x, DENSITYPLOT_Y, dscale: :sqrt)
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test_ref("densityplot/densityplot_dscale_sqrt.txt", p)
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end
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it "matches densityplot/densityplot_dscale_log" do
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x = densityplot_fixture_xprime(DENSITYPLOT_X)
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p = UnicodePlot.densityplot(x, DENSITYPLOT_Y, dscale: ->(v : Float64) { Math.log(1.0 + v) })
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test_ref("densityplot/densityplot_dscale_log.txt", p)
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end
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it "matches densityplot/densityplot_dscale_custom" do
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x = densityplot_fixture_xprime(DENSITYPLOT_X)
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p = UnicodePlot.densityplot(x, DENSITYPLOT_Y, dscale: ->(v : Float64) { v / (v + 1.0) })
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test_ref("densityplot/densityplot_dscale_custom.txt", p)
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end
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end
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end

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