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| Original file line number | Diff line number | Diff line change |
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| using DSP, Compat, Compat.Test | ||
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| @testset "Unwrap 1D" begin | ||
| @test unwrap([0.1, 0.2, 0.3, 0.4]) ≈ [0.1, 0.2, 0.3, 0.4] | ||
| @test unwrap([0.1, 0.2 + 2pi, 0.3, 0.4]) ≈ [0.1, 0.2, 0.3, 0.4] | ||
| @test unwrap([0.1, 0.2 - 2pi, 0.3, 0.4]) ≈ [0.1, 0.2, 0.3, 0.4] | ||
| @test unwrap([0.1, 0.2 - 2pi, 0.3 - 2pi, 0.4]) ≈ [0.1, 0.2, 0.3, 0.4] | ||
| @test unwrap([0.1 + 2pi, 0.2, 0.3, 0.4]) ≈ [0.1 + 2pi, 0.2 + 2pi, 0.3 + 2pi, 0.4 + 2pi] | ||
| @test unwrap([0.1, 0.2 + 6pi, 0.3, 0.4]) ≈ [0.1, 0.2, 0.3, 0.4] | ||
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| test_v = [0.1, 0.2, 0.3 + 2pi, 0.4] | ||
| res_v = unwrap(test_v) | ||
| @test test_v ≈ [0.1, 0.2, 0.3 + 2pi, 0.4] | ||
| res_v .= 0 | ||
| unwrap!(res_v, test_v) | ||
| @test res_v ≈ [0.1, 0.2, 0.3, 0.4] | ||
| @test test_v ≈ [0.1, 0.2, 0.3 + 2pi, 0.4] | ||
| unwrap!(test_v) | ||
| @test test_v ≈ [0.1, 0.2, 0.3, 0.4] | ||
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| # test unwrapping within multi-dimensional array | ||
| wrapped = [0.1, 0.2 + 2pi, 0.3, 0.4] | ||
| unwrapped = [0.1, 0.2, 0.3, 0.4] | ||
| wrapped = hcat(wrapped, wrapped) | ||
| unwrapped = hcat(unwrapped, unwrapped) | ||
| @test unwrap(wrapped, dims=2) ≈ wrapped | ||
| @test unwrap(wrapped, dims=1) ≈ unwrapped | ||
| @test unwrap!(copy(wrapped), dims=2) ≈ wrapped | ||
| @test unwrap!(copy(wrapped), dims=1) ≈ unwrapped | ||
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| # this should eventually default to the multi-dimensional case | ||
| @test_throws ArgumentError unwrap!(similar(wrapped), wrapped) | ||
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| # test unwrapping with other ranges | ||
| unwrapped = [1.0:100;] | ||
| wrapped = Float64[i % 10 for i in unwrapped] | ||
| @test unwrap(wrapped, range=10) ≈ unwrapped | ||
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| # test generically typed unwrapping | ||
| types = (Float32, Float64, BigFloat) | ||
| for T in types | ||
| srand(1234) | ||
| A_unwrapped = collect(Compat.range(0, stop=4convert(T, π), length=10)) | ||
| A_wrapped = A_unwrapped .% (2convert(T, π)) | ||
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| @test unwrap(A_wrapped) ≈ A_unwrapped | ||
| unwrap!(A_wrapped) | ||
| @test A_wrapped ≈ A_unwrapped | ||
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| A_unwrapped_range = collect(Compat.range(0, stop=4, length=10)) | ||
| test_range = convert(T, 2) | ||
| A_wrapped_range = A_unwrapped_range .% test_range | ||
| @test unwrap(A_wrapped_range; range=test_range) ≈ A_unwrapped_range | ||
| end | ||
| end | ||
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| # tests for multi-dimensional unwrapping | ||
| @testset "Unwrap 2D" begin | ||
| types = (Float32, Float64, BigFloat) | ||
| for T in types | ||
| srand(1234) | ||
| v_unwrapped = collect(Compat.range(0, stop=4convert(T, π), length=7)) | ||
| A_unwrapped = v_unwrapped .+ v_unwrapped' | ||
| A_wrapped = A_unwrapped .% (2convert(T, π)) | ||
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| test_unwrapped = unwrap(A_wrapped, dims=1:2) | ||
| d = first(A_unwrapped) - first(test_unwrapped) | ||
| @test (test_unwrapped .+ d) ≈ A_unwrapped | ||
| unwrap!(A_wrapped, dims=1:2) | ||
| d = first(A_unwrapped) - first(A_wrapped) | ||
| @test (A_wrapped .+ d) ≈ A_unwrapped | ||
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| v_unwrapped_range = collect(Compat.range(0, stop=4, length=7)) | ||
| A_unwrapped_range = v_unwrapped_range .+ v_unwrapped_range' | ||
| test_range = convert(T, 2) | ||
| A_wrapped_range = A_unwrapped_range .% test_range | ||
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| test_unwrapped_range = unwrap(A_wrapped_range, dims=1:2; range=test_range) | ||
| d = first(A_unwrapped_range) - first(test_unwrapped_range) | ||
| @test (test_unwrapped_range .+ d) ≈ A_unwrapped_range | ||
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| # Test circular_dims | ||
| # after unwrapping, pixels at borders should be equal to corresponding pixels | ||
| # on other side | ||
| circular_dims = (true, true) | ||
| wa_vec = Compat.range(0, stop=4convert(T, π), length=10) | ||
| wa_uw = wa_vec .+ zeros(10)' | ||
| # make periodic | ||
| wa_uw[end, :] = wa_uw[1, :] | ||
| wa_w = wa_uw .% (2π) | ||
| wa_test = unwrap(wa_w, dims=1:2, circular_dims=circular_dims, rng=MersenneTwister(0)) | ||
| # with wrap-around, the borders should be equal, but for this problem the | ||
| # image may not be recovered exactly | ||
| @test wa_test[:, 1] ≈ wa_test[:, end] | ||
| @test wa_test[end, :] ≈ wa_test[1, :] | ||
| # In this case, calling unwrap w/o circular_dims does not recover the borders | ||
| wa_test_nowa = unwrap(wa_w, dims=1:2) | ||
| @test !(wa_test_nowa[end, :] ≈ wa_test_nowa[1, :]) | ||
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| end | ||
| end | ||
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| @testset "Unwrap 3D" begin | ||
| types = (Float32, Float64, BigFloat) | ||
| f(x, y, z) = 0.1x^2 - 2y + 2z | ||
| f_wraparound2(x, y, z) = 5*sin(x) + 2*cos(y) + z | ||
| f_wraparound3(x, y, z) = 5*sin(x) + 2*cos(y) - 4*cos(z) | ||
| for T in types | ||
| grid = Compat.range(zero(T), stop=2convert(T, π), length=11) | ||
| f_uw = f.(grid, grid', reshape(grid, 1, 1, :)) | ||
| f_wr = f_uw .% (2convert(T, π)) | ||
| uw_test = unwrap(f_wr, dims=1:3) | ||
| offset = first(f_uw) - first(uw_test) | ||
| @test (uw_test.+offset) ≈ f_uw rtol=eps(T) #oop, nowrap | ||
| # test in-place version | ||
| unwrap!(f_wr, dims=1:3) | ||
| offset = first(f_uw) - first(f_wr) | ||
| @test (f_wr.+offset) ≈ f_uw rtol=eps(T) #ip, nowrap | ||
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| f_uw = f_wraparound2.(grid, grid', reshape(grid, 1, 1, :)) | ||
| f_wr = f_uw .% (2convert(T, π)) | ||
| uw_test = unwrap(f_wr, dims=1:3) | ||
| offset = first(f_uw) - first(uw_test) | ||
| @test (uw_test.+offset) ≈ f_uw #oop, 2wrap | ||
| # test in-place version | ||
| unwrap!(f_wr, dims=1:3, circular_dims=(true, true, false)) | ||
| offset = first(f_uw) - first(f_wr) | ||
| @test (f_wr.+offset) ≈ f_uw #ip, 2wrap | ||
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| f_uw = f_wraparound3.(grid, grid', reshape(grid, 1, 1, :)) | ||
| f_wr = f_uw .% (2convert(T, π)) | ||
| uw_test = unwrap(f_wr, dims=1:3, circular_dims=(true, true, true)) | ||
| offset = first(f_uw) - first(uw_test) | ||
| @test (uw_test.+offset) ≈ f_uw #oop, 3wrap | ||
| # test in-place version | ||
| unwrap!(f_wr, dims=1:3, circular_dims=(true, true, true)) | ||
| offset = first(f_uw) - first(f_wr) | ||
| @test (f_wr.+offset) ≈ f_uw #oop, 3wrap | ||
| end | ||
| end |
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