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JuliaApproximation

16 indexed repositories · View on GitHub

ApproxFun.jl
Julia package for function approximation

Julia · 559 stars
FastGaussQuadrature.jl
Julia package for Gaussian quadrature

Julia · 321 stars
FastTransforms.jl
:rocket: Julia package for orthogonal polynomial transforms :snowboarder:

Julia · 281 stars
DomainSets.jl
A Julia package for describing domains as continuous sets of elements

Julia · 79 stars
ClassicalOrthogonalPolynomials.jl
A Julia package for classical orthogonal polynomials and expansions

Julia · 51 stars
ContinuumArrays.jl
A package for representing quasi arrays with continuous indices

Julia · 31 stars
HarmonicOrthogonalPolynomials.jl
A Julia package for working with spherical harmonic expansions

Julia · 26 stars
MultivariateOrthogonalPolynomials.jl
Supports approximating functions and solving differential equations on various higher dimensional domains such as disks and triangles

Julia · 20 stars
GenericFFT.jl
A package for computing the FFT with arbitrary floating point numbers

Julia · 16 stars
ApproxFunBase.jl
Core functionality of ApproxFun

Julia · 13 stars
QuasiArrays.jl
A package for representing quasi-arrays

Julia · 11 stars
SemiclassicalOrthogonalPolynomials.jl
A Julia repository for semiclassical orthogonal polynomials

Julia · 8 stars
ApproxFunFourier.jl
Support for Fourier-based spaces in ApproxFun

Julia · 7 stars
SingularIntegrals.jl
A Julia package for computing singular integrals

Julia · 7 stars
ApproxFunOrthogonalPolynomials.jl
Support for orthogonal polynomial-based spaces in ApproxFun

Julia · 4 stars
ApproxFunSingularities.jl
Support for spaces with singularities in ApproxFun

Julia · 3 stars

Beginner friendly Everything

Open All

Use discrete Painleve for building recurrences? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#150 · Opened Sep 19, 2026
port over roots from ApproxFunOrthogonalPolynomials.jl Open

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#285 · 1 reaction · 2 assignees · Opened Sep 15, 2026
negative degree Hermite polynomials Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#283 · Opened Aug 29, 2026
Numerical accuracy of the Laguerre polynomials Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#282 · 2 comments · Opened Aug 8, 2026
Laguerre polynomials for complex numbers Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#281 · Opened Aug 8, 2026
Jacobi polymomials with negative integer parameters Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#279 · 1 comment · Opened Jul 26, 2026
v1.2 and v1.3 documentation not deployed Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/FastGaussQuadrature.jl#159 · Opened Jul 8, 2026
Move SphericalCoordinate here and use for eltype of spheres? Open

Difficulty 3/5 1-2 days Newbie friendliness 50/100

JuliaApproximation/DomainSets.jl#183 · 6 comments · Opened Jun 17, 2026
TagBot: Manual intervention needed for releases Open

tagbot-manual

Difficulty 1/5 1-3 hours Newbie friendliness 62/100

JuliaApproximation/ApproxFunBase.jl#683 · Opened Jun 7, 2026
TagBot: Manual intervention needed for releases Open

tagbot-manual

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

JuliaApproximation/FastGaussQuadrature.jl#154 · Opened Jun 4, 2026
TagBot: Manual intervention needed for releases Open

tagbot-manual

Difficulty 1/5 Under an hour Newbie friendliness 82/100

JuliaApproximation/FastGaussQuadrature.jl#151 · Opened May 9, 2026
Loading FastTransforms.jl can make FFTs via FFTW.jl 100x slower due to threading conflicts Open

JuliaApproximation/FastTransforms.jl#267 · 2 reactions · 2 assignees · Opened Apr 9, 2026
Missing Citation from library Open

Difficulty 1/5 1-3 hours Newbie friendliness 78/100

JuliaApproximation/FastGaussQuadrature.jl#148 · Opened Apr 2, 2026
Error when expanding one triangle basis function in another Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

JuliaApproximation/MultivariateOrthogonalPolynomials.jl#217 · 3 comments · Opened Mar 25, 2026
Finite sections of JacobiTriangle Jacobi matrices are ApplyArrays instead of BandedBlockBandedMatrices Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

JuliaApproximation/MultivariateOrthogonalPolynomials.jl#216 · 2 comments · Opened Mar 25, 2026
plan_transform fails with 3D Ultraspherical tensor product Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

JuliaApproximation/FastTransforms.jl#266 · 1 comment · Opened Feb 28, 2026
TagBot: Manual intervention needed for releases Open

tagbot-manual

Difficulty 1/5 Under an hour Newbie friendliness 25/100

JuliaApproximation/ApproxFunSingularities.jl#120 · Opened Jan 3, 2026
v1.1.0 was not released correctly Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/FastGaussQuadrature.jl#145 · 2 comments · Opened Dec 15, 2025
Low Rank Operator does not have transpose defined Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/ApproxFun.jl#971 · Opened Dec 10, 2025
How to add Gauge/Tau Method Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaApproximation/ApproxFun.jl#970 · 3 comments · Opened Dec 8, 2025
trig recurrence accuracy (and speed) vs. precomputed table Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaApproximation/GenericFFT.jl#55 · 1 reaction · Opened Nov 9, 2025
Overload float Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/DomainSets.jl#176 · Opened Oct 22, 2025
Crash on 1.12 when showing `diff(P).args[2]` Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#143 · 3 comments · Opened Oct 21, 2025
Tag v1 Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaApproximation/DomainSets.jl#175 · 6 comments · Opened Oct 10, 2025
LibFastTransforms crashing in tests on 1.12 Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

JuliaApproximation/FastTransforms.jl#263 · 2 comments · Opened Oct 9, 2025
the released version is not compatible with newest Makie Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

JuliaApproximation/ContinuumArrays.jl#205 · 1 comment · Opened Sep 10, 2025
`rand` throws `InexactError` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaApproximation/DomainSets.jl#173 · 1 comment · Opened Jul 22, 2025
cumsum on Laurent space Fun does not work Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/ApproxFun.jl#957 · Opened Jul 11, 2025
Plotting with Makie Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

JuliaApproximation/ApproxFun.jl#956 · Opened Jun 12, 2025
cumsum error Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/ApproxFun.jl#955 · 6 comments · Opened May 19, 2025
ForwardDiff with plan transform fails Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#239 · 1 comment · Opened Apr 2, 2025
Request for `legendre_coefs` & `orthonormal_poly` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/FastGaussQuadrature.jl#135 · 1 comment · Opened Mar 28, 2025
Inverse of Plan Legendre Transform alters input? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#238 · 5 comments · Opened Mar 28, 2025
Remove recursion from SemiclassicalJacobiFamily Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#139 · 1 reaction · Opened Mar 25, 2025
rand fails on PiecewiseSegment domain Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/ApproxFun.jl#952 · Opened Mar 20, 2025
bus error when trying to construct a piecewise discontinuous Fun Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/ApproxFun.jl#951 · Opened Mar 20, 2025
`no method matching checkpoints(::DomainSets.RealNumbers)` when expanding in `Fourier()` with an infinite slice Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#236 · Opened Mar 6, 2025
MethodErrors when expanding in `Fourier()[:, range]` with non-UnitRange `range` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#235 · 1 comment · Opened Mar 6, 2025
`RectPolynomial` tests for conversion/differentation don't test anything (other than it not erroring) Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

JuliaApproximation/MultivariateOrthogonalPolynomials.jl#206 · Opened Mar 1, 2025
Multiple Integrals give different results Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/ApproxFun.jl#950 · 1 comment · Opened Feb 10, 2025
`UndefRefError: access to undefined reference` for large `t` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#135 · Opened Jan 31, 2025
How to specify integration borders for Integro-Differential equation? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/ApproxFun.jl#949 · 2 comments · Opened Jan 17, 2025
Unwanted sine modes appearing in convolution using FFT Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/FastTransforms.jl#257 · 1 comment · Opened Jan 15, 2025
Split package into ClassicalOrthogonalPolynomials.jl and OrthogonalPolynomialArrays.jl Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#221 · 1 comment · Opened Dec 7, 2024
Evaluating SemiclassicalJacobi is not type stable Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#124 · 4 comments · Opened Nov 19, 2024
Switch from SpecialFunctions.jl to Bessels.jl Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaApproximation/FastGaussQuadrature.jl#134 · 3 comments · Opened Nov 19, 2024
Suggestion: Guidance on Choosing Classical Method Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#213 · 2 comments · Opened Nov 19, 2024
Error with indexes like `S[SphericalCoordinate(0.1,0.2), 1:2:end]` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

JuliaApproximation/HarmonicOrthogonalPolynomials.jl#88 · 3 comments · Opened Nov 18, 2024
Layout issue for conversion with `b=-1` Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#123 · 3 comments · Opened Nov 17, 2024
Speed up mul! for Jacobi matrices (X, Y) Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

JuliaApproximation/MultivariateOrthogonalPolynomials.jl#190 · 14 comments · Opened Nov 12, 2024

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