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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

Add one-sided fractional integral support Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

JuliaApproximation/SingularIntegrals.jl#49 · Opened Nov 12, 2024
when x is the identity, f = sign(x) works while g = sign(x) - x fails because arclength is called with invalid signiture Open

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

JuliaApproximation/ApproxFun.jl#946 · Opened Nov 9, 2024
On using EltypeExtensions Open

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

JuliaApproximation/QuasiArrays.jl#113 · Opened Nov 1, 2024
Can't evaluate `diff(diff(Fourier()))[0.0, [1]]` Open

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

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#210 · Opened Oct 27, 2024
Remove dependency on Calculus.jl Open

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

JuliaApproximation/ApproxFun.jl#944 · 1 comment · Opened Oct 20, 2024
Piracy breaks `expand(Fourier(), cos)` Open

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

JuliaApproximation/HarmonicOrthogonalPolynomials.jl#87 · 2 comments · Opened Oct 10, 2024
Allocating lmul! Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/FastTransforms.jl#253 · 7 comments · Opened Sep 12, 2024
Fast Legendre Transform Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#206 · 17 comments · Opened Sep 3, 2024
Slicing with infinite range tries to evaluate entire matrix Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#120 · 1 comment · Opened Aug 22, 2024
Truncating the identity operator loses sparsity Open

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

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#202 · 1 comment · Opened Aug 13, 2024
Constructing with `t = 1` and `c` non-integer takes an insanely long time Open

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

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#119 · 5 comments · Opened Aug 5, 2024
Infinite loop in `SemiclassicalJacobi(t, a, b, c, P)` constructor Open

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

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#116 · 2 comments · Opened Jul 30, 2024
Why do we still use Lanczos for c ≠ integer? Open

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

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#114 · 7 comments · Opened Jul 24, 2024
Can't use empty vectors in `th_cheb2leg` or `th_leg2cheb` Open

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

JuliaApproximation/FastTransforms.jl#248 · Opened Jul 21, 2024
tests fail on Julia master Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/QuasiArrays.jl#107 · 1 comment · Opened Jun 22, 2024
Any plans for hypersingular integrals common in boundary element method? Open

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

JuliaApproximation/SingularIntegrals.jl#47 · 2 comments · Opened Jun 12, 2024
`RealNumbers` vs `RealLine` Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/DomainSets.jl#165 · 3 comments · 1 reaction · Opened May 16, 2024
Triangle examples in examples/triangleexamples.jl fail Open

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

JuliaApproximation/MultivariateOrthogonalPolynomials.jl#176 · 5 comments · Opened May 6, 2024
Triangles? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaApproximation/DomainSets.jl#161 · 1 comment · 1 reaction · Opened Apr 25, 2024
`isassigned` missing for a `AbstractQuasiArray` Open

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

JuliaApproximation/ContinuumArrays.jl#175 · 1 reaction · Opened Apr 25, 2024
Cannot apply multiplication operator on Fourier() space Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

JuliaApproximation/ApproxFun.jl#941 · Opened Apr 23, 2024
Implementing a convolution operator Open

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

JuliaApproximation/ApproxFun.jl#940 · 7 comments · Opened Apr 15, 2024
Subtracting two simple, seemingly compatible functions (f - g) results in wrong answer upon evaluation (typeof(f) = Chebyshev ⨁ CosSpace ⨁ SinSpace and typeof(g) = Chebyshev) Open

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

JuliaApproximation/ApproxFunBase.jl#646 · Opened Apr 9, 2024
OutOfMemoryError() when approximating a 3D function Open

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

JuliaApproximation/ApproxFun.jl#938 · Opened Apr 1, 2024
Simple error following the documentation Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

JuliaApproximation/ApproxFun.jl#936 · 2 comments · Opened Mar 28, 2024
What is the difference between adjoint and a Derivative (newton solver)? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/ApproxFun.jl#935 · Opened Mar 27, 2024
No DefiniteIntegral() documentation Open

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

JuliaApproximation/ApproxFun.jl#934 · Opened Mar 24, 2024
Definition of `stieltjes`? Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

JuliaApproximation/SingularIntegrals.jl#39 · 1 comment · Opened Mar 22, 2024
Depend on EltypeExtensions.jl? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/DomainSets.jl#159 · 6 comments · Opened Mar 16, 2024
Add new index styles Open

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

JuliaApproximation/QuasiArrays.jl#104 · 1 comment · Opened Mar 7, 2024
Are we able to solve this simple sturm liouville problem taken from chebfun examples? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaApproximation/ApproxFun.jl#930 · 3 comments · Opened Feb 29, 2024
Roadmap for future development of DomainSets Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaApproximation/DomainSets.jl#150 · 3 comments · Opened Feb 20, 2024
arithmetic operations with broadcasting Open

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

JuliaApproximation/DomainSets.jl#148 · Opened Feb 14, 2024
Cannot use `Integral` in Newton solver Open

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

JuliaApproximation/ApproxFun.jl#928 · 5 comments · Opened Feb 6, 2024
Multivariate function roots Open

feature

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

JuliaApproximation/ApproxFun.jl#926 · 12 comments · Opened Dec 20, 2023
Segmentation fault for spherical harmonic transform Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

JuliaApproximation/FastTransforms.jl#238 · 5 comments · Opened Dec 4, 2023
Add weaklaplacian(P,n) and grammatrix(P,n) for nxn truncations? n can be an Int or Block Open

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

JuliaApproximation/ContinuumArrays.jl#171 · Opened Nov 24, 2023
Getting the domain/support of objects, and domain type hierarchy Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaApproximation/DomainSets.jl#146 · 61 comments · Opened Nov 20, 2023
Array concatenations produce unexpected results Open

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

JuliaApproximation/ApproxFun.jl#924 · 1 comment · Opened Nov 3, 2023
Road to v2.0.0 Open

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

JuliaApproximation/FastGaussQuadrature.jl#129 · 3 comments · Opened Oct 10, 2023
Fourier{BigFloat} Open

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

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#155 · 6 comments · Opened Sep 22, 2023
The precision of `gausslegendre` can be improved Open

precision

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

JuliaApproximation/FastGaussQuadrature.jl#126 · 1 comment · Opened Sep 14, 2023
Ambiguities in ClassicalOrthogonalPolynomials and its dependencies Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaApproximation/ClassicalOrthogonalPolynomials.jl#154 · Opened Sep 14, 2023
L2 operator Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaApproximation/ApproxFun.jl#913 · Opened Sep 3, 2023
Division by Fun with root fails: `setdomain(::PiecewiseSpace,::ClosedInterval)` not implement Open

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

JuliaApproximation/ApproxFun.jl#912 · 1 reaction · Opened Aug 28, 2023
Rounding errors lead to empty domain error when using abs Open

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

JuliaApproximation/ApproxFun.jl#906 · Opened Aug 18, 2023
ForwardDiff Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

JuliaApproximation/SemiclassicalOrthogonalPolynomials.jl#85 · 6 comments · Opened Aug 4, 2023
export/document 3-term recurrence coefficients Open

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

JuliaApproximation/FastGaussQuadrature.jl#121 · 3 comments · Opened Jul 21, 2023
Gauss–Kronrod points and weights? Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

JuliaApproximation/FastGaussQuadrature.jl#120 · 5 comments · Opened Jul 19, 2023
higher order and partial differentiation syntax Open

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

JuliaApproximation/ContinuumArrays.jl#154 · 5 comments · Opened Jul 17, 2023

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