JuliaApproximation / JuliaApproximation/ApproxFunFourier.jl

Fix Fourier itransform with even number of points

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Dominant language
Julia
Stars
7
Forks
4
PR merge metrics
No merged PRs in 30d

Description

julia> f = Fun(Fourier(), randn(5));

julia> f.(points(f)) ≈ values(f)
true

julia> f = Fun(Fourier(), randn(6));

julia> f.(points(f)) ≈ values(f)
false

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the odd- and even-point examples from the issue, then inspect the Fourier itransform implementation and its related tests or entry points. The work is done when evaluating the even-point Fun at points(f) agrees with values(f), as it already does for five points.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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