I want to do fft and want to write the result on a predefined array. However, there is a problem with this when the source and target arrays are both views: using FFTW, LinearAlgebra M = randn(100,100,100) C = @view M[:,:,1] B = plan_fft(C) A = @view M[:,:,2] mul!(A,B,C) ERROR: MethodError: no me…

Fundamentally, you need a complex destination for your FFT, and then the docs for the AbstractFFT interface make it clear that the mul! interface requires both input and output to be complex arrays : julia> using FFTW, LinearAlgebra julia> M = randn(100, 100, 100); julia> Mc = complex(M); julia> …

True, a hastily distilled example. Thank you. But in the problem code the target is complex. I will have to revisit … I must have misdiagnosed the issue

maybe you are using plan_rfft and you see something similar to [image] `plan_rfft` together used with `mul!` and `@view` complains about wrong-strides-output Signal and Image Processing Hey, initially I wanted to have rfft! but since it doesn’t exist, I tried the workaro…

FFT with @view

General Usage

roflmaostc November 27, 2024, 8:38am 4

maybe you are using plan_rfft and you see something similar to

Topic		Replies	Views
`plan_rfft` together used with `mul!` and `@view` complains about wrong-strides-output Signal and Image Processing fftw , views	24	1725	March 30, 2021
Why I can't use mul! and plan_fft together? New to Julia question , fftw , bug , linearalgebra	4	1126	January 26, 2022
InPlace FFT Plan and view General Usage question	4	1325	July 15, 2020
Five argument mul! in FFTW Numerics question	3	821	May 10, 2020
Apply array function such as fft to nested array New to Julia fftw , arrays	2	604	August 25, 2021

FFT with @view

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