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Hi,

These commands should work.

> Also the size becomes different from the particle size (400 X 400)
> and the output spectrum is with the size (210 X 400)

Are you sure it was 210? It should be 201 x 400, not 210 x 400.

Because the input images are real numbers, the reciprocal space has
Hermitian symmetry (= Friedel's law in crystallography).
So we write only half of the reciprocal space.

Best regards,

Takanori Nakane

> Hi RELION developers,
> I have noticed in relion_image_handler module, there are three option
> --avg_ampl --avg_ampl2 --avg_ampl2_ali and from the description, it seems
> being able to generate average power spectrum. However, when I quickly
> tried with my particle star files with any one of these options specified,
> the output was not anything meaningful. Also the size becomes different
> from the particle size (400 X 400) and the output spectrum is with the
> size (210 X 400), which seems confusing. I am wondering if this is a fully
> developed function or did I do something wrong?
> Best,
> Yangqi
>
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