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allow uneven length #65

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zhaotingchen
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fix #64

Still need doc updates and tests to cover uneven length cases

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codecov bot commented Jun 27, 2024

Codecov Report

Attention: Patch coverage is 92.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 91.28%. Comparing base (b739a54) to head (9af9af1).
Report is 2 commits behind head on main.

Files Patch % Lines
src/powerbox/powerbox.py 92.50% 3 Missing ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##             main      #65      +/-   ##
==========================================
- Coverage   92.53%   91.28%   -1.25%     
==========================================
  Files           5        5              
  Lines         442      459      +17     
==========================================
+ Hits          409      419      +10     
- Misses         33       40       +7     
Flag Coverage Δ
unittests 91.28% <92.50%> (-1.25%) ⬇️

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@steven-murray steven-murray left a comment

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Thanks @zhaotingchen! This has been something that I've considered for quite a while. I think this all looks good, but I definitely want some tests and docs in there. We'll want to do a full-circle test (produce box with power spectrum, compute power spectrum from box, make sure it matches the input). You could use pytest.mark.parametrize to check a bunch of different shapes.


def k(self):
"""The entire grid of wavenumber magitudes."""
return _magnitude_grid(self.kvec, self.dim)
kval = np.meshgrid(*self.kvec, indexing="ij")
kmode = np.sqrt(np.sum([k_i**2 for k_i in kval], axis=0))
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I think this could just be np.sqrt(np.sum(kval**2, axis=0))

Comment on lines +186 to +188
for i in range(self.dim):
kvec_i = self.fftbackend.fftfreq(self.N[i], d=self.dx[i], b=self.fourier_b)
kvec_arr += (kvec_i,)
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this could probably just be a comprehension:

kvecarr = tuple(self.fftbackend.fftfreq(self.N[i], d=self.dx[i], b=self.fourier_b) for i in range(self.dim))

self.boxlength = boxlength
if isinstance(self.boxlength, numbers.Number):
self.boxlength = [self.boxlength] * self.dim
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Somewhere in the __init__ there should be some checks that the length of N and boxsize are the same, and equivalent to dim.


@property
def r(self):
"""The radial position of every point in the grid."""
return _magnitude_grid(self.x, self.dim)
xval = np.meshgrid(*self.x, indexing="ij")
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we could probably instead just update _magnitude_grid to be able to handle a tuple of arrays

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Unequal lengths and grid size for box
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