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closes #176
@sbillinge ready for review

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please see comments

The array of :math:`q` values np.array([qs]).
The units for the q-values are the inverse of the units of the provided wavelength.
This is the correct format for loading into diffpy.utils.DiffractionOject.on_q
This is the correct format for loading into diffpy.utils.DiffractionObject.on_q.
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delete, as discussed.

The array of :math:`d` values np.array([ds]).
"""
if 0 in q:
raise ValueError(invalid_input_emsg)
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just make this np.inf but also give a warning message that the largest d is infinite and can't be plotted? Something like that?

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@sbillinge updated. please review again.

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codecov bot commented Dec 6, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.17%. Comparing base (ed9fb03) to head (39f1c54).
Report is 18 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main     #197      +/-   ##
==========================================
- Coverage   96.53%   94.17%   -2.37%     
==========================================
  Files           8        8              
  Lines         289      309      +20     
==========================================
+ Hits          279      291      +12     
- Misses         10       18       +8     
Files with missing lines Coverage Δ
tests/test_transforms.py 100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

invalid_input_emsg = (
"Input values have resulted in an infinite output. Please ensure there are no zeros in the input."
)
inf_output_msg = "WARNING: The largest output is infinite and cannot be plotted."
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@sbillinge out of curiosity,

for both error and warning messages, do we still want to maintain our convention of 1) reason for error, (2) what to do to fix it ?

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I tweaked this a bit and downgraded it to an INFO from a WARNING....don't want users to freak out....

@sbillinge sbillinge merged commit e6827a6 into diffpy:main Dec 7, 2024
4 of 5 checks passed
@yucongalicechen yucongalicechen deleted the qd branch December 7, 2024 01:15
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diffraction objects implement d_to_q, q_to_d

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