The example on the home page does not work

[davidedelvento]

Example script from the home page:

$ cat test_align.py 
from image_registration import chi2_shift
from image_registration.fft_tools import shift
import image_registration

#Generate Sample Image
image = image_registration.tests.make_extended(100)
offset_image = image_registration.tests.make_offset_extended(image, 4.76666, -12.33333333333333333333333, noise=0.1)

#Get Fused Image
xoff, yoff, exoff, eyoff = chi2_shift(image, offset_image)
corrected_image2 = shift.shiftnd(offset_image, (-yoff, -xoff))

Fails with:

$ python test_align.py 
Traceback (most recent call last):
  File "test_align.py", line 7, in <module>
    offset_image = image_registration.tests.make_offset_extended(image, 4.76666, -12.33333333333333333333333, noise=0.1)
  File "/home/davide/venvs/astroimages/lib/python3.8/site-packages/image_registration/tests/registration_testing.py", line 124, in make_offset_extended
    newimage = np.real(shift.shiftnd(img, (ysh, xsh))+noise)
  File "/home/davide/venvs/astroimages/lib/python3.8/site-packages/image_registration/fft_tools/shift.py", line 100, in shiftnd
    freq_grid = np.sum(
  File "<__array_function__ internals>", line 200, in sum
  File "/home/davide/venvs/astroimages/lib/python3.8/site-packages/numpy/core/fromnumeric.py", line 2324, in sum
    return _wrapreduction(a, np.add, 'sum', axis, dtype, out, keepdims=keepdims,
  File "/home/davide/venvs/astroimages/lib/python3.8/site-packages/numpy/core/fromnumeric.py", line 86, in _wrapreduction
    return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
ValueError: setting an array element with a sequence. The requested array has an inhomogeneous shape after 1 dimensions. The detected shape was (2,) + inhomogeneous part.

[keflavich]

I think this was fixed in #57 but I haven't issued a new release yet.

[keflavich]

@davidedelvento this looks fixed locally; could you install the latest and verify?

[davidedelvento]

@keflavich Yes, if I install from github rather than PyPI it works correctly (as the dependencies do too). Perhaps I should rename the issue to "make a release and post it on PyPI"? 😄

[keflavich]

I made a new release this morning. 0.2.9 should have the fix