Values <1 for `rescale_flank` cause `assertion error` when including central pixel score

[rikrdo89]

Description

When setting a value for rescale_flank in coolpuppy less than 1 (e.g. 0.25 or 0.3), an assertion error is raised in plotpup.py when the central pixel score is included. Specifically, the error is:

Traceback (most recent call last):
  File "/myhome/bin/plotpup.py", line 10, in <module>
    sys.exit(main())
             ^^^^^^
  File "/myhome/lib/python3.12/site-packages/coolpuppy/plotpuppy_CLI.py", line 313, in main
    pups["score"] = pups.apply(
                    ^^^^^^^^^^^
  File "/myhome/lib/python3.12/site-packages/pandas/core/frame.py", line 10374, in apply
    return op.apply().__finalize__(self, method="apply")
           ^^^^^^^^^^
  File "/myhome/lib/python3.12/site-packages/pandas/core/apply.py", line 916, in apply    return self.apply_standard()
           ^^^^^^^^^^^^^^^^^^^^^
  File "/myhome/lib/python3.12/site-packages/pandas/core/apply.py", line 1063, in apply_standard
    results, res_index = self.apply_series_generator()
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/myhome/lib/python3.12/site-packages/pandas/core/apply.py", line 1081, in apply_series_generator
    results[i] = self.func(v, *self.args, **self.kwargs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/myhome/lib/python3.12/site-packages/coolpuppy/lib/puputils.py", line 80, in get_score
    return get_domain_score(pup["data"], pup["rescale_flank"])
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/myhome/lib/python3.12/site-packages/coolpuppy/lib/numutils.py", line 127, in get_domain_score
    assert int(c) == c
           ^^^^^^^^^^^
AssertionError

Steps to Reproduce

1. Run coolpuppy with a fractional value for rescale_flank (e.g., rescale_flank=0.5). It should run without issues.

2. Run plotpup.py and do not use the --no_score flag so that the central pixel score is included.

3. Observe that plotpup.py throws the following error:

   `assert int(c) == c`
   

Expected Behavior

The tool should handle fractional rescale_flank values correctly and compute/plot the central pixel score without raising an assertion error.

Actual Behavior

Using a fractional rescale_flank value without the --no_score flag results in an assertion error in plotpup.py. The workaround is to use --no_score, which bypasses the issue but omits the central pixel score from the plot.

Additional Information

• Environment:
  • Python version: 3.12
  • coolpuppy version: 1.1.0 (installed using conda)
  • matplotlib version: 3.8.4
  • pandas version: 2.2.3