Baseline Removal

This example shows how to remove a baseline from a 1D signal using the pybaselines library.

Create a signal

import hyperspy.api as hs
s = hs.data.two_gaussians()

/opt/hostedtoolcache/Python/3.12.12/x64/lib/python3.12/site-packages/rsciio/utils/rgb_tools.py:62: VisibleDeprecationWarning: The module `rsciio.utils.rgb_tools` has been renamed to `rsciio.utils.rgb` and it will be removed in version 1.0. Use `RGB_DTYPES` instead
  warnings.warn(
/opt/hostedtoolcache/Python/3.12.12/x64/lib/python3.12/site-packages/rsciio/utils/rgb_tools.py:62: VisibleDeprecationWarning: The module `rsciio.utils.rgb_tools` has been renamed to `rsciio.utils.rgb` and it will be removed in version 1.0.
  warnings.warn(

Remove baseline using remove_baseline():

s2 = s.remove_baseline(method="aspls", lam=1E7, inplace=False)

  0%|          | 0/51 [00:00<?, ?it/s]
  2%|▏         | 1/51 [00:04<03:34,  4.28s/it]
 25%|██▌       | 13/51 [00:05<00:11,  3.38it/s]
 29%|██▉       | 15/51 [00:05<00:11,  3.19it/s]
 53%|█████▎    | 27/51 [00:06<00:03,  7.61it/s]
100%|██████████| 51/51 [00:06<00:00,  8.38it/s]

Plot the signal and its baseline:

(s + (s-s2) * 1j).plot()
# Choose the second figure as gallery thumbnail:
# sphinx_gallery_thumbnail_number = 2

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/opt/hostedtoolcache/Python/3.12.12/x64/lib/python3.12/site-packages/rsciio/utils/rgb_tools.py:62: VisibleDeprecationWarning: The module `rsciio.utils.rgb_tools` has been renamed to `rsciio.utils.rgb` and it will be removed in version 1.0.
  warnings.warn(
/opt/hostedtoolcache/Python/3.12.12/x64/lib/python3.12/site-packages/rsciio/utils/rgb_tools.py:62: VisibleDeprecationWarning: The module `rsciio.utils.rgb_tools` has been renamed to `rsciio.utils.rgb` and it will be removed in version 1.0.
  warnings.warn(