Ellipse markers

Create a signal

import hyperspy.api as hs
import numpy as np

# Create a Signal2D with 2 navigation dimensions
rng = np.random.default_rng(0)
data = np.ones((25, 25, 100, 100))
s = hs.signals.Signal2D(data)

This first example shows how to draw static ellipses

# Define the position of the ellipses
offsets = rng.random((10, 2)) * 100

m = hs.plot.markers.Ellipses(
    widths=(8,),
    heights=(10,),
    angles=(45,),
    offsets=offsets,
    facecolor="red",
    )

s.plot()
s.add_marker(m)

• 
• 

/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(
/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(

Dynamic Ellipse Markers

This first example shows how to draw dynamic ellipses, whose position, widths heights and angles depends on the navigation coordinates

s2 = hs.signals.Signal2D(data)

widths = np.empty(s.axes_manager.navigation_shape, dtype=object)
heights = np.empty(s.axes_manager.navigation_shape, dtype=object)
angles = np.empty(s.axes_manager.navigation_shape, dtype=object)
offsets = np.empty(s.axes_manager.navigation_shape, dtype=object)

for index in np.ndindex(offsets.shape):
    widths[index] = rng.random((10, )) * 10
    heights[index] = rng.random((10, )) * 7
    angles[index] = rng.random((10, )) * 180
    offsets[index] = rng.random((10, 2)) * 100


m = hs.plot.markers.Ellipses(
    widths=widths,
    heights=heights,
    angles=angles,
    offsets=offsets,
    facecolor="red",
    )

s2.plot()
s2.add_marker(m)

• 
• 

/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(
/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(

sphinx_gallery_thumbnail_number = 2