Create Map from CircleROI in signal space¶

Use the :func:~.api.plot.plot_roi_map function to create interactive maps defined from a :class:~.api.roi.CircleROI in signal space.

In [ ]:

import hyperspy.api as hs
import numpy as np

Create a signal:

In [ ]:

rng = np.random.default_rng(0)
data = rng.random(size=(100, 100, 50, 50))
s = hs.signals.Signal2D(data)

Add 2 ROIs in signal space and map the corresponding signal using :func:~.api.plot.plot_roi_map. The ROIs are added to the plot of the signal and by default a :class:~.api.roi.RectangularROI is used

In [ ]:

s.plot()
roi = hs.plot.plot_roi_map(s, rois=2)

Same as above but with using :class:~.api.roi.CircleROI with predefined position:

In [ ]:

roi1 = hs.roi.CircleROI(cx=25, cy=25, r=5)
roi2 = hs.roi.CircleROI(cx=25, cy=25, r=15, r_inner=10)
s.plot()
roi = hs.plot.plot_roi_map(s, rois=[roi1, roi2])
# Choose this figure as gallery thumbnail:
# sphinx_gallery_thumbnail_number = 6