Navigator ROI

Use a RectangularROI to take the sum of an area of the navigation space.

import hyperspy.api as hs

Create a signal:

s = hs.data.two_gaussians()

Create the roi, here a RectangularROI for the two dimension navigation space:

roi = hs.roi.RectangularROI()

Slice signal with roi with the ROI. By using the interactive function, the output signal s_roi will update automatically. The ROI will be added automatically on the signal figure.

By default, the ROI will be added to the navigation or signal. We specify recompute_out_event=None to avoid redundant computation when changing the ROI

s.plot()
s_roi = roi.interactive(s, recompute_out_event=None, color='C1')

# We use :py:class:`~.interactive` function to compute the sum over the ROI interactively:

roi_sum = hs.interactive(s_roi.sum, recompute_out_event=None)

# Choose the second figure as gallery thumbnail:
# sphinx_gallery_thumbnail_number = 1

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Plot the signal sliced by the ROI:

roi_sum.plot()