Launch napari and display an image

Launch an instance of napari and simultaneously display an image using the imshow() API. This example can be run to recreate the README image.

Tags: visualization-basic

Python (.py)

Notebook (.ipynb)

/home/runner/work/docs/docs/.venv/lib/python3.12/site-packages/napari/_qt/qt_event_loop.py:50: UserWarning: System theme detection requires a Qt6 backend. Please switch to PyQt6 or PySide6 to use it.
  theme_type=get_system_theme(),
/home/runner/work/docs/docs/.venv/lib/python3.12/site-packages/napari/_qt/qt_event_loop.py:50: UserWarning: System theme detection requires a Qt6 backend. Please switch to PyQt6 or PySide6 to use it.
  theme_type=get_system_theme(),

from skimage import data

import napari

viewer, layers = napari.imshow(data.cells3d(), channel_axis=1, ndisplay=3)

# To recreate the README image uncomment the following lines:
# viewer.window._qt_window.resize(800, 600)
# napari._qt.qt_event_loop.get_qapp().processEvents()  # Ensure the window is done rendering before taking a screenshot
# viewer.screenshot('./src/napari/resources/multichannel_cells.png', canvas_only=False)

if __name__ == '__main__':
    napari.run()