.. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_gallery_misc_bbox_intersect.py: =========================================== Changing colors of lines intersecting a box =========================================== The lines intersecting the rectangle are colored in red, while the others are left as blue lines. This example showcases the `.intersects_bbox` function. .. image:: /gallery/misc/images/sphx_glr_bbox_intersect_001.png :class: sphx-glr-single-img .. code-block:: default import numpy as np import matplotlib.pyplot as plt from matplotlib.transforms import Bbox from matplotlib.path import Path # Fixing random state for reproducibility np.random.seed(19680801) left, bottom, width, height = (-1, -1, 2, 2) rect = plt.Rectangle((left, bottom), width, height, facecolor="black", alpha=0.1) fig, ax = plt.subplots() ax.add_patch(rect) bbox = Bbox.from_bounds(left, bottom, width, height) for i in range(12): vertices = (np.random.random((2, 2)) - 0.5) * 6.0 path = Path(vertices) if path.intersects_bbox(bbox): color = 'r' else: color = 'b' ax.plot(vertices[:, 0], vertices[:, 1], color=color) plt.show() .. _sphx_glr_download_gallery_misc_bbox_intersect.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: bbox_intersect.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: bbox_intersect.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_