.. 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_pyplots_annotate_transform.py: ================== Annotate Transform ================== This example shows how to use different coordinate systems for annotations. For a complete overview of the annotation capabilities, also see the :doc:`annotation tutorial`. .. code-block:: default import numpy as np import matplotlib.pyplot as plt x = np.arange(0, 10, 0.005) y = np.exp(-x/2.) * np.sin(2*np.pi*x) fig, ax = plt.subplots() ax.plot(x, y) ax.set_xlim(0, 10) ax.set_ylim(-1, 1) xdata, ydata = 5, 0 xdisplay, ydisplay = ax.transData.transform_point((xdata, ydata)) bbox = dict(boxstyle="round", fc="0.8") arrowprops = dict( arrowstyle = "->", connectionstyle = "angle,angleA=0,angleB=90,rad=10") offset = 72 ax.annotate('data = (%.1f, %.1f)'%(xdata, ydata), (xdata, ydata), xytext=(-2*offset, offset), textcoords='offset points', bbox=bbox, arrowprops=arrowprops) disp = ax.annotate('display = (%.1f, %.1f)'%(xdisplay, ydisplay), (xdisplay, ydisplay), xytext=(0.5*offset, -offset), xycoords='figure pixels', textcoords='offset points', bbox=bbox, arrowprops=arrowprops) plt.show() .. image:: /gallery/pyplots/images/sphx_glr_annotate_transform_001.png :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions, methods, classes and modules is shown in this example: .. code-block:: default import matplotlib matplotlib.transforms.Transform.transform_point matplotlib.axes.Axes.annotate matplotlib.pyplot.annotate .. rst-class:: sphx-glr-script-out Out: .. code-block:: none .. _sphx_glr_download_gallery_pyplots_annotate_transform.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: annotate_transform.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: annotate_transform.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_