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mpl_point_clicker documentation

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A library for interactively labelling points with an arbitrary number of classes

pip install mpl_point_clicker

• Left-click to place a point

• Right click to remove the nearest point

• Left click on legend to change classes

• Get positions with .get_positions()

import numpy as np
import matplotlib.pyplot as plt
from mpl_point_clicker import clicker

fig, ax = plt.subplots(constrained_layout=True)
image = np.random.rand(512, 512)
ax.imshow(image, cmap="gray")
klicker = clicker(
   ax,
   ["cell", "pdms", "media"],
   markers=["o", "x", "*"]
)

You can also add scroll to zoom and middle-click and drag to pan with tools from mpl-interactions

from mpl_interactions import zoom_factory, panhandler

fig, ax = plt.subplots(constrained_layout=True)
image = np.random.rand(512, 512)
ax.imshow(image, cmap="gray")

# add zooming and middle click to pan
zoom_factory(ax)
ph = panhandler(fig, button=2)

klicker = clicker(
   ax,
   ["cell", "pdms", "media"],
   markers=["o", "x", "*"]
)

If you have a question on how to do something with mpl_point_clicker a great place to ask it is: https://discourse.matplotlib.org/c/3rdparty/18.

Please report issues to https://github.com/ianhi/mpl-point-clicker/issues/new/choose

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