"""
================
Using span_where
================

Illustrate some helper functions for shading regions where a logical
mask is True

See :meth:`matplotlib.collections.BrokenBarHCollection.span_where`
"""
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.collections as collections


t = np.arange(0.0, 2, 0.01)
s1 = np.sin(2*np.pi*t)
s2 = 1.2*np.sin(4*np.pi*t)


fig, ax = plt.subplots()
ax.set_title('using span_where')
ax.plot(t, s1, color='black')
ax.axhline(0, color='black', lw=2)

collection = collections.BrokenBarHCollection.span_where(
    t, ymin=0, ymax=1, where=s1 > 0, facecolor='green', alpha=0.5)
ax.add_collection(collection)

collection = collections.BrokenBarHCollection.span_where(
    t, ymin=-1, ymax=0, where=s1 < 0, facecolor='red', alpha=0.5)
ax.add_collection(collection)


plt.show() 

　

M:\______\span_regions.py:26: MatplotlibDeprecationWarning: 
    The span_where function was deprecated in Matplotlib 3.7 and will be 
    removed two minor releases later. Use fill_between instead.
  collection = collections.BrokenBarHCollection.span_where(
M:\______\span_regions.py:26: MatplotlibDeprecationWarning: 
    The BrokenBarHCollection class was deprecated in Matplotlib 3.7 and 
    will be removed two minor releases later.
  collection = collections.BrokenBarHCollection.span_where(
M:\______\span_regions.py:30: MatplotlibDeprecationWarning: 
    The span_where function was deprecated in Matplotlib 3.7 and will be 
    removed two minor releases later. Use fill_between instead.
  collection = collections.BrokenBarHCollection.span_where(
M:\______\span_regions.py:30: MatplotlibDeprecationWarning: 
    The BrokenBarHCollection class was deprecated in Matplotlib 3.7 and 
    will be removed two minor releases later.
  collection = collections.BrokenBarHCollection.span_where( 

E:\______\span_regions.py:26: MatplotlibDeprecationWarning: 
    The span_where function was deprecated in Matplotlib 3.7 and will be 
    removed two minor releases later. Use fill_between instead.
  collection = collections.BrokenBarHCollection.span_where(
E:\______\span_regions.py:26: MatplotlibDeprecationWarning: 
    The BrokenBarHCollection class was deprecated in Matplotlib 3.7 and 
    will be removed two minor releases later. 
    collection = collections.BrokenBarHCollection.span_where(
E:\______\span_regions.py:30: MatplotlibDeprecationWarning: 
    The span_where function was deprecated in Matplotlib 3.7 and will be 
    removed two minor releases later. Use fill_between instead.
  collection = collections.BrokenBarHCollection.span_where(
E:\______\span_regions.py:30: MatplotlibDeprecationWarning: 
    The BrokenBarHCollection class was deprecated in Matplotlib 3.7 and 
    will be removed two minor releases later.
  collection = collections.BrokenBarHCollection.span_where( 

• 2023/11/10 Ver=1.04 Python 3.12.0 (matplotlib 3.8.1)で確認
• 2023/11/10 Ver=1.04 Python 3.11.6 (matplotlib 3.7.1)で確認
• 2023/03/27 Ver=1.03 Python 3.11.2 で確認
• 2020/10/29 Ver=1.01 Python 3.7.8 で確認
• 2018/11/23 Ver=1.01 初版リリース

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