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matplotlib animation 16_unchained. |
H.Kamifuji . |
- unchained.py
パルサーの擬似信号からの周波数の比較パスの実証。
（主にJoy DivisionのUnknown Pleasuresのカバーのために知られています）
""" ======================== MATPLOTLIB **UNCHAINED** ======================== Comparative path demonstration of frequency from a fake signal of a pulsar. (mostly known because of the cover for Joy Division's Unknown Pleasures) Author: Nicolas P. Rougier """ import numpy as np import matplotlib.pyplot as plt import matplotlib.animation as animation # Create new Figure with black background fig = plt.figure(figsize=(8, 8), facecolor='black') # Add a subplot with no frame ax = plt.subplot(111, frameon=False) # Generate random data data = np.random.uniform(0, 1, (64, 75)) X = np.linspace(-1, 1, data.shape[-1]) G = 1.5 * np.exp(-4 * X * X) # Generate line plots lines = [] for i in range(len(data)): # Small reduction of the X extents to get a cheap perspective effect xscale = 1 - i / 200. # Same for linewidth (thicker strokes on bottom) lw = 1.5 - i / 100.0 line, = ax.plot(xscale * X, i + G * data[i], color="w", lw=lw) lines.append(line) # Set y limit (or first line is cropped because of thickness) ax.set_ylim(-1, 70) # No ticks ax.set_xticks([]) ax.set_yticks([]) # 2 part titles to get different font weights ax.text(0.5, 1.0, "MATPLOTLIB ", transform=ax.transAxes, ha="right", va="bottom", color="w", family="sans-serif", fontweight="light", fontsize=16) ax.text(0.5, 1.0, "UNCHAINED", transform=ax.transAxes, ha="left", va="bottom", color="w", family="sans-serif", fontweight="bold", fontsize=16) def update(*args): # Shift all data to the right data[:, 1:] = data[:, :-1] # Fill-in new values data[:, 0] = np.random.uniform(0, 1, len(data)) # Update data for i in range(len(data)): lines[i].set_ydata(i + G * data[i]) # Return modified artists return lines # Construct the animation, using the update function as the animation # director. anim = animation.FuncAnimation(fig, update, interval=10) anim.save('unchained_org.mp4', fps=15) plt.show()
- 実行結果の動画( unchained_01.mp4 )
実行結果の動画です。anim.save('unchained_org.mp4', fps=15) で保存された動画は、真っ白けなので、スクリーンキャプチャした動画を掲載します。
Python 3.11.6 (matplotlib 3.7.1) および Python 3.12.0 (matplotlib 3.8.1) で、確認したところ、無限ループであることが分かった。save_count=300 を追加して、20 秒の動画作成しました。
""" ======================== MATPLOTLIB **UNCHAINED** ======================== Comparative path demonstration of frequency from a fake signal of a pulsar. (mostly known because of the cover for Joy Division's Unknown Pleasures) Author: Nicolas P. Rougier """ import numpy as np import matplotlib.pyplot as plt import matplotlib.animation as animation # Create new Figure with black background fig = plt.figure(figsize=(7, 7), facecolor='black') # Add a subplot with no frame ax = plt.subplot(111, frameon=False) # Generate random data data = np.random.uniform(0, 1, (64, 75)) X = np.linspace(-1, 1, data.shape[-1]) G = 1.5 * np.exp(-4 * X * X) # Generate line plots lines = [] for i in range(len(data)): # Small reduction of the X extents to get a cheap perspective effect xscale = 1 - i / 200. # Same for linewidth (thicker strokes on bottom) lw = 1.5 - i / 100.0 line, = ax.plot(xscale * X, i + G * data[i], color="w", lw=lw) lines.append(line) # Set y limit (or first line is cropped because of thickness) ax.set_ylim(-1, 70) # No ticks ax.set_xticks([]) ax.set_yticks([]) # 2 part titles to get different font weights ax.text(0.5, 1.0, "MATPLOTLIB ", transform=ax.transAxes, ha="right", va="bottom", color="w", family="sans-serif", fontweight="light", fontsize=16) ax.text(0.5, 1.0, "UNCHAINED", transform=ax.transAxes, ha="left", va="bottom", color="w", family="sans-serif", fontweight="bold", fontsize=16) def update(*args): # Shift all data to the right data[:, 1:] = data[:, :-1] # Fill-in new values data[:, 0] = np.random.uniform(0, 1, len(data)) # Update data for i in range(len(data)): lines[i].set_ydata(i + G * data[i]) # Return modified artists return lines # Construct the animation, using the update function as the animation # director. anim = animation.FuncAnimation(fig, update, interval=10, save_count=300) anim.save('unchained_4.mp4', fps=15) plt.show()実行結果の動画(unchained_4.mp4) です。ループ再生します。
- 参照ページ
animation example code: unchained.py
- リリースノート
- 2023/11/08 Ver=1.04 Python 3.12.0 (matplotlib 3.8.1)で確認
- 2023/11/08 Ver=1.04 Python 3.11.6 (matplotlib 3.7.1)で確認
- 2023/03/26 Ver=1.03 Python 3.11.2 で確認
- 2020/10/29 Ver=1.01 Python 3.7.8 で確認
- 2018/11/18 Ver=1.01 初版リリース
- 関連ページ