UserWarning: Glyph 22270 (\N{CJK UNIFIED IDEOGRAPH-56FE}) missing from current font. FigureCanvasAgg.draw(self)

这个UserWarning是在使用Python的matplotlib库绘制图表时产生的，特别是当你尝试在缺少特定字符的字体上显示包含中文（如“\N{CJK UNIFIED IDEOGRAPH-56FE}”代表汉字“雪”）的文本时。警告提示你当前的图形渲染引擎（在这里是Agg后缀的Canvas）找不到用于正确显示该汉字的字体。

解决这个问题通常需要安装支持更多Unicode字符的字体，或者在绘图前设置合适的字体。你可以通过以下步骤处理：

1. **安装字体**：确保系统中安装了能够显示所需字符的字体，比如`simhei`, `simsun`, 或者 `SimHei`等中文字体。

import matplotlib.pyplot as plt
plt.rcParams['font.sans-serif'] = ['SimHei']  # 添加中文字体

2. **设置字体**：在创建图表前设置matplotlib的字体属性。

fig, ax = plt.subplots()
ax.set_fontproperties(matplotlib.font_manager.FontProperties(fname='simhei.ttf'))  # 使用.ttf格式的字体文件

完成上述操作后，再绘制图表应该就不会收到这个警告了。如果仍然有问题，检查你的环境变量和路径设置，确保找到并能加载正确的字体文件。

相关问题

E:\visualization\analysis\1.py:80: MatplotlibDeprecationWarning: Support for FigureCanvases without a required_interactive_framework attribute was deprecated in Matplotlib 3.6 and will be removed two minor releases later. plt.show() C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 21508 (\N{CJK UNIFIED IDEOGRAPH-5404}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 20010 (\N{CJK UNIFIED IDEOGRAPH-4E2A}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 26376 (\N{CJK UNIFIED IDEOGRAPH-6708}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 20221 (\N{CJK UNIFIED IDEOGRAPH-4EFD}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 30340 (\N{CJK UNIFIED IDEOGRAPH-7684}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 38144 (\N{CJK UNIFIED IDEOGRAPH-9500}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 21806 (\N{CJK UNIFIED IDEOGRAPH-552E}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 24773 (\N{CJK UNIFIED IDEOGRAPH-60C5}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 20917 (\N{CJK UNIFIED IDEOGRAPH-51B5}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 36135 (\N{CJK UNIFIED IDEOGRAPH-8D27}) missing from current font. FigureCanvasAgg.draw(self) C:\Program Files\JetBrains\PyCharm 2021.3\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 21697 (\N{CJK UNIFIED IDEOGRAPH-54C1}) missing from current font. FigureCanvasAgg.draw(self) Process finished with exit code 0

这是一些Matplotlib的警告信息。其中第一条警告表示，Matplotlib 3.6版本开始不再支持没有“required_interactive_framework”属性的FigureCanvases，这个属性用于指定绘图所需的交互式框架。如果你的代码中使用了这样的FigureCanvas，建议更新Matplotlib版本或修改代码以使用最新的FigureCanvas。

其他的警告则是指出当前字体中缺少一些中文字符，这可能会影响绘图结果的显示效果。可以通过更换字体或安装支持中文字符的字体来解决这个问题。

这些警告信息并不会影响代码的运行，只是提醒你可能需要注意一些绘图的细节问题。建议在代码中加入以下语句来禁止警告的输出：

import warnings

warnings.filterwarnings("ignore")

D:\python\python3.9.5\python.exe C:/Users/马斌/Desktop/NGSIM_data_processing/30s/x-y.py C:\Users\马斌\Desktop\NGSIM_data_processing\30s\x-y.py:12: MatplotlibDeprecationWarning: Support for FigureCanvases without a required_interactive_framework attribute was deprecated in Matplotlib 3.6 and will be removed two minor releases later. plt.plot(x, y) C:\Users\马斌\Desktop\NGSIM_data_processing\30s\x-y.py:20: MatplotlibDeprecationWarning: Support for FigureCanvases without a required_interactive_framework attribute was deprecated in Matplotlib 3.6 and will be removed two minor releases later. plt.show() D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 36724 (\N{CJK UNIFIED IDEOGRAPH-8F74}) missing from current font. self.figure.tight_layout() D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 25968 (\N{CJK UNIFIED IDEOGRAPH-6570}) missing from current font. self.figure.tight_layout() D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 25454 (\N{CJK UNIFIED IDEOGRAPH-636E}) missing from current font. self.figure.tight_layout() D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 20998 (\N{CJK UNIFIED IDEOGRAPH-5206}) missing from current font. self.figure.tight_layout() D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:68: UserWarning: Glyph 26512 (\N{CJK UNIFIED IDEOGRAPH-6790}) missing from current font. self.figure.tight_layout() D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:69: UserWarning: Glyph 36724 (\N{CJK UNIFIED IDEOGRAPH-8F74}) missing from current font. FigureCanvasAgg.draw(self) D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:69: UserWarning: Glyph 25968 (\N{CJK UNIFIED IDEOGRAPH-6570}) missing from current font. FigureCanvasAgg.draw(self) D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:69: UserWarning: Glyph 25454 (\N{CJK UNIFIED IDEOGRAPH-636E}) missing from current font. FigureCanvasAgg.draw(self) D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:69: UserWarning: Glyph 20998 (\N{CJK UNIFIED IDEOGRAPH-5206}) missing from current font. FigureCanvasAgg.draw(self) D:\pyCharm\PyCharm 2020.2\plugins\python\helpers\pycharm_matplotlib_backend\backend_interagg.py:69: UserWarning: Glyph 26512 (\N{CJK UNIFIED IDEOGRAPH-6790}) missing from current font. FigureCanvasAgg.draw(self)

这是一个警告信息，提示你的字体库中缺少一些字符，可能会导致图形显示不完全或乱码。你可以通过更改字体或安装缺失的字体来解决这个问题。同时，还有一个关于 FigureCanvas 的警告，这意味着 Matplotlib 将不再支持没有 required_interactive_framework 属性的 FigureCanvas，在未来的版本中可能会被删除。