mit einem Klick
cjk-viz
// CJK (中日韩) 字体检测与 matplotlib 配置。任何涉及中文标签、标题、图例的 可视化任务启动前必须先执行本 skill 的字体检测流程,确保不会出现方块乱码。 适用于 matplotlib / seaborn / plotly 静态导出等场景。
// CJK (中日韩) 字体检测与 matplotlib 配置。任何涉及中文标签、标题、图例的 可视化任务启动前必须先执行本 skill 的字体检测流程,确保不会出现方块乱码。 适用于 matplotlib / seaborn / plotly 静态导出等场景。
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| name | cjk-viz |
| description | CJK (中日韩) 字体检测与 matplotlib 配置。任何涉及中文标签、标题、图例的 可视化任务启动前必须先执行本 skill 的字体检测流程,确保不会出现方块乱码。 适用于 matplotlib / seaborn / plotly 静态导出等场景。 |
| version | 1.0.0 |
| metadata | {"openclaw":{"emoji":"🔤"}} |
任何绘图代码中包含中文文本(标题、轴标签、图例、注释)时,必须在绘图前 执行字体检测。不要假设某个字体一定存在。
将 scripts/setup_cjk_font.py 复制到工作目录,或直接引用:
import sys, os
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'skills/cjk-viz/scripts'))
from setup_cjk_font import setup_cjk_font
font_name = setup_cjk_font() # 自动检测、配置、返回字体名
# 如果返回 None,说明系统无可用 CJK 字体,会打印警告
调用后 plt.rcParams 已经配置好,直接绘图即可。
如果不想引入外部文件,在脚本开头加入:
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import matplotlib.font_manager as fm
def _setup_cjk():
candidates = [
'Noto Sans CJK SC', 'Noto Sans SC', 'Source Han Sans SC',
'WenQuanYi Micro Hei', 'WenQuanYi Zen Hei',
'Droid Sans Fallback', 'AR PL UMing CN',
'SimHei', 'Microsoft YaHei', 'PingFang SC',
]
available = {f.name for f in fm.fontManager.ttflist}
for name in candidates:
if name in available:
plt.rcParams['font.sans-serif'] = [name, 'DejaVu Sans']
plt.rcParams['axes.unicode_minus'] = False
return name
# 尝试从常见路径加载 .ttf
search_paths = [
'/usr/share/fonts', '/usr/local/share/fonts',
os.path.expanduser('~/.local/share/fonts'),
os.path.join(os.path.dirname(__file__), 'fonts'),
]
for base in search_paths:
for root, _, files in os.walk(base):
for f in files:
if f.lower().endswith('.ttf') and any(
k in f.lower() for k in ['noto', 'cjk', 'hei', 'han', 'wenquan', 'droid']
):
path = os.path.join(root, f)
fm.fontManager.addfont(path)
prop = fm.FontProperties(fname=path)
name = prop.get_name()
plt.rcParams['font.sans-serif'] = [name, 'DejaVu Sans']
plt.rcParams['axes.unicode_minus'] = False
return name
print("⚠️ 未找到 CJK 字体,中文可能显示为方块。")
print(" 安装建议: apt install fonts-noto-cjk 或 pip install matplotlib-cjk-fonts")
return None
_cjk_font = _setup_cjk()
如果检测失败,在 Docker 容器内安装:
apt-get update && apt-get install -y fonts-noto-cjk
# 或者用 pip 安装打包好的字体
pip install matplotlib-cjk-fonts
安装后需要清除 matplotlib 字体缓存:
import matplotlib
import shutil, os
cache_dir = matplotlib.get_cachedir()
if os.path.exists(cache_dir):
shutil.rmtree(cache_dir)
print(f"已清除缓存: {cache_dir}")
.ttc 文件与 matplotlib这是最常见的坑。 很多 Linux/Docker 环境安装的 CJK 字体是 .ttc(TrueType Collection)
格式(如 NotoSansCJK-Regular.ttc),matplotlib 能检测到但 rcParams 设置后不生效。
setup_cjk_font() 报告成功,但图片中文仍显示为方块 □□□findfont() 能找到字体文件,但渲染时不使用对 .ttc 文件,必须用 FontProperties(fname=path) 显式传给每个文本元素:
from matplotlib.font_manager import FontProperties
# 全局 FontProperties 对象
CJK_FP = FontProperties(fname='/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc')
# 用法: 每个含中文的文本元素都要传 fontproperties=CJK_FP
ax.set_xlabel('中文标签', fontproperties=CJK_FP)
ax.set_ylabel('中文标签', fontproperties=CJK_FP)
ax.set_title('中文标题', fontproperties=CJK_FP)
ax.set_yticklabels(chinese_labels, fontproperties=CJK_FP)
# legend 需要特殊处理: prop= 设置条目字体, title 需要单独设置
ax.legend(title='中文图例标题', prop=CJK_FP)
ax.get_legend().get_title().set_fontproperties(CJK_FP)
# suptitle 同理
plt.suptitle('中文总标题', fontproperties=CJK_FP)
.ttf 文件 → 可以用 rcParams 全局设置,最省事.ttc 文件 → 必须用 FontProperties(fname=) 逐个传参.ttfscripts/setup_cjk_font.py 的 setup_cjk_font() 会优先找 .ttf,
找不到时返回 .ttc 路径。调用 get_cjk_fp() 获取 FontProperties 对象。
按以下顺序尝试(覆盖大多数 Linux / Docker / macOS 环境):
| 优先级 | 字体名 | 常见来源 |
|---|---|---|
| 1 | Noto Sans CJK SC | fonts-noto-cjk (Debian/Ubuntu) |
| 2 | Noto Sans SC | Google Fonts |
| 3 | Source Han Sans SC | Adobe 思源黑体 |
| 4 | WenQuanYi Micro Hei | fonts-wqy-microhei |
| 5 | WenQuanYi Zen Hei | fonts-wqy-zenhei |
| 6 | Droid Sans Fallback | Android / 旧版 Docker 镜像 |
| 7 | AR PL UMing CN | fonts-arphic-uming |
| 8 | SimHei | Windows |
| 9 | Microsoft YaHei | Windows |
| 10 | PingFang SC | macOS |
scientific-visualization 或 matplotlib skill 时,先执行本 skill 的字体配置plotly 生成静态图片(write_image)时同样需要配置字体biomed-dispatch 的 prompt 中可以加入:"绘图前先运行 cjk-viz 字体检测"绘图后可以用以下代码快速验证中文是否正常渲染:
fig, ax = plt.subplots(figsize=(4, 2))
ax.text(0.5, 0.5, '中文测试 Chinese Test 123',
ha='center', va='center', fontsize=16, transform=ax.transAxes)
ax.set_title('字体验证')
fig.savefig('/workspace/outputs/cjk_font_test.png', dpi=100, bbox_inches='tight')
print("✅ 验证图已保存,请检查中文是否正常显示")