fix(step5/step5.5): 掩膜.shp智能替身为.dat、band_math.eval注入np.nan/np.inf命名空间
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@ -96,6 +96,19 @@ class DataPreparationStep:
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if final_boundary_path is None and water_mask_path is not None:
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final_boundary_path = water_mask_path
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# 【新增安全防护】智能拦截矢量 .shp,强制替换为步骤 1 生成的栅格 .dat
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if final_boundary_path and str(final_boundary_path).lower().endswith('.shp'):
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# 向上追溯查找 1_water_mask 目录下的 dat 替身
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possible_dat = Path(deglint_img_path).parent.parent / "1_water_mask" / "water_mask_from_shp.dat"
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if not possible_dat.exists() and output_path:
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possible_dat = Path(output_path).parent.parent / "1_water_mask" / "water_mask_from_shp.dat"
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if possible_dat.exists():
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print(f"💡 智能拦截:检测到输入掩膜为矢量 .shp,自动切换为已生成的栅格掩膜: {possible_dat}")
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final_boundary_path = str(possible_dat)
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else:
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print(f"⚠️ 警告:检测到输入掩膜为 .shp 且未找到对应 .dat 替身,可能导致底层读取失败。")
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flare_path = glint_mask_path
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if flare_path:
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print(f"光谱提取使用耀斑掩膜: {flare_path}")
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@ -96,8 +96,14 @@ class BandMathCalculator:
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print(f"计算表达式: {calc_expression}")
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# 安全地计算表达式
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result = eval(calc_expression)
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# 【新增安全防护】引入 numpy 命名空间,让 eval 引擎安全识别 nan 与 inf
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import numpy as np
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try:
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# 即使 calc_expression 含有纯字符 nan,也能被 np.nan 安全接管
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result = eval(calc_expression, {"__builtins__": None}, {"nan": np.nan, "inf": np.inf, "np": np})
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except Exception as e:
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print(f"⚠️ 警告:公式计算异常 ({e}),该点赋值为 nan")
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result = np.nan
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# 返回结果
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if var_name:
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