SOR
77 lines
2.2 KiB
Python
77 lines
2.2 KiB
Python
import math
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from decimal import Decimal, ROUND_HALF_EVEN
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def get_decimal_places(data_strings):
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"""获取输入数据中小数点后的位数，用于自适应展示"""
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max_places = 0
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for s in data_strings:
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if '.' in s:
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places = len(s.split('.')[1])
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max_places = max(max_places, places)
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return max_places
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def scientific_round(value, uncertainty):
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"""
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按照“四舍六入五凑偶”修约：
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1. 不确定度 u 保留一位有效数字
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2. 平均值/结果末位与 u 对齐
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"""
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if uncertainty <= 0:
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return str(value), "0"
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d_val = Decimal(str(value))
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d_unc = Decimal(str(uncertainty))
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u_float = float(d_unc)
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first_digit_pos = math.floor(math.log10(u_float))
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prec = Decimal('1e' + str(first_digit_pos))
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u_final = d_unc.quantize(prec, rounding=ROUND_HALF_EVEN)
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val_final = d_val.quantize(prec, rounding=ROUND_HALF_EVEN)
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return val_final, u_final
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def parse_angle_to_minutes(s):
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"""
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将输入解析为内部统一单位：分钟（Decimal）。
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支持格式：
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1. 'D.M' -> D度M分 (例如 '120.15' -> 120*60 + 15 = 7215分)
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2. 'D' (纯数字无点) -> D度 (例如 '120' -> 120*60 = 7200分)
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3. 'D.M.S' -> D度M分S秒 (例如 '120.15.30' -> 7215.5分)
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"""
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parts = s.split('.')
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if len(parts) == 1:
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return Decimal(parts[0]) * 60
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elif len(parts) == 2:
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return Decimal(parts[0]) * 60 + Decimal(parts[1])
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else:
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res = Decimal(parts[0]) * 60 + Decimal(parts[1])
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if len(parts) >= 3:
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res += Decimal(parts[2]) / 60
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return res
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def format_minutes_as_angle(minutes, prec=None):
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"""
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将总分钟数转换为 D° M' 格式，支持保持对齐精度。
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"""
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neg = minutes < 0
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minutes = abs(minutes)
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d = int(minutes // 60)
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m = minutes % 60
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if m >= 60:
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d += 1
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m -= 60
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if prec is not None and prec < 1:
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places = abs(prec.as_tuple().exponent)
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m_str = format(m, f'.{places}f')
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else:
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if m == int(m):
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m_str = str(int(m))
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else:
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m_str = format(m, 'f').rstrip('0').rstrip('.')
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return f"{'-' if neg else ''}{d}°{m_str}'"
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