2024-01-15 00:45:08 +08:00
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#!./env/bin/python
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from datetime import datetime, timedelta
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import matplotlib.pyplot as plt
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from pylab import mpl
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# 设置显示中文字体
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mpl.rcParams["font.sans-serif"] = ["SimHei"]
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# 初始化一个起始日期（这里假设是今天凌晨0点）
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2024-01-15 21:59:32 +08:00
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start_date = datetime.now().replace(hour=20, minute=21, second=0, microsecond=0)
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2024-01-15 00:45:08 +08:00
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with open('minicom.cap', 'r') as file:
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lines = file.readlines()
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times = []
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temperatures = []
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for line in lines:
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time_str, temp_str = line.strip().split('temp = ')
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time = start_date + timedelta(seconds=int(time_str.split(':')[2])) + \
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timedelta(minutes=int(time_str.split(':')[1])) + \
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timedelta(hours=int(time_str.split(':')[0]))
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temperature = float(temp_str)
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2024-07-07 19:02:36 +08:00
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if len(temperatures) > 0:
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pre_temp = temperatures[-1]
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else:
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pre_temp = temperature
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if pre_temp-0.5 < temperature < pre_temp+0.5:
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2024-01-15 21:59:32 +08:00
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times.append(time)
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temperatures.append(temperature)
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2024-01-15 00:45:08 +08:00
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# 确保时间序列是排序的
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times.sort()
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# 绘制折线图
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plt.plot(times, temperatures)
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plt.xlabel('时间')
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plt.ylabel('温度 (摄氏度)')
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plt.title('温度随时间变化图')
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plt.xticks(rotation=45) # 旋转x轴标签以更好地展示时间
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# 自动调整x轴刻度以显示日期时间格式
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plt.gcf().autofmt_xdate()
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# 显示图形
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plt.savefig("img.png")
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plt.show()
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