我对这门学科和python的东西还很陌生，我有一段代码，乍一看很好，运行起来也没有问题，但它并没有给我给予我期望的结果。
import pandas as pd
import matplotlib.pyplot as plt
# Step 1: Read the .asc file, ignoring the header and using varying spaces as separators
file_path = 'StartupElektroMode.asc'
data = []
try:
with open(file_path, 'r') as file:
lines = file.readlines()
except FileNotFoundError:
print(f"Error: The file'{file_path}' was not found")
timestamps = []
voltage_data = []
current_data = []
for line in lines[6:]:
parts = line.split()
if len(parts) >= 3:
timestamp = parts[0]
can_id = parts[2]
voltage_hex = None
current_hex = None
if can_id == '1E3' and len(parts) > 12:
voltage_hex = parts[13]
elif can_id == '4E3' and len(parts) > 13:
current_hex = parts[12]
# Step 2: Convert the hex values to decimal
for item in data:
if voltage_hex is not None:
first_digit = int(voltage_hex[0], 16)
second_digit = int(voltage_hex[1], 16)
voltage = (first_digit * 256 + second_digit) * 0.25
voltage_data.append(voltage)
if current_hex is not None:
first_digit = int(current_hex[0], 16)
second_digit = int(current_hex[1], 16)
current = (first_digit * 256 + second_digit) * 0.25
current_data.append(current)
data = {'Time': timestamps, 'Voltage': voltage_data, 'Current': current_data}
# Step 3: Create Pandas DataFrame
df = pd.DataFrame(data)
# Step 4: Plot Voltage and Current over time
plt.figure(figsize=(12, 6))
plt.plot(timestamps, voltage_data, label='Voltage (1E3)')
plt.title('Voltage Over Time')
plt.xlabel('Time')
plt.ylabel('Voltage (V)')
plt.legend()
plt.grid()
plt.plot(timestamps, current_data, label='Current (4E3)')
plt.title('Current Over Time')
plt.xlabel('Time')
plt.ylabel('Current (A)')
plt.legend()
plt.grid()
plt.tight_layout()
plt.show()
file.close()字符串
这里的文件的一部分，我试图读取
0.028121 1 CFF4912x Rx d 8 00 00 03 00 11 00 00 00 Length = 280152 BitCount = 144 ID = 218056978x
0.029376 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.029492 1 206 Rx d 1 04 Length = 107914 BitCount = 58 ID = 518
0.031802 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.031918 1 206 Rx d 1 04 Length = 107914 BitCount = 58 ID = 518
0.034060 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239683 BitCount = 124 ID = 1302
0.034176 1 206 Rx d 1 04 Length = 107929 BitCount = 58 ID = 518
0.036204 1 1E3 Rx d 8 01 59 00 00 00 00 1A 05 Length = 235910 BitCount = 122 ID = 483
0.036456 1 100 Rx d 8 00 00 00 00 00 00 00 08 Length = 243683 BitCount = 126 ID = 256
0.036703 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.036819 1 206 Rx d 1 04 Length = 107680 BitCount = 58 ID = 518
0.037249 1 2E3 Rx d 8 C4 C3 00 64 19 15 01 01 Length = 221668 BitCount = 115 ID = 739
0.038204 1 3E3 Rx d 8 68 01 38 04 03 00 00 00 Length = 235910 BitCount = 122 ID = 995
0.038885 1 144 Rx d 8 00 00 00 00 00 00 01 00 Length = 241668 BitCount = 125 ID = 324
0.039133 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.039249 1 206 Rx d 1 04 Length = 107914 BitCount = 58 ID = 518
0.039487 1 4E3 Rx d 8 1E 00 8C 00 00 F8 FF 00 Length = 229910 BitCount = 119 ID = 1251
0.041397 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.041513 1 206 Rx d 1 04 Length = 107914 BitCount = 58 ID = 518
0.043613 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.043729 1 206 Rx d 1 04 Length = 107929 BitCount = 58 ID = 518
0.045825 1 516 Rx d 8 00 00 00 00 00 00 00 00 Length = 239668 BitCount = 124 ID = 1302
0.045941 1 206 Rx d 1 04 Length = 107914 BitCount = 58 ID = 518
0.046193 1 100 Rx d 8 00 00 00 00 00 00 00 08 Length = 243668 BitCount = 126 ID = 256
0.047126 1 CF00400x Rx d 8 F8 7D 7D 00 00 00 F0 7D Length = 280167 BitCount = 144 ID = 217056256x型
有什么建议我可以做什么或我的问题可能在哪里
1条答案
按热度按时间wmomyfyw1#
您的电压和电流数据是在不同的帧中接收的，因此总是具有不同的时间戳。由于最终会得到很多NaN值，因此使用一个帧不太适合绘制数据。
构建与电压和电流并行的时间戳列表，并将它们绘制在一起（在一个或不同的图上）。另外，似乎你的十六进制转换是错误的（或者电流/电压应该分布在两个字节上？）我稍微修改了你的示例，使其具有多个数据点：
字符串
输出量：
x1c 0d1x的数据