我附上我的txt文件,图形和代码。你能告诉我在这段代码中要修改什么吗,或者为什么这第三条直线会出现在我的图中,因为我只需要两条曲线。在其他软件如xmgrace中,它只显示两条曲线。
import numpy as np
import matplotlib.pyplot as plt
deformation, potential = np.loadtxt("poten-Rf259.txt", unpack=True)
plt.subplot(1,3,1)
plt.plot(deformation, potential, linewidth=1, color='b')
plt.xlabel("$deformation$")
plt.ylabel("potential")
plt.yscale("log")
plt.show()
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2条答案
按热度按时间plupiseo1#
这只是因为你是为一组x,y数据绘制一条线,而不是两条线;因此,一条线必须连接所有点。试试看
并查看应该显示的数据。由于这些是数据点,无论如何,这是更合适的。
dkqlctbz2#
'poten-Rf259.txt'
包含两个单独的数据集,由一个空行分隔,而plt.plot
通过一条线连接所有的点,因为没有办法识别数据是分开的。numpy.loadtxt
有skiprows
,但是这个参数似乎没有很好的实现来跳过行的“部分”。pandas.read_csv
具有skiprows
,其将接受行的范围(例如,skiprows=range(151, 302)
)pandas
使用matplotlib
作为默认绘图后端,numpy
是一个依赖项。*在
python 3.11.3
、pandas 2.0.1
、matplotlib 3.7.1
、seaborn 0.12.2
中测试df1
和df2
也可以绘制在同一图上。使用
seaborn
绘图seaborn
是matplotlib
的高级API,可以轻松地从长格式