好吧,所以我在这里建议的是作弊和发明数据,但至少它使曲线看起来更像你(或你的主管)想要的。
x = [300, 700, 1000, 1500] # your original x
x2 = [300, 500, 700, 850, 1000, 1250, 1500] # add points in between
# interpolate your data for the new points in x2
p1 = np.interp(x2,x,y1)
p2 = np.interp(x2,x,y2)
p3 = np.interp(x2,x,y3)
p4 = np.interp(x2,x,y4)
# cubic spline interpolation on xp, so it looks smooth
p1 = scipy.interpolate.CubicSpline(x2,p1)
p2 = scipy.interpolate.CubicSpline(x2,p2)
p3 = scipy.interpolate.CubicSpline(x2,p3)
p4 = scipy.interpolate.CubicSpline(x2,p4)
它看起来是这样的:
如果您对此外观不满意,可以尝试不同的值x2
.
EDIT:
这是生成该图的完整代码:
import numpy as np
from scipy.interpolate import CubicSpline
import matplotlib.pyplot as plt
x = [300, 700, 1000, 1500] # your orginial x
x2 = [300, 500, 700, 850, 1000, 1250, 1500] # add points in between
xp = np.linspace(300,1500,100,endpoint=True) # your x-axis for smooth curve plot
# your orginal data
y1 = [-1.0055394199673442, -0.11221578805214968, -1.502661406039569, 1.0216939169819494]
y2 = [-1.0200777228890747, -0.6951505674297687, -2.832988761335546, 1.0253075071285915]
y3 = [2.0502387421569463, -1.3363305947335058, 0.2893545237634795, 0.8692051683379767]
y4 = [1.8676528391899183, -1.7554177636905024, 0.2364994810496486, 0.9811885784744991]
for yi in [y1,y2,y3,y4]:
# Piecewise linear interpolation of data y over the points x2
y_interpolated_over_x2 = np.interp(x2,x,yi)
# Make a cubic spline from the manipulated data
y_cubic_spline = CubicSpline(x2, y_interpolated_over_x2)
# The smooth curve is the cubic spline evaluated at points xp
y_smooth = y_cubic_spline(xp)
plt.plot(xp, y_smooth) # plot the smooth curve
plt.scatter(x, yi) # plot the original data points
plt.show()