Question

请，以下是我的代码以绘制数据框。 The DataFrame to plot

上图是要绘制的数据框的图片。

下面是代码：

fig = plt.figure(figsize = (16,8))
ax = fig.add_subplot(1,1,1) 
ax.set_xlabel('Principal Component 1', fontsize = 10)
ax.set_ylabel('Principal Component 2', fontsize = 10)
ax.set_title('2 component PCA', fontsize = 15)

targets = ['Mkt-RF', 'SMB', 'HML', 'RMW', 'CMA', 'RF']
colors = ['r', 'g', 'b', 'purple', 'black', 'yellow']

for index2, color in zip(targets, colors):
    ax.scatter(finalDF.loc[finalDF.Target == index2, 'Principal_Component_1'], finalDf.loc[finalDF.Target == index2, 'Principal_Component_2'], c = color, s=50)
ax.legend(indexes)
ax.grid()

错误消息显示为：

<ipython-input-19-5ee92622d5a5> in <module>
      9 
     10 for index2, color in zip(targets, colors):
---> 11     ax.scatter(finalDF.loc[finalDF.Target == index2, 'Principal_Component_1'], finalDf.loc[finalDF.Target == index2, 'Principal_Component_2'], c = color)
     12 ax.legend(indexes)
     13 ax.grid()

NameError: name 'finalDf' is not defined

团队，请协助。我整天都在看这个。

Answer 1

在给定代码的任何地方都没有定义名为def equations(p): global gam01,gam12,gam02,x0,y0,z0,x1,y1,z1 x,y,z = p # Note (zk-z) where z = 0 because the transmitter should not change # dramatically in elevation with reference to building heights. return ( gam01*((x0-x)**2+(y0-y)**2+(z0-0)**2)-(x1-x)**2-(y1-y)**2-(z1-0)**2, gam12*((x1-x)**2+(y1-y)**2+(z1-0)**2)-(x2-x)**2-(y2-y)**2-(z2-0)**2, gam02*((x2-x)**2+(y2-y)**2+(z2-0)**2)-(x0-x)**2-(y0-y)**2-(z0-0)**2 ) gam01 = 1.0 # power ratio between receivers 0 and 1. gam12 = 1.0 # power ratio between receivers 1 and 2. gam02 = 1.0 # power ratio between receivers 0 and 2. x0,y0,z0 = 0.0, 100.0, 5.0 # location (x,y) and height (z) of receiver 0. x1,y1,z1 = 200.0, 0.0, 10.5 # location (x,y) and height (z) of receiver 1. x2,y2,z2 = 0.0, -100.0, 15.0 # location (x,y) and height (z) of receiver 2. from scipy.optimize import fsolve %matplotlib inline import numpy as np from mpl_toolkits.mplot3d import Axes3D import matplotlib.pyplot as plt x,y,z = fsolve(equations, (1.0, 1.0, 1.0)) # solve with initial guess of (1,1,1). fig = plt.figure() ax = plt.axes(projection = '3d') ax.plot3D([x0,x1,x2], [y0,y1,y2], [z0,z1,z2], 'bo', markersize=8.0) ax.plot3D([x], [y], [z], 'rx', markersize = 8.0) plt.show()的变量。这就是错误消息的意思。

NameError：变量未定义

1 个答案: