1
此代码从Google财经中获得一条直线的坐标，并将第三个点放置在相同的距离上。有很多回溯ValueError：ordinal必须大于等于1
dt = datetime.datetime.fromordinal(ix).replace(tzinfo=UTC)
ValueError: ordinal must be >= 1
发生
import datetime as dt
from datetime import timedelta as td
import matplotlib.pyplot as plt
from matplotlib import style
import pandas as pd
import pandas_datareader.data as web
import numpy as np
start = dt.datetime(2017, 7, 1)
end = dt.datetime(2017, 3, 1)
# retrieving data from google
df = web.DataReader('TSLA', 'google', start,)
Dates = df.index
Highs = df['High'] # Getting only the values from the 'High' Column.
Highest_high = np.amax(Highs) # returns the Highest value
for i, h in enumerate(Highs):
if h == Highest_high :
Highests_index = i
#Highests_index = Highs.argmax() # returns the index of Highest value
Highest_high_2 = sorted(Highs)[-2]
for i, j in enumerate(Highs):
if j == Highest_high_2 :
Highests_index_2 = i
#================Problem Maybe starting from here========================
x = [Highests_index, Highests_index_2]
y = [Highest_high, Highest_high_2]
coefficients = np.polyfit(x, y, 1)
polynomial = np.poly1d(coefficients)
# the np.linspace lets you set number of data points, line length.
x_axis = np.linspace(3,Highests_index_2 + 1, 3)
y_axis = polynomial(x_axis)
plt.plot(x_axis, y_axis)
plt.plot(x[0], y[0], 'go')
plt.plot(x[1], y[1], 'go')
plt.plot(Dates, Highs)
plt.grid('on')
plt.show()
以下错误上面的代码效果很好，当我刚绘制的数值，而无需使用datetime和大熊猫。我认为这个问题可能在datetime或matplotlib中。
我知道这个问题可能看起来是重复的，但我无法将我的问题与其他任何解决方案联系在一起。