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import matplotlib.pyplot as plt
import numpy as np
n = 5000 # number of data points to plot
start = 0.0 # start time, s
end = 4500.0 # ending time, s
g = -8.87 # acceleration, m*s**-2
t = np.linspace(start,end,n+1,dtype=np.float(64) # time, s
y = np.zeros(n+1) # height, m
v = np.zeros(n+1) # velocity, m*s**-1
y[ 0 ] = 250000 # initial condition, m
v[ 0 ]=0
bounce=0.0
for i in range(1,n+1):
v[ i ] = v[ i-1 ] + g*(t[ i ]-t[ i-1 ])
y[ i ] = y[ i-1 ] + v[ i-1 ] * (t[ i ]-t[ i-1 ])
if y[ i ] <= 0:
bounce+=1
v[ i ] = -0.9*v[ i-1 ]
y[ i ]=0
plt.plot(t,y)
plt.show()
爲什麼我對y = np.zeros(n + 1)有無效語法? 我要計算球以1小時15分多少時間從反彈250公里高度,每一次失去速度的10%,它反彈彈跳球無效語法爲什麼是這樣的?
以上 – 0TTT0
在Python,只要你上一條線,顯然是正確的神祕語法錯誤的行右括號,回頭一兩行,因爲你幾乎可以肯定失蹤一個右括號,括號或其他分隔符。 –