Python TypeError:通过matplotlib动画在x轴上显示日期时间

我已经做了一天半了，我想是时候求助了。以下代码给出了错误：

TypeError:

float（）

参数必须是字符串或数字，而不是

'datetime.datetime'

我试图通过动画函数将函数frames1中生成的

datetime

变量放在x轴上

代码：

我尝试了以下解决方案：

目前还没有积极的结果

---

我非常感谢您提前查看此问题。

不确定您首先为什么要将

1

附加到数组中。我想你是说

# Creating data variables
x = []
y = []
x.append(datetime.datetime.now())
y.append(1)

那么在生成器函数中，有很多我不明白的地方。在我看来，您似乎可以省去大部分来回转换，直接使用

now（）

def frames1():
    # Generating time variable
    target_time = datetime.datetime.now()

    while True:
        # Add new time + 60 seconds
        target_time = target_time + datetime.timedelta(seconds=60)
        x = target_time
        y = random.randint(250,450)/10
        yield (x,y)  
        time.sleep(random.randint(2,5))

但是，您可以将轴的格式设置为显示时间而不是数字。在

init

函数中，您可以添加

line.axes.xaxis.set_major_formatter(mdates.DateFormatter("%H:%M:%S"))

将

matplotlib.dates

作为

mdates

导入的位置

行

imin=min（max（0，i-win），len（x-win）

似乎没有多大意义，为什么不单独使用

max（0，i-win）

因此，总的来说，工作版本可能如下所示：

import random
import time
from matplotlib import pyplot as plt
import matplotlib.dates as mdates
from matplotlib import animation
import datetime

# Plot parameters
fig, ax = plt.subplots()
line, = ax.plot([], [], 'k-', label = 'ABNA: Price', color = 'blue')
legend = ax.legend(loc='upper right',frameon=False)
plt.setp(legend.get_texts(), color='grey')
ax.margins(0.05)
ax.grid(True, which='both', color = 'grey')

# Creating data variables
x = [datetime.datetime.now()]
y = [1]

def init():
    line.set_data(x[:1],y[:1])
    line.axes.xaxis.set_major_formatter(mdates.DateFormatter("%H:%M:%S"))
    return line,

def animate(args):
    # Args are the incoming value that are animated    
    animate.counter += 1
    i = animate.counter
    win = 60
    imin = max(0, i - win)
    x.append(args[0])
    y.append(args[1])

    xdata = x[imin:i]
    ydata = y[imin:i]

    line.set_data(xdata, ydata)
    line.set_color("red")

    plt.title('ABNA CALCULATIONS', color = 'grey')
    plt.ylabel("Price", color ='grey')
    plt.xlabel("Time", color = 'grey')

    ax.set_facecolor('black')
    ax.xaxis.label.set_color('grey')
    ax.tick_params(axis='x', colors='grey')
    ax.yaxis.label.set_color('grey')
    ax.tick_params(axis='y', colors='grey')

    ax.relim()
    ax.autoscale()

    return line,

animate.counter = 0

def frames1():
    # Generating time variable
    target_time = datetime.datetime.now()
    while True:
        # Add new time + 60 seconds
        target_time = target_time + datetime.timedelta(seconds=60)
        x = target_time
        y = random.randint(250,450)/10
        yield (x,y)  
        time.sleep(random.randint(2,5))

anim = animation.FuncAnimation(fig, animate,init_func=init,frames=frames1)

plt.show()

import random
import time
from matplotlib import pyplot as plt
import matplotlib.dates as mdates
from matplotlib import animation
import datetime

# Plot parameters
fig, ax = plt.subplots()
line, = ax.plot([], [], 'k-', label = 'ABNA: Price', color = 'blue')
legend = ax.legend(loc='upper right',frameon=False)
plt.setp(legend.get_texts(), color='grey')
ax.margins(0.05)
ax.grid(True, which='both', color = 'grey')

# Creating data variables
x = [datetime.datetime.now()]
y = [1]

def init():
    line.set_data(x[:1],y[:1])
    line.axes.xaxis.set_major_formatter(mdates.DateFormatter("%H:%M:%S"))
    return line,

def animate(args):
    # Args are the incoming value that are animated    
    animate.counter += 1
    i = animate.counter
    win = 60
    imin = max(0, i - win)
    x.append(args[0])
    y.append(args[1])

    xdata = x[imin:i]
    ydata = y[imin:i]

    line.set_data(xdata, ydata)
    line.set_color("red")

    plt.title('ABNA CALCULATIONS', color = 'grey')
    plt.ylabel("Price", color ='grey')
    plt.xlabel("Time", color = 'grey')

    ax.set_facecolor('black')
    ax.xaxis.label.set_color('grey')
    ax.tick_params(axis='x', colors='grey')
    ax.yaxis.label.set_color('grey')
    ax.tick_params(axis='y', colors='grey')

    ax.relim()
    ax.autoscale()

    return line,

animate.counter = 0

def frames1():
    # Generating time variable
    target_time = datetime.datetime.now()
    while True:
        # Add new time + 60 seconds
        target_time = target_time + datetime.timedelta(seconds=60)
        x = target_time
        y = random.randint(250,450)/10
        yield (x,y)  
        time.sleep(random.randint(2,5))

anim = animation.FuncAnimation(fig, animate,init_func=init,frames=frames1)

plt.show()