具有序列的数组元素

Question

想出图x_values_edited 求速。我有这个错误：

ValueError: setting an array element with a sequence

plt.plot(x_values_edited, speed, '.' )

我的代码和输入在这里：

x_values_Edited:

[datetime.datetime(2015, 1, 1, 0, 0), datetime.datetime(2015, 1, 1, 0, 1), datetime.datetime(2015, 1, 1, 0, 2), datetime.datetime(2015, 1, 1, 0, 3), datetime.datetime(2015, 1, 1, 0, 4), datetime.datetime(2015, 1 , 1, 0, 5), datetime.datetime(2015, 1, 1, 0, 6), datetime.datetime(2015, 1, 1, 0, 7), datetime.datetime(2015,

速度：

[[58.5, 97.0, 56.0, 87.5, 95.0, 100.0, 104.0, 98.5, 101.0, 98.5, 86.5, 90.0, 97.5, 16.5, 103.0, 98.0, 48.0, 98.5, 96.0, 93.5, 98.5, 96.5, 93.5, 9 ，108.5，22.0，92.5，84.5，103.5，86.5，103.0，96.5，91.5，91.5，101.5，86.0]，[99.5，101.0，96.5，94.5，94.5，94.5，92.0 , 89.0, 102.5, 89.0, 104.5, 102.0, 107.0, 96.5, 97.5, 97.5, 93.0, 95.0, 88.5, 89.0, 101.0, 97.0, 98.5, ]]

Answer 1

这是一个工作示例。我不得不生成时间，因为你没有在你的问题中包含完整的输入：

from matplotlib.pyplot import plot, show
from datetime import datetime, timedelta

def date_range(stop, start, step=1):
    """
    Time generator
    :param stop: Stop time
    :type stop: Start time
    :param start: Steps based upon which the time is to be calculated.
    :type start: datetime.datetime()
    :param step: datetime.datetime()
    :type step: int, float
    """
    delta_date = stop - start
    numerator = 0

    while numerator < delta_date.seconds:
        yield start + timedelta(0, numerator)
        numerator += step

speed = [
    58.5, 97.0, 56.0, 87.5, 95.0, 100.0, 104.0, 
    98.5, 101.0, 98.5, 86.5, 90.0, 97.5, 16.5, 
    103.0, 98.0, 48.0, 98.5, 93.5, 99.0, 101.5, 
    86.5, 108.5, 22.0, 92.5, 84.5, 103.5, 86.5, 
    103.0, 96.5, 91.5, 101.5, 86.0
]


speed_len = len(speed)

# Hypothetical start time
date_start = datetime(2014, 3, 15, 0)
# and finish time
date_end = datetime(2014, 3, 15, 0, int(speed_len/60), speed_len%60)

# Generate a time list: 1 second per item in |speed|
x_values_edited = [val for val in date_range(stop=date_end, start=date_start, step=1)]

# Scatter plot
plot(x_values_edited, speed, '.')

# Display the plot
show()

显示这个：

Answer 2

这是一个快速修复方法。

从 matplotlib.pyplot 导入散点图、显示、xlim、ylim

from matplotlib.pyplot import scatter, show, xlim, ylim

for index, item in enumerate(speed):
    scatter([times[index]]*len(item), item, marker='.')

xlim(min(times), max(times))
ylim(min(min(speed)), max(max(speed)))
show()

产生：

抱歉，拖了很久。我必须在地下做！

具有序列的数组元素

Array element with a sequence

python

arrays

plot

sequence