在matplotlib中選擇x值的比例

Question

我正在嘗試使用matplotlib創建直方圖。 我的X值加倍，從2到2048.當我在直方圖上繪制圖形時，在開始時有一堆值彼此相鄰，然后隨着值的增加而展開。 因為我知道我之間不會有值，如何將圖形更改為兩倍的倍數？ 我試過from matplotlib.pyplot import xticks但只改變顯示的內容。

import matplotlib
from numpy.random import randn
import matplotlib.pyplot as plt
from matplotlib.ticker import FuncFormatter
import random
from matplotlib.pyplot import xticks


def to_percent(y, position):
    # Ignore the passed in position. This has the effect of scaling the default
    # tick locations.
    s = str(100 * y)

    # The percent symbol needs escaping in latex
    if matplotlib.rcParams['text.usetex'] is True:
        return s + r'$\%$'
    else:
        return s + '%'
z = [2, 8, 16, 32, 64, 128, 256, 512, 1024, 2048]
x = [z[random.randint(0, 6)] for i in range(100)]
xticks(z)
plt.xscale('log')
# Make a normed histogram. It'll be multiplied by 100 later.
plt.hist(x, bins=50, normed=True)


# Create the formatter using the function to_percent. This multiplies all the
# default labels by 100, making them all percentages
formatter = FuncFormatter(to_percent)

# Set the formatter
plt.gca().yaxis.set_major_formatter(formatter)

plt.show()

Answer 1

您可以只繪制日志值和格式化程序的日志。 這是更簡單...

plt.hist(np.log(x), bins=50, normed=True)
plt.xticks(np.log(z), z)

如果您願意，也可以使用base 2日志...