python 绘制柱状图label_python 绘制直方图，并且旋转label标签

ax.set_xticklabels(labels,rotation=120) # 旋转标签，避免标签重叠覆盖

label翻转的实现，在输出到页面之前，使用：fig.autofmt_xdate() 或者 ax.set_xticklabels(group_labels, rotation=120)    rotation就是翻转的角度

# -*- coding: gbk -*-

import numpy as np

import matplotlib.pyplot as plt

import matplotlib as mpl

def draw_pie(labels,quants):

# make a square figure

plt.figure(1, figsize=(6,6))

# For China, make the piece explode a bit

expl = [0,0.1,0,0,0,0,0,0,0,0]

# Colors used. Recycle if not enough.

colors  = ["blue","red","coral","green","yellow","orange"]

# Pie Plot

# autopct: format of "percent" string;

plt.pie(quants, explode=expl, colors=colors, labels=labels, autopct='%1.1f%%',pctdistance=0.8, shadow=True)

plt.title('Top 10 GDP Countries', bbox={'facecolor':'0.8', 'pad':5})

plt.show()

def draw_bar(labels,quants):

width = 0.4

ind = np.linspace(0.5,9.5,10)

# make a square figure

fig = plt.figure(1)

ax  = fig.add_subplot(111)

# Bar Plot

ax.bar(ind-width/2,quants,width,color='green')

# Set the ticks on x-axis

ax.set_xticks(ind)

ax.set_xticklabels(labels,rotation=120) # 旋转标签，避免标签重叠覆盖

# labels

ax.set_xlabel('Country')

ax.set_ylabel