源码网商城,靠谱的源码在线交易网站 我的订单 购物车 帮助

源码网商城

python绘制条形图方法代码详解

  • 时间:2022-02-16 01:08 编辑: 来源: 阅读:
  • 扫一扫,手机访问
摘要:python绘制条形图方法代码详解
1.首先要绘制一个简单的条形图
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import mlab
from matplotlib import rcParams
fig1 = plt.figure(2)
rects =plt.bar(left = (0.2,1),height = (1,0.5),width = 0.2,align="center",yerr=0.000001)
plt.title('Pe')
plt.show()
[img]http://files.jb51.net/file_images/article/201712/20171219142556690.png?2017111914268[/img] 1.1上面中rects=plt.bar(left=(0.2,1),height=(1,0.5),width=0.2,align=”center”,yerr=0.000001)这句代码是最重要的,其中left表示直方图的开始的位置(也就是最左边的地方),height是指直方图的高度,当直方图太粗时,可以通过width来定义直方图的宽度,注意多个直方图要用元组,yerr这个参数是防止直方图触顶。 2.增加直方图脚注
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import mlab
from matplotlib import rcParams
fig1 = plt.figure(2)
rects =plt.bar(left = (0.2,1),height = (1,0.5),width = 0.2,align="center",yerr=0.000001)
plt.title('Pe')
plt.xticks((0.2,1),('frst','second'))
plt.show()
[img]http://files.jb51.net/file_images/article/201712/20171219142649629.png?20171119142659[/img] 3.条形图上显示具体的数字(自动编号)
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import mlab
from matplotlib import rcParams
fig1 = plt.figure(2)
rects =plt.bar(left = (0.2,1),height = (1,0.5),width = 0.2,align="center",yerr=0.000001)
plt.title('Pe')
def autolabel(rects):
  for rect in rects:
    height = rect.get_height()
    plt.text(rect.get_x()+rect.get_width()/2., 1.03*height, '%s' % float(height))
autolabel(rects)
plt.xticks((0.2,1),('frst','second'))
plt.show()
[img]http://files.jb51.net/file_images/article/201712/20171219142750611.png?2017111914283[/img] 4.改变颜色
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import mlab
from matplotlib import rcParams
fig1 = plt.figure(2)
rects =plt.bar(left = (0.2,1),height = (1,0.5),color=('r','g'),width = 0.2,align="center",yerr=0.000001)
plt.title('Pe')
def autolabel(rects):
  for rect in rects:
    height = rect.get_height()
    plt.text(rect.get_x()+rect.get_width()/2., 1.03*height, '%s' % float(height))
autolabel(rects)
plt.xticks((0.2,1),('frst','second'))
plt.show()
[img]http://files.jb51.net/file_images/article/201712/20171219142841753.png?20171119142852[/img] 5.添加图注
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import mlab
from matplotlib import rcParams
fig1 = plt.figure(2)
rects1 =plt.bar(left = (0.2),height = (0.5),color=('g'),label=(('no1')),width = 0.2,align="center",yerr=0.000001)
rects2 =plt.bar(left = (1),height = (1),color=('r'),label=(('no2')),width = 0.2,align="center",yerr=0.000001)
plt.legend()
plt.xticks((0.2,1),('frst','second'))
plt.title('Pe')

def autolabel(rects):
  for rect in rects:
    height = rect.get_height()
    plt.text(rect.get_x()+rect.get_width()/2., 1.03*height, '%s' % float(height))
autolabel(rects1)
autolabel(rects2)
plt.show()
[img]http://files.jb51.net/file_images/article/201712/20171219142929984.png?20171119142939[/img] 6大家根据自己的需要自己来绘制自己的条形图 下面回答网友提问,如何画在条形图上垂直显示数据: 下面这个函数是用来垂直显示的,其中设置角度就可以以任意方式来显示。
def autolabel(rects,Num=1.12,rotation1=90,NN=1):
    for rect in rects:
      height = rect.get_height()
      plt.text(rect.get_x()-0.04+rect.get_width()/2., Num*height, '%s' % float(height*NN),rotation=rotation1)
调用方式如下
rects1 =plt.bar(left = (0.05),height = (Pe_FH),color=('b'),label=('FHMM'),width = 0.1,align="center",yerr=0.000001);
autolabel(rects1,1.09);
下面是效果图 [img]http://files.jb51.net/file_images/article/201712/20171219143127837.jpg?20171119143139[/img] [b]总结[/b] 以上就是本文关于python绘制条形图方法代码详解的全部内容,希望对大家有所帮助。感兴趣的朋友可以继续参考本站: [url=http://www.1sucai.cn/article/128211.htm][b]python绘制铅球的运行轨迹代码分享[/b][/url] [url=http://www.1sucai.cn/article/130020.htm][b]用Pygal绘制直方图代码示例[/b][/url] [url=http://www.1sucai.cn/article/130029.htm][b]Python中pygal绘制雷达图代码分享[/b][/url] 如有不足之处,欢迎留言指出。感谢朋友们对本站的支持!
  • 全部评论(0)
联系客服
客服电话:
400-000-3129
微信版

扫一扫进微信版
返回顶部