python之图形的绘制
本文实例讲述了python之图形的绘制。分享给大家供大家参考,具体如下:
1、给图形添加数据标签
plt.plot(datat.index,datat)plt.xlabel('index', fontsize=15)plt.legend(['t_bottom','t_top'],loc = 'upper_right',fontsize = 10)plt.show()
2、将标签置于最右边
plt.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)
3、显示中文字体出现方块
# coding: UTF-8import matplotlib.pyplot as pltplt.rcParams['font.sans-serif']=['SimHei'] #用来正常显示中文标签plt.rcParams['axes.unicode_minus']=False #用来正常显示负号#有中文出现的情况,需要u'内容
4、画热力图
import pandas as pdimport numpy as npimport matplotlib.pyplot as pltimport seaborn as snsd ={'1':[0.87,0.95],'2':[0.86,0.91],'3':[0.86,0.93],'4':[0.86,0.92],'5':[0.86,0.93]}df = pd.DataFrame(d,index = [2,1])df### annot是表示显示方块代表的数值出来 cmap颜色sns.heatmap(df,annot = True,cmap="YlGnBu")plt.show()
5、画散点图,并多个图重合在一起
import matplotlib.pyplot as pltimport seaborn as snscolor = sns.color_palette()sns.set_style('darkgrid')%matplotlib inlineplt.rcParams['font.sans-serif']=['SimHei'] #用来正常显示中文标签plt.rcParams['axes.unicode_minus']=False #用来正常显示负号#有中文出现的情况,需要u'内容'plt.figure(figsize=[9,6])plt.plot(datat.index,datat_.t_bottom,color = 'r')plt.plot(datat.index,datat_.t_top,color = 'c')plt.scatter(datat.index,datat_.bottom,marker='.',c='g')plt.scatter(datat.index,datat_.top,marker='.',c='b')plt.legend(('t_bottom','t_top','noise_bottom','noise_top'),loc = 'upper right',fontsize=15)plt.xlabel('index', fontsize=15)plt.ylabel(u'温度', fontsize=15)#plt.legend(['t_bottom','t_top'],loc = 'upper_right',fontsize = 10)plt.show()
6、画图颜色
color =
character | color |
---|---|
'b' | blue |
'g' | green |
'r' | red |
'c' | cyan |
'm' | magenta |
'y' | yellow |
'k' | black |
'w' | white |