Drawing of graphics in python-Python Tutorial-php.cn

Drawing of graphics in python

零到壹度

Release： 2018-04-19 15:42:39

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The example in this article describes the drawing of graphics in Python. Share it with everyone for your reference, the details are as follows:

1. Add data labels to the graph

plt.plot(datat.index,datat)
plt.xlabel(&#39;index&#39;, fontsize=15)
plt.legend([&#39;t_bottom&#39;,&#39;t_top&#39;],loc = &#39;upper_right&#39;,fontsize = 10)
plt.show()

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2. Set the labels On the far right

plt.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)

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3, a box appears when displaying Chinese fonts

# coding: UTF-8
import matplotlib.pyplot as plt
plt.rcParams[&#39;font.sans-serif&#39;]=[&#39;SimHei&#39;] #用来正常显示中文标签
plt.rcParams[&#39;axes.unicode_minus&#39;]=False #用来正常显示负号#有中文出现的情况，需要u&#39;内容

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4. Draw a heat map

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import seaborn as sns
d ={&#39;1&#39;:[0.87,0.95],&#39;2&#39;:[0.86,0.91],&#39;3&#39;:[0.86,0.93],&#39;4&#39;:[0.86,0.92],&#39;5&#39;:[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()

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5. Draw a scatter plot and overlap multiple graphs

import matplotlib.pyplot as plt
import seaborn as sns
color = sns.color_palette()
sns.set_style(&#39;darkgrid&#39;)
%matplotlib inline
plt.rcParams[&#39;font.sans-serif&#39;]=[&#39;SimHei&#39;] #用来正常显示中文标签
plt.rcParams[&#39;axes.unicode_minus&#39;]=False #用来正常显示负号#有中文出现的情况，需要u&#39;内容&#39;

plt.figure(figsize=[9,6])
plt.plot(datat.index,datat_.t_bottom,color = &#39;r&#39;)
plt.plot(datat.index,datat_.t_top,color = &#39;c&#39;)
plt.scatter(datat.index,datat_.bottom,marker=&#39;.&#39;,c=&#39;g&#39;)
plt.scatter(datat.index,datat_.top,marker=&#39;.&#39;,c=&#39;b&#39;)
plt.legend((&#39;t_bottom&#39;,&#39;t_top&#39;,&#39;noise_bottom&#39;,&#39;noise_top&#39;),loc = &#39;upper right&#39;,fontsize=15)
plt.xlabel(&#39;index&#39;, fontsize=15)
plt.ylabel(u&#39;温度&#39;, fontsize=15)
#plt.legend([&#39;t_bottom&#39;,&#39;t_top&#39;],loc = &#39;upper_right&#39;,fontsize = 10)
plt.show()

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##6. Drawing color

color =

greenredcyan##'w'

character	color
`<span class="pre">'b'</span>`	blue
`##'g'<span class="pre"></span>`
`'r'<span class="pre"></span>`
`'c'<span class="pre"></span>`
##'m'`<span class="pre"></span>`magenta
'y'`<span class="pre"></span>`yellow
'k'`<span class="pre"></span>`black
`<span class="pre"></span>white`

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