Acquaintance matplotlib

matplotlib.pyplot AS PLT Import 
# pyplot first introduced into the module, and specify an alias PLT, so as not to repeatedly enter pyplot 
# pyplot module comprises a number of functions used to generate the graph 


'' ' 
data visualization to explore means is represented by visualizing data, he and data mining is closely related to, and data mining refers to the use code to explore the law and the associated data set 
of the most popular tools matplotlib, it is a mathematical graphics library, we will use it to create simple charts, such as line charts and scatter FIG 

linux installation matplotlib 
Contos: yum the install Python -Y-matplotlib 
RedHat: $ the sudo Python-APT-GET insstall matplotlib 


use pip mounted matplotlib 
pip the install --user matplolib 
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# draw simple line graph 
# squares = [1,4 , 9,16,25] 
# #plot () function is plotted in accordance with these numbers meaningful pattern 
# plt.plot (Squares) 
# # plt.show () open matplotlib viewer, and display graphics drawn 
# plt.show () 


# modify the label text and line thickness 
# Squares = [1,10,20,30,40,50] 
'' 
we provide input and output values, it does not need to make assumptions about the way to generate output worth 
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= input_values [1,2,3,4,5] 
Squares = [1,4,9,16,25] 
# linewidth parameter determines the plot (the thickness of the drawn line) 
plt.plot (input_values, Squares, linewidth. 5 = ) 

# set the chart title, and to coordinate axes labeled 
plt.title ( "Number The Square", 24-fontSize =) 

plt.xlabel ( "Value", fontSize = 14) 
#xlable (), ylable () let you able to each shaft is provided title 
plt.ylabel ( "Square of the Value", fontSize = 24) 

# set the size of tick marks, axis = "both" affects the x-axis and y-axis scale 
plt.tick_params (axis = "both" , labelsize = 14) 
plt.show ()