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Python visualization library Matplotlib drawing entry Comments
python school that used
This morning saw the first chapter of this book, the book when it comes to how to use matplotlib to draw pictures, write books here put me in accordance with the code, knock again, and my understanding of this knowledge Talking point
man of few words said the Code
import matplotlib.pyplot as plt
import matplotlib as mpl
plt.plot([-2,2,3,4,5],label=u'第一条曲线')
plt.plot([3,4,5,8,9],label=u'第二条曲线')
plt.legend()
plt.grid(True)
plt.axis([0,5,-3,9])
plt.xlabel('X轴')
plt.ylabel('Y轴')
plt.title('matplotlib演示图')
plt.show()
plt.savefig('plot123.png')
Impression that this library is like the beginning of the numerical calculation using MATLAB course so much like, so to see Baidu, really similar.
1. First matplotlib need to import this module
2. plot () function creates two curves
designated x and Y
plt.plot (x, Y)
default parameters, x is-N. 1 ~ 0
plt.plot (Y)
3.legend () specifies the legend
4.grid () display grid
5.axis () the specified maximum and minimum coordinate axis
xlabel, ylabel, titile show the x and y axes and display the content title
6.show display image
7. save image
The results show
Here there is a problem because the Chinese show, so I put the code inside the Chinese into the English
Finally, I hope to continue the follow-up can also understand the application of the library, insist on reading, learning python adhere to it!
