Introduction to Python drawing learning tutorial

This article describes the basic method of drawing in Python. Share it for your reference, as follows:

Python: Draw charts using matplotlib

Python's method of drawing charts has a powerful class library matplotlib, which can produce high-quality 2D and 3D graphics. Record it first and learn it slowly later.

matplotlib download and API manual address:/projects/matplotlib/files/matplotlib/

Mathematics library numpy download and API manual address:/Download

Several drawing examples, from the API manual:

1. The simplest picture:

Code:

#!/usr/bin/env python
import  as plt
([10, 20, 30])
('tiems')
('numbers')
()

2. Pie chart:

Code:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from pylab import *
# make a square figure and axes
figure(1, figsize=(6,6))
ax = axes([0.1, 0.1, 0.8, 0.8])
labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
fracs = [15,30,45, 10]
explode=(0, 0.05, 0, 0)
pie(fracs, explode=explode, labels=labels, autopct='%1.1f%%', shadow=True)
title('Raining Hogs and Dogs', bbox={'facecolor':'0.8', 'pad':5})
savefig('D:\\')
show()

3. Use numpy library functions:

Code:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import numpy as np
import  as plt
t = (0.0, 1.01, 0.01)
s = (2*2**t)
(t, s*(-5*t), 'r')
(True)
#Save it as PDF format, or save it as PNG and other graphics formats('D:\\')
()

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