Matolotlib绘图

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以下示例使用pylab和seaborn:

%pylab inline
import seaborn as sns

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线图：

x = linspace(-5,5,200)
plot(x,sin(x),label='$sin(x)$')
plot(x, cos(x), label='$cos(x)$')
plot(x, sin(x)*cos(x), '--',label='$sin(x)cos(x)$')
title('Matplotlib')
xlabel('$x$')
ylabel('$f(x)$')
text(-0.5, sin(-0.5), '$\leftarrow (-0.5, sin(-0.5))$')
legend()

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散点图：

a = linspace(-5,5,200)
b = 3*x+2
bn = b + normal(5, 3.5,size(b))   # 产生数据
scatter(a, bn, color='g', alpha=0.4, s=50)

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直方图：

bar = normal(2, 1.5, 100)
hist(bar, label='Normal')
legend()

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箱形图：

box = normal(2, 1.5, 100)
sns.boxplot(box)