matplotlib绘图基础--2

紧接着上一篇 用三种线条表示三种正弦趋势 In [6]: t = np.arange(0,2.5,0.1)   In [7]: y1 = map(math.sin,math.pi*t)   In [8]: y2 =map(math.sin,math.pi*t+math.pi/2)   In [9]: y3 =map(math.sin,math.pi*t-math.pi/2)   In [10]:

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