python學習之matplotlib實戰

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import numpy as npdef main():    #print("hello")    #line    import matplotlib.pyplot as plt    x=np.linspace(-np.pi,np.pi,256,endpoint=True)    #print(x)    c,s = np.cos(x),np.sin(x)    plt.figure(1)#繪製第一個圖    plt.plot(x,c,color="blue",linewidth=1.0,linestyle="-",label="COS", alpha=0.5)#繪製cos    plt.plot(x,s,"r*", label="SIN") # 繪製sin    plt.title("cos & sin") #添加標題    ax=plt.gca()#軸的編輯器    ax.spines["right"].set_color("none")    ax.spines["top"].set_color("none")    ax.spines["left"].set_position(("data",0))    ax.spines["bottom"].set_position(("data",0))    plt.show()if __name__ == ‘__main__‘:    main()

　　

python學習之matplotlib實戰