Python---Matplotlip注釋

標籤：http   字型   cti   列印   img   .com   ann   logs   not   

注釋

import matplotlib.pyplot as pltimport numpy as npx = np.linspace(-3,3,50)y = 2*x+1plt.figure(num=‘zhushi‘,figsize=(8,5))plt.plot(x,y,)ax = plt.gca()ax.spines[‘right‘].set_color(‘none‘)ax.spines[‘top‘].set_color(‘none‘)ax.xaxis.set_ticks_position(‘bottom‘)ax.yaxis.set_ticks_position(‘left‘)ax.spines[‘bottom‘].set_position((‘data‘,0))ax.spines[‘left‘].set_position((‘data‘,0))x0 = 1y0 = 2*x0+1plt.scatter(x0,y0,s=50,color=‘b‘)#s=大小plt.plot([x0,x0],[y0,0],‘k--‘,lw=1.0)#‘k--‘線的樣式，顏色，lw=寬度；畫出兩個點，(x0,y0)和(x0,0)#   method 1plt.annotate(r‘$2x+1=%s$‘% y0,xy=(x0,y0),xycoords=‘data‘,xytext = (+30,-30),textcoords=‘offset points‘,fontsize=16,arrowprops=dict(arrowstyle=‘->‘,connectionstyle=‘arc3,rad=.2‘))#xy=開始列印的座標，xycoords=以什麼為基準，textcoords=從這個點開始列印，fonsize=字型的大小,arrowprop=角度和模型# method 2plt.text(-3.7,3,r‘$This\ is\ \mu\ \sigma_i$‘,fontdict={‘size‘:16,‘color‘:‘r‘})plt.show()

 

 

Python---Matplotlip注釋