python绘制封闭多边形教程
数据格式:(polygon.txt) 里面含有2个多边形,一行是一个点
0.085, 0.834,
0.024, 0.744,
0, 0.63,
0.024, 0.516,
0.085, 0.427,
0.5, 0.02,
0.675, 0.191,
0.795, 0.071,
0.815, 0.052,
0.835, 0.032,
0.84, 0.026,
0.844, 0.022,
0.856, 0.012,
0.871, 0.005,
0.886, 0.001,
0.903, 0,0.823, 0.061,
0.823, 0.062,
0.826, 0.061,
import pylab as py import time from pylab import * from matplotlib.font_manager import FontProperties import matplotlib.pyplot as plt font = FontProperties(fname=r"c:\windows\fonts\simsun.ttc", size=14) def readdata(ls): l = ls.split(',') if len(l)>2: return [l[0],l[1]] else: return None if "__main__"==__name__: print(9) file_obj=open('fanmaker.txt') k=0 line=file_obj.readline() polygon =[] while line: k+=1 px=[] py=[] while line: row = readdata(line) print (line) px.append(row[0]) py.append(row[1]) line=file_obj.readline() if line=='\n': ps=[] px.append(px[0]) py.append(py[0]) ps.append(px) ps.append(py) polygon.append(ps) line=file_obj.readline() break x=np.array(polygon[0][0]) y=np.array(polygon[0][1]) ## plt.fill(x,y,'b') plt.plot(x,y,'b-', linewidth=2) for i in range(len(polygon)-1): x=np.array(polygon[i+1][0]) y=np.array(polygon[i+1][1]) ## plt.fill(x,y,'b') plt.plot(x,y,'r-', linewidth=2) plt.hold(True) ## plt.show() x1=[-0.5 ,1.5] x2=[-0.5,-0.5] x3=[1.5 ,-0.5] x4=[1.5,1.5] plt.plot(x1,x2,'-') plt.plot(x2,x3,'-') plt.plot(x3,x4,'-') plt.plot(x4,x1,'-') plt.axis([-0.5,1.5 ,-0.5,1.5]) plt.show() # plt.axis('tight') file_obj.close()
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