本文整理汇总了Python中scipy.spatial.Delaunay.area方法的典型用法代码示例。如果您正苦于以下问题：Python Delaunay.area方法的具体用法？Python Delaunay.area怎么用？Python Delaunay.area使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类scipy.spatial.Delaunay的用法示例。
在下文中一共展示了Delaunay.area方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: DTFE
# 需要导入模块: from scipy.spatial import Delaunay [as 别名]
# 或者: from scipy.spatial.Delaunay import area [as 别名]
def DTFE(self):
"""Because it's so awesomely optimized now, calculate the area at all particles."""
from scipy.spatial import Delaunay
self.subsetTmp([(0,None)])
tmp=self.fetch(['x','y'])
d=Delaunay(tmp)
tmp=np.zeros(self.n)
flat=d.vertices.flatten()
widgets = [progressbar.Percentage(), progressbar.Bar(),' ',progressbar.FormatLabel('Time elapsed: %(elapsed)s'),' ',progressbar.ETA()]
pbar = progressbar.ProgressBar(widgets=widgets, maxval=self.n).start()
#Replace each point in d.vertices with its (x,y) coordinate in a flat way
d.vertPts=np.reshape(d.points[flat].flatten(),(d.vertices.shape[0],6))
#Calculate the area of all the triangles at once...
d.area=np.abs((d.vertPts[:,0]-d.vertPts[:,4])*(d.vertPts[:,3]-d.vertPts[:,1])-(d.vertPts[:,0]-d.vertPts[:,2])*(d.vertPts[:,5]-d.vertPts[:,1]))/2.
#Basic idea is that each triangle is represented 3 times, with the coordinates permuted.
#The resulting big array can be sorted by its first column and we can efficiently pull out
fast=np.column_stack([d.vertices,d.area])
fast2=deepcopy(fast)
#Permute cols
fast2[:,0]=fast[:,1]
fast2[:,1]=fast[:,2]
fast2[:,2]=fast[:,0]
fast3=deepcopy(fast)
fast3[:,0]=fast2[:,1]
fast3[:,1]=fast2[:,2]
fast3[:,2]=fast2[:,0]
#Stack them all up
bigfast=np.row_stack([fast,fast2,fast3])
#Sort
bigfast=bigfast[np.argsort(bigfast[:,0]),]
counts=np.bincount(np.intp(bigfast[:,0]))
boundaries=np.append(0,np.cumsum(counts))
for i in xrange(self.n):
pbar.update(i)
#Fetch the area of each cell...
tmp[i]=(3.*self.m)/np.sum(bigfast[boundaries[i]:boundaries[i+1],3])
self.DTCD_=tmp
self.subsetRestore()