scipy.interpolate.interpnd抱怨'Delaunay'对象没有属性'simplices'

Question

几个月前我写的一些代码正在粉碎,并且由于某些原因它不再起作用......简而言之,我使用scipy.interpolate.LinearNDInterpolator对象来插入模型并与数据进行比较.现在,当我尝试使用我想要插值的坐标调用插值器对象时,我收到以下错误:

In [9]: a([[3500, 3.5, 1.5]])
AttributeError                            Traceback (most recent call last)
<ipython-input-9-91f2103e7a0c> in <module>()
----> 1 a([[3500, 3.5, 1.5]])

/usr/lib64/python2.7/site-packages/scipy/interpolate/interpnd.so in     scipy.interpolate.interpnd.NDInterpolatorBase.__call__ (scipy/interpolate/interpnd.c:3133)()

/usr/lib64/python2.7/site-packages/scipy/interpolate/interpnd.so in     scipy.interpolate.interpnd.LinearNDInterpolator._evaluate_double (scipy/interpolate/interpnd.c:3954)()

/usr/lib64/python2.7/site-packages/scipy/interpolate/interpnd.so in scipy.interpolate.interpnd.LinearNDInterpolator._do_evaluate (scipy/interpolate/interpnd.c:4684)()

AttributeError: 'Delaunay' object has no attribute 'simplices'

我之前从未见过这个错误,代码以前也有用过.在我不知道的scipy中,有些东西发生了变化吗？

谢谢你的期待!

Answer 1

我猜你使用的是旧版本的库：

Delaunay 库有两个不同的单纯形访问器：“Delaunay.simplices”和“Delaunay.vertices”，如下所示（最新文档）：http://docs.scipy.org/doc/scipy/reference/ generated/scipy.spatial。德劳内.html

两个 Delaunay.vertices 被标记为“已弃用”。

然而，在 Ubuntu 13.04 上，simplices 调用不存在，因为它仍然使用 scipy 0.11.0： http://docs.scipy.org/doc/scipy-0.11.0/reference/ generated/scipy.spatial.Delaunay.html# scipy.spatial.Delaunay

尝试使用这个最小的示例，或者只是重写对顶点的单纯形调用：

from __future__ import print_function

import numpy as np
from scipy.spatial import Delaunay
import sys

my_molecule = np.random.rand(400,3) #points for query
points = np.random.rand(1000, 3)   #points used for Triangulation

diag = Delaunay(points)
simplices = diag.find_simplex(my_molecule)

for point,simplex in zip(my_molecule,simplices):
    if simplex == -1:
        print ("Point not included in diag.")
        continue
    print ("Doing vertices call: ")
    spoints = diag.vertices[simplex]
    print ("Doing simplices call: ")
    spoints = diag.simplices[simplex]