loops - 类型错误:ufunc 'add' 不包含循环

Question

我使用 Anaconda 和 gdsCAD，当所有软件包都正确安装时出现错误。就像这里解释的那样:http://pythonhosted.org/gdsCAD/

TypeError: ufunc 'add' did not contain a loop with signature matching types dtype('S32') dtype('S32') dtype('S32')

我的导入看起来像这样(最后我导入了所有内容):

import numpy as np
from gdsCAD import *
import matplotlib.pyplot as plt

我的示例代码如下所示:

something = core.Elements()
box=shapes.Box( (5,5),(1,5),0.5)
core.default_layer = 1
core.default_colors = 2
something.add(box)
something.show()

我的错误消息如下所示:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-5-2f90b960c1c1> in <module>()
 31 puffer_wafer = shapes.Circle((0.,0.), puffer_wafer_radius, puffer_line_thickness)
 32 bp.add(puffer_wafer)
---> 33 bp.show()
 34 wafer = shapes.Circle((0.,0.), wafer_radius, wafer_line_thickness)
 35 bp.add(wafer)

C:\Users\rpilz\AppData\Local\Continuum\Anaconda2\lib\site-packages\gdscad-0.4.5-py2.7.egg\gdsCAD\core.pyc in _show(self)
 80     ax.margins(0.1)
 81 
---> 82     artists=self.artist()
 83     for a in artists:
 84         a.set_transform(a.get_transform() + ax.transData)

C:\Users\rpilz\AppData\Local\Continuum\Anaconda2\lib\site-packages\gdscad-0.4.5-py2.7.egg\gdsCAD\core.pyc in artist(self, color)
952         art=[]
953         for p in self:
--> 954             art+=p.artist()
955         return art
956 

C:\Users\rpilz\AppData\Local\Continuum\Anaconda2\lib\site-packages\gdscad-0.4.5-py2.7.egg\gdsCAD\core.pyc in artist(self, color)
475         poly = lines.buffer(self.width/2.)
476 
--> 477         return [descartes.PolygonPatch(poly, lw=0, **self._layer_properties(self.layer))]
478 
479 

C:\Users\rpilz\AppData\Local\Continuum\Anaconda2\lib\site-packages\gdscad-0.4.5-py2.7.egg\gdsCAD\core.pyc in _layer_properties(layer)
103         # Default colors from previous versions
104         colors = ['k', 'r', 'g', 'b', 'c', 'm', 'y']
--> 105         colors += matplotlib.cm.gist_ncar(np.linspace(0.98, 0, 15))
106         color = colors[layer % len(colors)]
107         return {'color': color}

TypeError: ufunc 'add' did not contain a loop with signature matching types dtype('S32') dtype('S32') dtype('S32')    

Answer 1

从正常安装到绘图问题，gdsCAD 一直是一个痛苦的问题。
此问题是因为传递给颜色函数的数据类型错误。可以通过在 core.py 中编辑以下行来解决

colors += matplotlib.cm.gist_ncar(np.linspace(0.98, 0, 15))

至

colors += list(matplotlib.cm.gist_ncar(np.linspace(0.98, 0, 15)))

如果你不知道 core.py 位于哪里。只需输入:

from gdsCAD import *
core

这将为您提供 core.py 文件的路径。祝你好运!