Polar Plot: TypeError: 'numpy.float64' object cannot be interpreted as an index
Polar Plot: TypeError: 'numpy.float64' object cannot be interpreted as an index
我怀疑对此的答案是“不要使用 Matplotlib 极坐标图”。
我正在尝试生成极坐标图 similar to this example plot 并将图表写入文件。
"""
Demo of a line plot on a polar axis.
"""
import numpy as np
import matplotlib.pyplot as plt
r = np.arange(0, 3.0, 0.01)
theta = 2 * np.pi * r
ax = plt.subplot(111, polar=True)
ax.plot(theta, r, color='r', linewidth=3)
ax.set_rmax(2.0)
ax.grid(True)
ax.set_title("A line plot on a polar axis", va='bottom')
plt.savefig("/path/to/file/plot.png")
当使用 show() 时，图形将绘制并且回溯出现在 shell 中。当使用 savefig() 时，回溯导致 savefig() 操作未完成就退出——所以没有文件被写入。它似乎是 matplotlib 的内部错误，仅将脚本转换为删除 numpy 是不够的，因为 savefig() 正在使用 numpy 进行极坐标绘图。
此示例在 Mac OS 的早期版本上运行良好（可能是 numpy 的早期版本）。
我尝试了什么
- 诱捕
TypeError。
- 将
r 和 theta 转换为标准元组并从脚本中删除 numpy。
我不能尝试的东西
- 从 Matplotlib
show() 视图中保存无花果 window（必须使用 savefig()）。
- 正在升级Python
- 正在升级 Matplotlib
- 正在降级 numpy
- 降级 Mac OS
我运气不好吗？
Mac OS 10.15.7
Python 2.7
Matplotlib 1.3.1
numpy 1.16.6
更新： 上面的脚本在具有此版本 numpy 的不同机器上运行良好：
Mac OS 10.15.7
Python 2.7
Matplotlib 1.3.1
numpy 1.8.0rc1
更新 2：
这是所有冗长的回溯。
Traceback (most recent call last):
File "untitled text 7", line 20, in <module>
plt.savefig('/Path/To/File/plot.png')
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/pyplot.py", line 561, in savefig
return fig.savefig(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/figure.py", line 1421, in savefig
self.canvas.print_figure(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backend_bases.py", line 2220, in print_figure
**kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backend_bases.py", line 1962, in print_png
return agg.print_png(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backends/backend_agg.py", line 505, in print_png
FigureCanvasAgg.draw(self)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backends/backend_agg.py", line 451, in draw
self.figure.draw(self.renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/figure.py", line 1034, in draw
func(*args)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axes.py", line 2086, in draw
a.draw(renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axis.py", line 1096, in draw
tick.draw(renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axis.py", line 234, in draw
self.gridline.draw(renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/lines.py", line 550, in draw
tpath, affine = transf_path.get_transformed_path_and_affine()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2562, in get_transformed_path_and_affine
self._revalidate()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2539, in _revalidate
self._transform.transform_path_non_affine(self._path)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2230, in transform_path_non_affine
self._a.transform_path(path))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2227, in transform_path_non_affine
return self._a.transform_path_non_affine(path)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2230, in transform_path_non_affine
self._a.transform_path(path))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/projections/polar.py", line 72, in transform_path_non_affine
ipath = path.interpolated(path._interpolation_steps)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/path.py", line 553, in interpolated
vertices = simple_linear_interpolation(self.vertices, steps)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/cbook.py", line 1711, in simple_linear_interpolation
result = np.zeros(new_shape, a.dtype)
TypeError: 'numpy.float64' object cannot be interpreted as an index
在新的 numpy 中，最后一个表达式会产生各种结果或错误：
In [108]: np.zeros(10)
Out[108]: array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0.])
In [109]: np.zeros(10.)
Traceback (most recent call last):
File "<ipython-input-109-6c3d535444cc>", line 1, in <module>
np.zeros(10.)
TypeError: 'float' object cannot be interpreted as an integer
In [111]: np.zeros(np.array(10.))
Traceback (most recent call last):
File "<ipython-input-111-4250f3d71116>", line 1, in <module>
np.zeros(np.array(10.))
TypeError: only integer scalar arrays can be converted to a scalar index
In [112]: np.zeros(np.array([10.]))
Traceback (most recent call last):
File "<ipython-input-112-e10bfdd4bb4f>", line 1, in <module>
np.zeros(np.array([10.]))
TypeError: 'numpy.float64' object cannot be interpreted as an integer
我怀疑对此的答案是“不要使用 Matplotlib 极坐标图”。
我正在尝试生成极坐标图 similar to this example plot 并将图表写入文件。
"""
Demo of a line plot on a polar axis.
"""
import numpy as np
import matplotlib.pyplot as plt
r = np.arange(0, 3.0, 0.01)
theta = 2 * np.pi * r
ax = plt.subplot(111, polar=True)
ax.plot(theta, r, color='r', linewidth=3)
ax.set_rmax(2.0)
ax.grid(True)
ax.set_title("A line plot on a polar axis", va='bottom')
plt.savefig("/path/to/file/plot.png")
当使用 show() 时，图形将绘制并且回溯出现在 shell 中。当使用 savefig() 时，回溯导致 savefig() 操作未完成就退出——所以没有文件被写入。它似乎是 matplotlib 的内部错误，仅将脚本转换为删除 numpy 是不够的，因为 savefig() 正在使用 numpy 进行极坐标绘图。
此示例在 Mac OS 的早期版本上运行良好（可能是 numpy 的早期版本）。
我尝试了什么
- 诱捕
TypeError。 - 将
r和theta转换为标准元组并从脚本中删除numpy。
我不能尝试的东西
- 从 Matplotlib
show()视图中保存无花果 window（必须使用savefig()）。 - 正在升级Python
- 正在升级 Matplotlib
- 正在降级 numpy
- 降级 Mac OS
我运气不好吗？
Mac OS 10.15.7
Python 2.7
Matplotlib 1.3.1
numpy 1.16.6
更新： 上面的脚本在具有此版本 numpy 的不同机器上运行良好：
Mac OS 10.15.7
Python 2.7
Matplotlib 1.3.1
numpy 1.8.0rc1
更新 2： 这是所有冗长的回溯。
Traceback (most recent call last):
File "untitled text 7", line 20, in <module>
plt.savefig('/Path/To/File/plot.png')
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/pyplot.py", line 561, in savefig
return fig.savefig(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/figure.py", line 1421, in savefig
self.canvas.print_figure(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backend_bases.py", line 2220, in print_figure
**kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backend_bases.py", line 1962, in print_png
return agg.print_png(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backends/backend_agg.py", line 505, in print_png
FigureCanvasAgg.draw(self)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/backends/backend_agg.py", line 451, in draw
self.figure.draw(self.renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/figure.py", line 1034, in draw
func(*args)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axes.py", line 2086, in draw
a.draw(renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axis.py", line 1096, in draw
tick.draw(renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/axis.py", line 234, in draw
self.gridline.draw(renderer)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/artist.py", line 55, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/lines.py", line 550, in draw
tpath, affine = transf_path.get_transformed_path_and_affine()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2562, in get_transformed_path_and_affine
self._revalidate()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2539, in _revalidate
self._transform.transform_path_non_affine(self._path)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2230, in transform_path_non_affine
self._a.transform_path(path))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2227, in transform_path_non_affine
return self._a.transform_path_non_affine(path)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/transforms.py", line 2230, in transform_path_non_affine
self._a.transform_path(path))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/projections/polar.py", line 72, in transform_path_non_affine
ipath = path.interpolated(path._interpolation_steps)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/path.py", line 553, in interpolated
vertices = simple_linear_interpolation(self.vertices, steps)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/matplotlib/cbook.py", line 1711, in simple_linear_interpolation
result = np.zeros(new_shape, a.dtype)
TypeError: 'numpy.float64' object cannot be interpreted as an index
在新的 numpy 中，最后一个表达式会产生各种结果或错误：
In [108]: np.zeros(10)
Out[108]: array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0.])
In [109]: np.zeros(10.)
Traceback (most recent call last):
File "<ipython-input-109-6c3d535444cc>", line 1, in <module>
np.zeros(10.)
TypeError: 'float' object cannot be interpreted as an integer
In [111]: np.zeros(np.array(10.))
Traceback (most recent call last):
File "<ipython-input-111-4250f3d71116>", line 1, in <module>
np.zeros(np.array(10.))
TypeError: only integer scalar arrays can be converted to a scalar index
In [112]: np.zeros(np.array([10.]))
Traceback (most recent call last):
File "<ipython-input-112-e10bfdd4bb4f>", line 1, in <module>
np.zeros(np.array([10.]))
TypeError: 'numpy.float64' object cannot be interpreted as an integer