AttributeError：'numpy.ndarray'對象沒有屬性'as_rgba_str'

Question

我是一個新手程序員，我的直覺是，這個錯誤是由於某種安裝或版本問題，但我不知道是什麼。我在OS 10.8上運行python 2.7，今天剛安裝numpy 1.12.0和matplotlib-1.5.1，試圖構建一個熱圖。

我試圖運行從matplotlib網站的這個例子（http://matplotlib.org/examples/api/image_zcoord.html）：

""" 
Show how to modify the coordinate formatter to report the image "z" 
value of the nearest pixel given x and y 
""" 
import numpy as np 
import matplotlib.pyplot as plt 
import matplotlib.cm as cm 

X = 10*np.random.rand(5, 3) 

fig, ax = plt.subplots() 
ax.imshow(X, cmap=cm.jet, interpolation='nearest') 

numrows, numcols = X.shape 


def format_coord(x, y): 
    col = int(x + 0.5) 
    row = int(y + 0.5) 
    if col >= 0 and col < numcols and row >= 0 and row < numrows: 
     z = X[row, col] 
     return 'x=%1.4f, y=%1.4f, z=%1.4f' % (x, y, z) 
    else: 
     return 'x=%1.4f, y=%1.4f' % (x, y) 

ax.format_coord = format_coord 
plt.show() 

出現一個圖形窗口，但不顯示任何內容，並且鼠標懸停座標那種「堆棧」，而不是清爽很快變得難以辨認。我在終端也出現此錯誤：

AttributeError: 'numpy.ndarray' object has no attribute 'as_rgba_str' 

其他類似從matplotlib網站的例子也表現出類似的行爲。 當然，請讓我知道如果這是重複的（我試圖尋找答案，但沒有發現類似於我的問題，但我也可能只是不知道要搜索什麼）。

如果是安裝錯誤，將非常感謝您對如何解決這個問題的說明，或者在正確的方向上提供詳細說明。謝謝！

編輯：這是錯誤之前的回溯：

Traceback (most recent call last): 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d- py2.7-macosx-10.8-x86_64.egg/matplotlib/artist.py", line 63, in draw_wrapper 
draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/figure.py", line 1262, in draw 
renderer, self, dsu, self.suppressComposite) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/image.py", line 139, in _draw_list_compositing_images 
    a.draw(renderer) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/artist.py", line 63, in draw_wrapper 
draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/axes/_base.py", line 2355, in draw 
mimage._draw_list_compositing_images(renderer, self, dsu) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/image.py", line 139, in _draw_list_compositing_images 
    a.draw(renderer) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/artist.py", line 63, in draw_wrapper 
draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/image.py", line 472, in draw 
renderer.draw_image(gc, l, b, im) 
    File "/usr/local/lib/python2.7/site-packages/matplotlib-1.5.1+1539.g1111c1d-py2.7-macosx-10.8-x86_64.egg/matplotlib/backends/backend_macosx.py", line 113, in draw_image 
    nrows, ncols, data = im.as_rgba_str() 
AttributeError: 'numpy.ndarray' object has no attribute 'as_rgba_str' 

Answer 1

肯定會出現某種安裝錯誤，我安裝了Anaconda並解決了問題。對於那些未來會發現這個問題的人來說，ActivePython沒有numpy或scipy。

Answer 2

我無法解決您的問題，但我可以告訴你，它的安裝問題，您發佈的代碼工作完美對我的安裝使用Python 2.7。雖然我使用Windows而不是IOS