title: python cdist error ValueError: XA must be a 2-dimensional array
body: <p>here's a shortened version of my code:</p>
  
  <pre><code>`dist_array = ssd.cdist(test[y], training)`
  </code></pre>
  
  <p>test[y] printed is</p>
  
  <pre><code>[  0.00000000e+00   1.79900000e+01   1.03800000e+01   1.22800000e+02
     1.00100000e+03   1.18400000e-01   2.77600000e-01   3.00100000e-01
     1.47100000e-01   2.41900000e-01   7.87100000e-02   1.09500000e+00
     9.05300000e-01   8.58900000e+00   1.53400000e+02   6.39900000e-03
     4.90400000e-02   5.37300000e-02   1.58700000e-02   3.00300000e-02
     6.19300000e-03   2.53800000e+01   1.73300000e+01   1.84600000e+02
     2.01900000e+03   1.62200000e-01   6.65600000e-01   7.11900000e-01
     2.65400000e-01   4.60100000e-01   1.18900000e-01]
  </code></pre>
  
  <p>training printed (shortened) is:</p>
  
  <pre><code>[[  0.00000000e+00   1.92100000e+01   1.85700000e+01 ...,   2.09100000e-01
      3.53700000e-01   8.29400000e-02]
   [  0.00000000e+00   1.47100000e+01   2.15900000e+01 ...,   1.83400000e-01
      3.69800000e-01   1.09400000e-01]
   [  1.00000000e+00   1.30500000e+01   1.93100000e+01 ...,   1.11100000e-02
      2.43900000e-01   6.28900000e-02]
   ..., 
   [  0.00000000e+00   1.66000000e+01   2.80800000e+01 ...,   1.41800000e-01
      2.21800000e-01   7.82000000e-02]
   [  0.00000000e+00   2.06000000e+01   2.93300000e+01 ...,   2.65000000e-01
      4.08700000e-01   1.24000000e-01]
   [  1.00000000e+00   7.76000000e+00   2.45400000e+01 ...,   0.00000000e+00
      2.87100000e-01   7.03900000e-02]]
  </code></pre>
  
  <p>Both have 31 columns. Is there a way to find the distances between array XA and each row of array XB and have the distances outputted into another array?</p>
  
  <p>Thank you very much!</p>