title: how to repeat the matrix in tensorflow keras?
body: <p>I am trying to rewrite the following python code in tensorflow, keras. However, I cannot find the np.matlib.repmat equivalent in tensorflow keras. Could anyone help me out with this issue?</p>
  
  <pre><code>index = np.arange(0,256);
  index_transpose = index.reshape(256,1)
  
  I = numpy.matlib.repmat(index_transpose,1,256).reshape(256,256);
  J = numpy.matlib.repmat(index,256,1);
  </code></pre>
  
  <p>I and J should be in the shape: 
  I shape: (256, 256), J shape: (256, 256)</p>