title: How to create custom tensor value with shape (b,n,m)?
body: <p>How to create custom tensor value with shape (b,n,m)
  I see the cppflow::fill method but it allows inserting 1 value which fills the whole same value in the shape
  I see <a href="https://github.com/serizba/cppflow/issues/114" rel="nofollow noreferrer">https://github.com/serizba/cppflow/issues/114</a> but have not found how to fill the value from the custom value or vector for example</p>
  <p>I've already created a 2d vector using</p>
  <pre><code>    vector&lt;vector&lt;float&gt;&gt; tensordata;
    
      for(int i=0; i&lt;cloud-&gt;points.size(); i++)
      {
          vector&lt;float&gt; temp;
          for(int j=0; j&lt;3; j++)
          {
              if(j==0)
              {
                  temp.push_back(cloud-&gt;points[i].x);
              }
              if(j==1)
              {
                  temp.push_back(cloud-&gt;points[i].y);
              }
              if(j==2)
              {
                  temp.push_back(cloud-&gt;points[i].z);
              }            
          }
          tensordata.push_back(temp);
      }
  </code></pre>
  <p>but still, there's an error to convert it into a tensor.</p>