title: What is the best method for using Datashader to plot data from a NumPy array?
body: <p>In following the <a href="http://datashader.readthedocs.io/en/latest/" rel="noreferrer">Datashader</a> example <a href="https://anaconda.org/jbednar/tseries/notebook" rel="noreferrer">notebook demonstrating lines</a>, the input is a Pandas DataFrame (though it seems a Dask DataFrame would work as well).  My data is in a NumPy array.  Can I use Datashader to plot lines from NumPy arrays without first putting them into a DataFrame?  </p>
  
  <p>The documentation for <a href="http://datashader.readthedocs.io/en/latest/api.html" rel="noreferrer">line glyph</a> seems to indicate this is possible but I did not find an example.  The example notebook I linked to uses <code>Canvas.line</code> which I did not find in the documentation.</p>