title: How to get 3D bar graph in Octave?
body: <p>I use <code>bar3</code> in Matlab to plot a 3D bar plot. This is useful to quickly get a sense of values in a matrix or a 1-channel image read in as a matrix. When I switched to Octave, I could not find the bar3 function.</p>
  
  <p>Is there any alternative to bar3 in Octave? Or a reimplementation by someone I could import and render the plot?</p>