title: MATLAB: Matrix with binary info (1 and 0) and image command show nothing
body: <p>After processing an input I finally have a matrix of N x M x L representing a volume. The values on that matrix are only 0 or 1. When I try to display a "slice" from this volume using image like this: </p>
  
  <pre><code>image(volume(:,:,80))
  </code></pre>
  
  <p>the displayed figure is all blue. Now if I use imagesc, the image is displayed ok (in blue and red tones). I think this is related to colormap but can't really figure out how to display the images with the image command.
  My final goal is to display 3 or 4 slices in one 3d plot, somthing similar to what is shown here: <a href="http://www.mathworks.com/help/matlab/visualize/techniques-for-visualizing-scalar-volume-data.html#f5-4457" rel="nofollow">http://www.mathworks.com/help/matlab/visualize/techniques-for-visualizing-scalar-volume-data.html#f5-4457</a></p>