title: Custom axis scales - "Reverse" logarithmic?
body: <p>Sorry about the poor title ;)</p>
  
  <p>I'm trying to recreate a matlab plot I've come across in some other work, but I don't quite understand the scale they are using.  The y axis increments are as follows (from the top [+ve y]):</p>
  
  <p>0.9999, 
  0.999,
  0.99,
  0.9,
  0</p>
  
  <p>I can use semilogy to plot a logarithmic graph, but this is kind of the wrong way round; my increments go</p>
  
  <p>1,
  0.1,
  0.01,
  0.001,
  etc</p>
  
  <p>which is actually 1 - <em>i</em>, where <em>i</em> is the increments I actually want!  I don't entirely understand how to describe this type of plot anyway; can anyone help?</p>