title: How to put latitude on Y axis in hovmoller plot?
body: <p>I am plotting <code>hovmoller</code> plot for three rasters but the function plots the latitude on the x axis and the time on the y axis. normally (much easier to read) latitude is on the Y axis.
  Reproducible example:</p>
  
  <pre><code>library("rasterVis")
  r &lt;- raster(nrows=10, ncols=10)
  r &lt;- setValues(r, 1:ncell(r))
  r1 &lt;- raster(nrows=10, ncols=10)
  r1 &lt;- setValues(r1, 1:ncell(r))
  r2 &lt;- raster(nrows=10, ncols=10)
  r2 &lt;- setValues(r2, 1:ncell(r))
  St=stack(r,r1,r2)
  idx &lt;- seq(as.Date('2008-01-15'), as.Date('2008-1-17'), 'day')
  SISmm &lt;- setZ(St, idx)
  hovmoller(SISmm, contour=FALSE, panel=panel.levelplot.raster,
            yscale.components=yscale.raster.subticks,
            interpolate=TRUE, par.settings=RdBuTheme)
  </code></pre>
  
  <p>This produces: <img src="https://i.stack.imgur.com/LVewb.png" alt="example plot"></p>
  
  <p>So I want the time to be on the X axis and latitude on the Y axis!</p>