title: log scale x-axis labels
body: <p>The labels on the x-axis are defaulting to scientific notation no matter how small cex.axis is.  How can I override scientific notation to get the labels to print out as specified?  Here is the code (UNIT here is 0.0105):  </p>
  
  <pre><code>plot( xm,yv ,log="xy",ylim=c(0.1,20)/UNIT,
    xlim=c(0.004,20)*UNIT,xlab="Dose",xaxt="n",ylab="Amount",type="n")
  axis(1,at=c(0.0001,0.005,0.001,0.05,0.01,0.5,1),cex.axis=0.9)
  </code></pre>