title: plotting data from a dat file in R
body: <p>I am reading a manual of R that contains the following data in a file:</p>
  
  <pre><code>0.319132782  0.808869293
  0.612725533  0.932766104
  0.205770354  0.695866667
  0.395410972  1.044069042
  0.449560874  0.932377679
  0.532886257  1.009741399
  </code></pre>
  
  <p>data is delimited by a couple of blank spaces between each number. It is a .dat file
  In one part of the example the author wants to plot the data and puts:</p>
  
  <pre><code>plot(all.x,all.y,xlab="x",ylab="y")
  </code></pre>
  
  <p>I have read the file with:</p>
  
  <pre><code>all&lt;-read.table("examples.dat",header=F)
  </code></pre>
  
  <p>for the references to all.x and all.y I use</p>
  
  <pre><code>all.x&lt;-all[1]
  all.y&lt;-all[2]
  </code></pre>
  
  <p>the problem is that when I plot I got an error of stripchart, why is that?</p>