title: Is there a better way to print the results of a test sample ran through a model?
body: <p>Good morning, all!</p>
  
  <p>I am attempting to output 10 examples of test data that has been run through my model.  Admittedly, I am trying to use someone else's code that I adapted to my needs.  However, the output I am getting is not what they got, and I cannot figure out why.</p>
  
  <p>Here is the code as I adapted it:</p>
  
  <pre><code>s = sample( test[["mpg"]])
  pred &lt;- predict(model,newdata = autoMPG[s,])
  z &lt;- autoMPG[["mpg"]][s]
  
  for ( i in 1:2 ) {
    print( paste( i,s,z, "=", pred[1:10]))
  }
  </code></pre>
  
  <p>The output is supposed to be a list like this:</p>
  
  <pre><code>[1] "1 1526 5 = 5.54867084076152"  
  [1] "2 413 5 = 4.95790890809035"  
  [1] "3 133 5 = 6.15451009369984"  
  [1] "4 1062 8 = 6.53549803946163"  
  [1] "5 1564 5 = 5.36176753883042"  
  [1] "6 396 7 = 6.56540500470723"  
  [1] "7 37 6 = 5.62346051846786"  
  [1] "8 1295 6 = 5.7652546426557"  
  [1] "9 208 5 = 4.99319541968862"  
  [1] "10 1398 5 = 5.13480728298929"  
  </code></pre>
  
  <p>What I am instead getting is a list where i=1 is repeated for all 98 objects in s, and then again for i=2, and so on.</p>
  
  <pre><code>[1] "1 26 10 = 8.08808398965549"   "1 26 10 = 8.08808398965549"   "1 13 15 = 13.1237890047814"    
   [4] "1 24 26 = 23.4755796610819"   "1 32 25 = 24.4615684249838"   "1 21.5 25 = 21.2212989104033"  
   [7] "1 11 15 = 14.4796068968617"   "1 16 22 = 19.924438447419"    "1 33.5 19 = 21.6845378530998"  
  [10] "1 26 10 = 8.08808398965549"   "1 38 14 = 11.2628565963676"   "1 17.6 18 = 20.3102676949862"  
  [13] "1 14 14 = 17.5989382712609"   "1 34.1 16 = 16.7252629171779" "1 18 21 = 21.594151320571"     
  [16] "1 20 26 = 27.0608492137994"   "1 26 10 = 8.08808398965549"   "1 31.9 28 = 24.4091504746601"  
  [19] "1 27.9 10 = 9.77302160656119" "1 23 25 = 23.1635241057839"   "1 13 15 = 13.1237890047814"    
  [22] "1 18 21 = 21.594151320571"    "1 16 22 = 19.924438447419"    "1 20.5 26 = 27.0608492137994"  
  [25] "1 14 14 = 17.5989382712609"   "1 27.5 10 = 9.77302160656119" "1 18 21 = 21.594151320571"     
  [28] "1 32 25 = 24.4615684249838"   "1 14 14 = 17.5989382712609"   "1 11 15 = 14.4796068968617"    
  [31] "1 27 10 = 9.77302160656119"   "1 20.8 26 = 27.0608492137994" "1 24 26 = 23.4755796610819"    
  [34] "1 36 19 = 17.6211715089865"   "1 13 15 = 13.1237890047814"   "1 20 26 = 27.0608492137994"    
  [37] "1 14 14 = 17.5989382712609"   "1 27 10 = 9.77302160656119"   "1 15 24 = 22.878137066301"     
  [40] "1 29 9 = 7.8719748297333"     "1 24 26 = 23.4755796610819"   "1 34.2 16 = 16.7252629171779"  
  [43] "1 25 21 = 21.0732409251392"   "1 19 27 = 24.3996898340437"   "1 25 21 = 21.0732409251392"...
  </code></pre>
  
  <p>Any suggestions as to what might be wrong, or even a better way to do this, would be greatly appreciated. TIA!  </p>
  
  <p><strong>*Edited: I added the wrong line of code before.</strong></p>