title: Having issues with how the order function places data in a data frame
body: <p>Here is my code I used to generate the data and the order:</p>
  
  <pre><code>cd1 = data_grouped1
  cd2 = data_grouped2
  smth_ln = lowess(cd1,cd2)
  data_frame = data.frame(cd1,cd2)
  ordered_data_frame = data_frame[order(data_frame$cd1),]
  </code></pre>
  
  <p>The problem is with the output of ordered_data_frame:</p>
  
  <pre><code>          cd1        cd2
  12   1.318415   8.862540
  20   1.519023  13.741513
  3    2.573028  11.693841
  11   3.563886   5.304126
  7    3.724844   1.275584
  18   4.328285  18.567782
  1    4.341053  16.394396
  15   5.881258   5.234056
  10   6.644274   4.099856
  6    8.945707   2.146440
  5   13.626985   4.303261
  13  13.634724   1.903644
  19  15.960787  18.295842
  17  16.178757   1.618921
  14  17.131918   5.370007
  8   17.659915  14.749284
  2   17.667276  19.944927
  4   18.117436   1.924418
  16  19.360616   4.833260
  9   19.419893  16.906275
  21  32.000000  32.000000
  30  46.721647  47.579620
  24  47.037481  58.067666
  37  47.041261  49.745445
  33  48.340455  56.658117
  29  48.550545  52.604374
  23  49.261857  46.933329
  27  53.141933  50.356975
  35  53.758462  47.410978
  25  54.520715  63.751819
  36  54.928822  57.936303
  22  54.984661  57.584271
  32  55.168681  54.356549
  39  55.644641  48.609097
  26  55.715000  52.224896
  38  57.922253  62.811781
  28  58.841785  51.785899
  31  61.467844  61.135294
  41  62.695972  45.378379
  40  62.931873  49.761754
  34  63.693611  64.992095
  42  77.000000  77.000000
  50  90.609768  97.506675
  44  91.020031  90.244383
  55  91.137912  96.011707
  61  91.397239 108.294665
  54  91.889118  99.056465
  47  92.737411 106.473752
  43  93.466673  98.181285
  49  95.869575 104.302920
  60  98.656112  94.020177
  51 100.751787 109.526907
  56 101.063894  94.348411
  58 101.414849  93.085549
  45 102.129438  94.385133
  57 103.216284  91.409923
  48 105.242092 102.235231
  59 106.450540  93.623984
  53 106.742784 109.760631
  46 108.038967 100.258215
  52 108.553941  92.189376
  62 109.632530  93.982546    
  </code></pre>
  
  <p>I need the leftmost numbers to be sequential so that the data frame can work with a later if statement but I can't find a way to implement that. I want the leftmost numbers to reflect their current order and not the place they were before being ordered.</p>