title: Aesthetics must be either length 1 or the same as the data issue is ggplot
body: <p>I am trying to plot a line graph in ggplot. But I am geeting this error: </p>
  
  <pre><code>Aesthetics must be either length 1 or the same as the data (9): y, x, group 
  </code></pre>
  
  <p>This graph contains 4 lines. I have one more graph which makes use of same data frame but different two columns. I dont understand why that graph is working properly but this graph is not. I tried all possible answers I found.But nothing is working. Other graph is made using <code>expkm</code> and <code>actualkm</code> with dates at x axis.</p>
  
  <pre><code>pred &lt;- ggplot(data_, aes(x= data_$dates, group=1)) +
      geom_point(aes(y = data_$exp))+
      geom_point(aes(y = data_$facc))+
      geom_point(aes(y = data_$cntrmlg))+
      geom_point(aes(y = data_$top10rem))+
      geom_line(aes(y = data_$exp, color='Expected')) + 
      geom_line(aes(y = data_$facc, color='Actual'))+
      geom_line(aes(y = data_$cntrmlg, color='status'))+
      geom_line(aes(y = data_$top10rem, color='Statusy'))+
      geom_label(aes(y = data_$exp,label = data_$exp,hjust = 0,vjust = -0.2))+
      geom_label(aes(y = data_$facc,label = data_$facc,hjust = 0,vjust = 0.2 ))+
      geom_label(aes(y = data_$cntrmlg,label = data_$cntrmlg,hjust = 0,vjust = -0.2))+
      geom_label(aes(y = data_$top10rem,label = data_$top10rem,hjust = 0,vjust = 0.2 ))+
      labs(title = "Reli")+
      labs(x="Dates")+
      labs(y="")+
      guides(color = guide_legend(title = ""))
  </code></pre>
  
  <p>Sample data :</p>
  
  <pre><code>     expkm
      50000
      100000
      112500
      137500
      150000
      162500
      187500
      187500
      187500
  
     actualkm dates  exp      facc        cntrmlg     top10rem
      26013   Dec-17  32660   26013       50000       26013
      56796   Jan-18  46188   13802       75000       41405
      52689   Feb-18  56569   19357       87500       45166
      64657   Mar-18  65320   25019       100000      50039
      79445   Apr-18  73030   21508       91667       46600
      92647   May-18  80000   19592       101786      53178
      121944  Jun-18  86410   16473       75000       41183
      125909  Jul-18  92376   15900       77679       44293
      106470  Aug-18  97980   15795       67105       38241
  </code></pre>