title: How to plot multiple lines with horizontal error bars from a dataframes using ggplot2 [in R]?
body: <p>I am using this : </p>
  
  <p><a href="http://www.cookbook-r.com/Graphs/Plotting_means_and_error_bars_(ggplot2)/" rel="nofollow noreferrer">http://www.cookbook-r.com/Graphs/Plotting_means_and_error_bars_(ggplot2)/</a></p>
  
  <p>tutorial to plot multiple line graphs by grouping the data from a data frame. Data looks like this:</p>
  
  <pre><code>&gt; all
       y         x       err lab
  1   -41.93 5.7696373 0.9120865  he
  2   -41.68 5.6345447 0.9100468  he
  3   -41.43 5.4954702 0.9068282  he
  4   -41.18 5.3588358 0.9054044  he
  ...
  471  15.72 4.3701857 0.5170079  te
  472  15.97 4.5128508 0.5262806  te
  473  16.22 4.6592179 0.5320847  te
  474  16.47 4.8052565 0.5397946  te
  475  16.72 4.9518592 0.5465613  te
  476  16.97 5.1057900 0.5504546  te
  477  17.22 5.2503157 0.5602737  te
  478  17.47 5.4000783 0.5711784  te
  479  17.72 5.5506885 0.5830945  te
  480  17.97 5.7085180 0.6109026  te
  </code></pre>
  
  <p>And i am using following line to plot the graph:</p>
  
  <pre><code>ggplot(all, aes(x,y, colour=lab, group=lab)) + geom_errorbarh(aes(xmin=x-err, xmax=x+err)) + geom_line() + geom_point()
  </code></pre>
  
  <p>What I got is as follows:</p>
  
  <p><a href="https://i.stack.imgur.com/gd8oV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gd8oV.png" alt="enter image description here"></a></p>
  
  <p>I just want to fix remove the vertical lines. They should look lien two separate lines (each colour) and with their own horizontal error bars. </p>
  
  <p>What should I correct in ggplot function?
  Thanks a lot!</p>
  
  <p>Data</p>
  
  <pre><code>all &lt;- structure(list(y = c(-41.93, -41.68, -41.43, -41.18, 15.72, 15.97, 
  16.22, 16.47, 16.72, 16.97, 17.22, 17.47, 17.72, 17.97), x = c(5.7696373, 
  5.6345447, 5.4954702, 5.3588358, 4.3701857, 4.5128508, 4.6592179, 
  4.8052565, 4.9518592, 5.10579, 5.2503157, 5.4000783, 5.5506885, 
  5.708518), err = c(0.9120865, 0.9100468, 0.9068282, 0.9054044, 
  0.5170079, 0.5262806, 0.5320847, 0.5397946, 0.5465613, 0.5504546, 
  0.5602737, 0.5711784, 0.5830945, 0.6109026), lab = structure(c(1L, 
  1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("he", 
  "te"), class = "factor")), .Names = c("y", "x", "err", "lab"), class = "data.frame", row.names = c("1", 
  "2", "3", "4", "471", "472", "473", "474", "475", "476", "477", 
  "478", "479", "480"))
  </code></pre>