title: Gnuplot barchart histogram with errorbars
body: <p>I want to the results of my benchmarks. I compare two virtual machines with each other
  and have data of the following form:</p>
  
  <p>BENCHMARK    VM1_TIME    VM1_ERROR    VM2_TIME    VM2_ERROR</p>
  
  <p>I want to generate a barchart diagram from this data which should look like this:</p>
  
  <p><img src="https://i.stack.imgur.com/QeJ1K.png" alt="Gnuplot sketch"></p>
  
  <p>Could somebody provide the code how to do this?
  I know this kind of request is unbeloved, but I really need this and googled for something
  like 2 hours, without a satisfactoring result.</p>
  
  <p><br />
  Thanks in advance,<br />
  Sven</p>