title: Gnuplot rowstacked histogram plot with black and white hatch patterns
body: <p>I have to create Graphs like this image below, I tried to use gnuplot and zplot to create this, but the patterns are not as expected. Did someone know some library or anything to create this pattern(as image bellow). I appreciate for that. Thanks</p>
  
  <p><img src="https://i.stack.imgur.com/knsiN.png" alt="enter image description here"></p>