title: xlabel overlap in clustered histogram in gnuplot
body: <p>Here is my gnuplot script:</p>
  
  <pre><code>set terminal pngcairo font "arial,10" fontscale 1.0 size 500, 350 
  set output 'hist.png'
  set border 3 front linetype -1
  set boxwidth 0.8 absolute
  set style fill pattern
  set grid nopolar
  set key top left reverse
  set style histogram rowstacked
  set style data histograms
  set xtics nomirror font ",8"
  set ytics 2 nomirror norotate autojustify
  set ylabel font ",18" "Number of pieces used"
  set xlabel  font ",18" "Utilization" offset 0,-2
  plot newhistogram "1.3", 'input.data' using 2:xtic(1) t "used" lc rgbcolor "black" lt 1 fs pattern 4, '' u 3 t "usable" lc rgbcolor "black" lt 1  fs pattern 1, '' u 4 t "wasted" lc rgbcolor "black" lt 1  fs pattern 3, \
      newhistogram "1.5", '' u 5:xtic(1) notitle lc rgbcolor "black" lt 1 fs pattern 4, '' u 6 notitle lc rgbcolor "black" lt 1 fs pattern 1, '' u 7 notitle  lc rgbcolor "black" lt 1  fs pattern 3, \
      newhistogram "1.7", '' u 8:xtic(1) notitle lc rgbcolor "black" lt 1 fs pattern 4, '' u 9 notitle lc rgbcolor "black" lt 1 fs pattern 1, '' u 10:xtic(1) notitle  lc rgbcolor "black" lt 1  fs pattern 3, \
      newhistogram "1.8", '' u 11:xtic(1) notitle lc rgbcolor "black" lt 1 fs pattern 4, '' u 12 notitle lc rgbcolor "black" lt 1 fs pattern 1, '' u 13:xtic(1) notitle  lc rgbcolor "black" lt 1  fs pattern 3, \
      newhistogram "2.0", '' u 14:xtic(1) notitle lc rgbcolor "black" lt 1 fs pattern 4, '' u 15 notitle lc rgbcolor "black" lt 1 fs pattern 1, '' u 16:xtic(1) notitle  lc rgbcolor "black" lt 1  fs pattern 3
  </code></pre>
  
  <p>for the input file:</p>
  
  <pre><code>A 16 0 0 18 1 0 18 0 3 14 1 8 10 5 10
  B 16 0 0 17 2 0 15 6 0 9 14 0 0 25 0
  C 16 0 0 18 1 0 19 2 0 12 11 0 2 23 0
  </code></pre>
  
  <p>It generates the following figure:</p>
  
  <p><img src="https://i.stack.imgur.com/2Ep5W.png" alt="enter image description here"></p>
  
  <p>How can I make the xlabel "Utilization" be a little lower than the "1.7" label? Using <code>offset</code> moves both labels together.</p>