title: Horizontal(sideways) histogram - gnuplot
body: <p>My question is is there a way to make a <a href="https://stackoverflow.com/questions/7774402/how-to-plot-a-horizontal-histogram-in-matlab">horizontal</a> histogram in gnuplot?
  The following is a made up dataset for a histogram plot:</p>
  
  <pre><code>sample  M   N   O   P   Q   R   S   T   Total
  A   39.17   8.33    11.07   8.57    22.20   22.93   1.47    1.13    114.87
  B   61.68   15.53   16.23   15.55   35.68   36.35   2.32    2.23    185.58
  C   30.20   7.35    7.55    7.48    16.90   17.50   1.18    1.10    89.25
  D   12.57   5.18    4.98    5.77    9.88    8.18    0.67    0.83    48.07
  E   36.80   9.00    11.07   9.43    21.43   22.63   0.93    1.03    112.33
  F   62.05   15.57   15.95   15.70   35.68   36.63   2.27    2.47    186.32
  G   30.23   7.33    7.55    7.48    17.10   17.68   1.10    1.25    89.70
  H   12.97   4.87    5.22    5.18    10.37   7.90    0.98    0.70    48.18
  I   17.67   12.80   9.40    5.67    32.47   18.53   1.13    0.63    98.30
  J   72.30   13.70   17.43   15.43   30.62   38.43   2.25    2.43    192.60
  K   25.70   7.58    12.45   4.60    19.30   18.88   1.10    0.80    90.40
  L   16.15   3.80    3.53    10.43   7.27    8.80    0.88    1.10    51.97
  </code></pre>
  
  <p>I adapted the code from <a href="http://gnuplot.sourceforge.net/demo_4.6/histograms.5.gnu" rel="nofollow noreferrer">here</a> to plot a histogram:</p>
  
  <pre><code>    set terminal png font "Times-Roman,9" 
      set output 'sample.png'
      set border 3 front linetype -1 linewidth 1.000
      set boxwidth 0.85 absolute
      set style fill   solid 1.00 border lt -1
      set grid nopolar
      set grid noxtics nomxtics ytics nomytics noztics nomztics \
      nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
      set grid layerdefault   linetype 0 linewidth 1.000,  linetype 0 linewidth 1.000
      set key outside right top vertical Left reverse noenhanced autotitles columnhead nobox
      set key invert samplen 4 spacing 1 width 0 height 0 
      set style histogram rowstacked title  offset character 0, 0, 0
      set datafile missing '-'
      set style data histograms
      #set style histogram gap 1
      set xtics border in scale 0,0 nomirror rotate by -45  offset character 0, 0, 0 autojustify
      set xtics  norangelimit font ",8"
      set xtics   ()
      #set noytics
      set ylabel "% of total" 
      set yrange [ 0 : 100 ] #noreverse nowriteback
      plot 'sample.txt' using (100.*$2/$10):xtic(1) t column(2), for [i=3:9] '' using (100.*column(i)/column(10)) title column(i)
  </code></pre>
  
  <p>This gives me:</p>
  
  <p><img src="https://i.stack.imgur.com/YKtFo.png" alt="Histogram"></p>
  
  <p>Is there a way in gnuplot to make it go sideways?</p>