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    <p>This seems to work:</p> <pre><code>set style fill solid 0.5 noborder set style histogram columnstacked set style data histogram set ylabel "Time (mins)" plot "test.dat" u 2 notitle with histogram </code></pre> <p>If you want to have a key with the colors-labels in it:</p> <pre><code>set style histogram columnstacked set style data histogram set style fill solid 0.5 noborder set ylabel "Time (mins)" plot "test.dat" u 2:key(1) with histogram </code></pre> <hr> <p>After reading your edit and playing around a bit, this is still possible, but I needed to modify your datafile. (I hope that's Ok):</p> <pre><code>"Execution" 500 "foo" NaN "Overhead 1" 200 "Overhead 2" 75 </code></pre> <p>Now the plotting script:</p> <pre><code>set style histogram columnstacked set style data histogram set style fill solid 0.5 noborder set ylabel "Time (mins)" plot for [i=0:1] "test.dat" index i u ($2):key(1) with histogram </code></pre> <p>There are a bunch of subtleties here. The pair of blank records is a way to create a separate "index" for gnuplot to use when plotting. The first bar is by itself in a dataset. Here's the problem, Gnuplot will match the first record from index 0 with the first record from index 1 and plot them with the same color. That's ugly. So we need to insert a fake record in the index=1 dataset which won't make any plot, but will take up a color. That's what the <code>"foo" NaN</code> line is designed to do. I also needed to modify the <code>plot</code> line to plot both of the indexes. And the using specification needs to change from <code>2:key(1)</code> to <code>($2):key(1)</code> as there is a slight difference in how the two forms handle missing data.</p>
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    1. POShow single bar graph and a stacked bar graph in the same plot
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    1. COThanks mgilson for the answer! However, I realized that I wasn't quite clear in my question. I edited it now to clarify it. What I was trying to do in the question was to show row 1 in a single bar graph while showing row 2 and row 3 together in a stacked bar graph.
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    2. CO@dpandiar -- updated. Hopefully it does what you want now.
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    3. COPerfect! That works like a charm!I just had to manually set the xtics..
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