Unable to plot bargraph using gnuplot

Question

I'm seeing an issue while plotting the bar graph using gnuplot. Im using gnuplot version 4.6 on Windows 7. I'm seeing an error message ";" expected.

Here is the logic:

# bar graph
#set title "Programming language"
set xlabel "Programming"
set ylabel "Execution time"
set auto x
set yrange [0:120]
set style data histogram
set style histogram cluster gap 1
set style fill solid border -1
set boxwidth 0.9
set xtic scale 0
plot 'bar-graph.dat' using 2:xtic(1) title "Python" col fc rgb "#4671d5", '' u 3 title "Java" col fc rgb "#ff0000", '' u 4 title "C++" col fc rgb "#f36e00"
                                                                                                                              ^
         ';' expected

Here is the data:

"Python"         50   70     66.5
"Java"           30   50     48
"C++"            10   20    14.8

I wanted to plot a joined bar graph similar to Microsoft Excel. Please let me know what I'm missing.

Thanks, Anand

Answer 1

You are using the wrong syntax to set the line color. There is no col option. Just use lc rgb "#467165":

plot 'bar-graph.dat' using 2:xtic(1) title "Python" lc rgb "#4671d5", '' u 3 title "Java" lc rgb "#ff0000", '' u 4 title "C++" lc rgb "#f36e00"

And please give your plot more meaningful labels. Having a 'python' group with a bar 'python' isn't self-explaining.