Simple gnuplot histogram example
The gnuplot histogram style wont automagically bin your data. To do this you need to either use an external program, or add some additional code, here a simple example:
set terminal png set output "hist.png" set boxwidth 1 set style fill solid set style histogram set style data histogram bw=1 bin(x,width)=width*floor(x/width) + bw/2.0 plot "test.dat" using (bin($1,bw)):(1.0) smooth freq with boxes
Using this data file:
1 2 3 4 5 5 5 5 5 5 5 5 5 5 5 7 8 9 10
You should see this output:
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