I have a data-set that consist of edges and colors, and I want to plot them on a web-like manner, with lines and circles such as the picture below, and possibly with cluster coloring.
The data is organized like this:
point1a_x point1a_y color
point1b_x point1b_y color
point2a_x point2a_y color
point2b_x point2b_y color
(...)
point2n_x point2n_y color
point2n_x point2n_y color
How would I go about doing it on gnuplot?
Okay, so I figured it out myself and I'll leave the details here to help anyone with the same questions.
Single color graph with labels on the nodes:
This will generate a graph much like the one on the question, with lines connecting circles with labels inside.
plot 'edges.dat' u 1:2 with lines lc rgb "black" lw 2 notitle,\
'edges.dat' u 1:2:(0.6) with circles fill solid lc rgb "black" notitle,\
'edges.dat' using 1:2:($0) with labels tc rgb "white" offset (0,0) font 'Arial Bold' notitle
With little changes it can exaclty match the one on the question picture.
plot 'edges.dat' u 1:2 with lines lc rgb "black" lw 2 notitle,\
'edges.dat' u 1:2:(0.8) with circles linecolor rgb "white" lw 2 fill solid border lc lt 0 notitle, \
'edges.dat' using 1:2:($0) with labels offset (0,0) font 'Arial Bold' notitle
Cluster-colored graph:
unset colorbox
set palette model RGB defined ( 0 0 0 0 , 1 1 0 0 , 2 1 0.9 0, 3 0 1 0, 4 0 1 1 , 5 0 0 1 , 6 1 0 1 )
plot 'edges.dat' u 1:2:3 with lines lc palette notitle,\
'edges.dat' u 1:2:(0.15):3 with circles fill solid palette notitle
The data used on all plots follow this structure:
21.53 9.55 0
24.26 7.92 0
5.63 3.23 1
2.65 1.77 1
5.63 3.23 0
4.27 7.04 0
(...)