下面这两张是我用gnuplot画的两个数据图，第一个图是曲线图，表示不同协议吞吐量的一个对比。第二个图横向对比的柱状图。个人觉得还是满精美的。本人也是从PDQ这篇论文的一个作者的主要上看到的这个画图方法，并做了一些改进。下面直接将画图的将本放出来。GNUPLOT脚本我也不作解释了，因为我也只是会用而已。主要是利用了cairo-pdf这个库。
第一个图的脚本：这个脚本输出的是pdf文件，如果要输出png，则要将set term pdfcairo的改成set term pngcairo。
# Note you need gnuplot 4.4 for the pdfcairo terminal.
set term pdfcairo enhanced mono font "/usr/share/fonts/simsun.ttc,18" linewidth 2 size 640,480
# Line style for axes
set style line 80 lt rgb "#000000" lw 5
#:set size 0.75,1
# Line style for grid
set style line 81 lt 0 # dashed
set style line 81 lt rgb "#000000" # grey
set grid back linestyle 81
#set border 3 back linestyle 80 # Remove border on top and right. These
# borders are useless and make it harder
# to see plotted lines near the border.
# Also, put it in grey; no need for so much emphasis on a border.
#set xtics 333.0
#set ytics nomirror
#set log x 2
#set mxtics 2 # Makes logscale look good.
set ytics 200
# Line styles: try to pick pleasing colors, rather
# than strictly primary colors or hard-to-see colors
# like gnuplot's default yellow. Make the lines thick
# so they're easy to see in small plots in papers.
#mono line
set style line 1 lt rgb "#1C1C1C" lw 1 pt 9 pointsize 2
set style line 2 lt rgb "#363636" lw 1 pt 11 pointsize 2
set style line 3 lt rgb "#4F4F4F" lw 1 pt 1 pointsize 2
set style line 4 lt rgb "#696969" lw 1 pt 2 pointsize 2
#set style line 1 lt rgb "#00A000" lw 2 pt 9 pointsize 1
#set style line 2 lt rgb "#A00000" lw 2 pt 11 pointsize 1
#set style line 3 lt rgb "#5060D0" lw 2 pt 1 pointsize 1
#set style line 4 lt rgb "#F25900" lw 2 pt 2 pointsize 1
set style line 5 lt rgb "#A00000" lw 1 pt 8 pointsize 0.5
set style line 6 lt rgb "#00A000" lw 1 pt 2 pointsize 0.5
set style line 7 lt rgb "#5060D0" lw 1 pt 4 pointsize 0.5
set style line 8 lt rgb "#F25900" lw 1 pt 6 pointsize 0.5
set output "16.pdf"
set xlabel "服务器数量" font ",20"
set ylabel "应用层吞吐量 (Mbps)" font ",20" offset 1.5,0,0
#set key horizontal samplen 2.5 bot center out
#set key box linestyle 1 samplen 1 spacing 1 horizontal
#set key box linestyle 1 inside center center Left reverse samplen 2 spacing 1 horizontal font "Arial,18" width 0.95 nobox
set key at 180,800 font ",20" height 0.9 width 0.5 spacing 1
set key box
set xrange [0:250]
set yrange [0:1000]
plot "DC16" u 1:2 title " DCTCP" w lp ls 3,"TCP16" u 1:2 t "TCP" w lp ls 4,"RS16" u 1:2 title "RS" w lp ls 2,"ARS16" u 1:2 title "ARS" w lp ls 1
第二个图的脚本：
set term pdfcairo font ",20" linewidth 2 fontscale 1.0 size 800,600
# Line style for axes
set style line 80 lt rgb "#000000"
#:set size 0.75,1
# Line style for grid
set style line 81 lt 0 # dashed
set style line 81 lt rgb "#000000" # grey
set grid back linestyle 81
#set border 3 back linestyle 80 # Remove border on top and right. These
# borders are useless and make it harder
# to see plotted lines near the border.
# Also, put it in grey; no need for so much emphasis on a border.
#set xtics 333.0
#set ytics nomirror
#set log x 2
#set mxtics 2 # Makes logscale look good.
# Line styles: try to pick pleasing colors, rather
# than strictly primary colors or hard-to-see colors
# like gnuplot's default yellow. Make the lines thick
# so they're easy to see in small plots in papers.
set style line 1 lt rgb "#1C1C1C" lw 1 pt 9 pointsize 2
set style line 2 lt rgb "#363636" lw 1 pt 11 pointsize 2
set style line 3 lt rgb "#4F4F4F" lw 1 pt 1 pointsize 2
set style line 4 lt rgb "#696969" lw 1 pt 2 pointsize 2
#set style line 1 lt rgb "#A00000" lw 1 pt 7 pointsize 0.5
#set style line 2 lt rgb "#00A000" lw 1 pt 9 pointsize 0.5
#set style line 3 lt rgb "#5060D0" lw 1 pt 5 pointsize 0.5
#set style line 4 lt rgb "#F25900" lw 1 pt 13 pointsize 0.5
set style line 5 lt rgb "#A00000" lw 1 pt 8 pointsize 0.5
set style line 6 lt rgb "#00A000" lw 1 pt 2 pointsize 0.5
set style line 7 lt rgb "#5060D0" lw 1 pt 4 pointsize 0.5
set style line 8 lt rgb "#F25900" lw 1 pt 6 pointsize 0.5
set style fill pattern 1 border
set style histogram clustered gap 1 title offset character 0, 0, 0
set style data histograms
set output "bg16.pdf"
set xlabel "背景流速率(Mbps)" font "Helvetica,20"
set ylabel "应用层吞吐量 (Mbps)" font "Helvetica,20" offset 1.5,0,0
#set key samplen 2 width 2 box 4 top right
set key samplen 2 font ",20" top right box width 2 height 0.5 spacing 1
#set key at 0.5,0.5
#set key 0.01,100
#set xrange [0:1000]
set yrange [0:1000]
plot '1.dat.16' using 5:xtic(1) ti col lw 1.5 lc rgb "#1C1C1C" fill pattern 1 ,'' u 4 ti col lw 1.5 lc rgb "#363636" fill pattern 2,'' u 3 ti col lw 1.5 lc rgb "#4F4F4F" fill pattern 5,'' u 2 ti col lw 1.5 lc rgb "#696969" fill pattern 4
#第一个using要倒过来写。