使用Multiplot设置GNUPLOT的线样式

Question

我准备了以下脚本来绘制多个图。如脚本所示，我预先定义了线样式。结果图中的线属性 不是像它们在脚本中定义的那样，而且我无法控制脚本的线宽和点大小。关于导致问题的什么建议？

set terminal epslatex size 15cm, 15cm
set output "Figure1.tex"
set size 1.0,1.0
set origin 0.0,0.0
set xrange [0.1:0.8]
set xtics 0.1,0.2,0.9
set logscale y
set multiplot  layout 2,2
set linestyle 1 linecolor rgb 'red' pointtype 1   pointsize 2 linewidth 5 
set linestyle 2 linecolor rgb 'green' pointtype 2 pointsize 3 linewidth 5 
set linestyle 3 linecolor rgb 'blue' pointtype 3 pointsize 3 linewidth 5 
set linestyle 4 linecolor rgb 'yellow' pointtype 4 pointsize 3 linewidth 5
set linestyle 5 linecolor rgb 'magenta' pointtype 5 pointsize 3 linewidth 5  
set linestyle 6 linecolor rgb 'web-blue' pointtype 6 pointsize 3 linewidth 5  
set linestyle 7 linecolor rgb 'black' pointtype 7 pointsize 3 linewidth 5  
unset key
set yrange [2.8:6]
set ytics add ("3" 3.0, "6" 6.0 )
set lmargin 0
plot  " file1.txt" using 1:2   with linespoint  ls 1, "file2.txt" using 1:2   
with linespoint lt 2,\
"file3.txt" using 1:2   with linespoint lt 3,"file4.txt" using 1:2  with 
 linespoint lt 4,\
 "file5.txt" using 1:2   with linespoint lt 5,\
 "file6.txt" using 1:2  with linespoint lt 6,\
 "file7.txt" using 1:2   with linespoint lt 7
  unset lmargin
  set yrange[1.2:2.5]
  set ytics add ( "1.5" 1.5,"2.5" 2.5 )
  unset ylabel
  set rmargin 0
  plot  " file1.txt" using 1:3   with linespoint  ls 1, "file2.txt" using 1:3   
  with linespoint lt 2,\
 "file3.txt" using 1:3  with linespoint lt 3,"file4.txt" using 1:3  with 
  linespoint lt 4,\
 "file5.txt" using 1:3   with linespoint lt 5,\
 "file6.txt" using 1:3  with linespoint lt 6,\
 "file7.txt" using 1:23   with linespoint lt 7
  unset margin 
  set yrange[0.1:5.0]
 set ytics add ("" 1.0, "" 1.5, "" 2.5,"3" 3.0)
 set lmargin 0
 
 plot  " file1.txt" using 1:4   with linespoint  ls 1, "file2.txt" using 
 1:4   
 with linespoint lt 2,\
"file3.txt" using 1:3  with linespoint lt 3,"file4.txt" using 1:4  with 
linespoint 
lt 4,\
"file5.txt" using 1:4   with linespoint lt 5,\
"file6.txt" using 1:4  with linespoint lt 6,\
"file7.txt" using 1:4   with linespoint lt 7 
 unset lmargin
 set yrange[0.1:5.0]
 unset ylabel 
 set  key at 0.7,3.7 maxrows 4 Left reverse 
 set rmargin 0
 plot  "file1.txt" using 1:5 title '{Ou}'  with linespoint  ls 1, "file2.txt" using 1:5 title 
'{L}'  with linespoint lt 2,\
"file3.txt" using 1:5 title '{SL}'  with linespoint lt 3,"file4.txt" using 1:5 title '{CC}'  
 with linespoint lt 4,\
 "file5.txt" using 1:5 title '{HL}'  with linespoint lt 5,\
 "file6.txt" using 1:5 title '{HS}'  with linespoint lt 6,\
  "file7.txt" using 1:5 title '{SPi}'  with linespoint lt 7
  unset margin
  unset multiplot
  set output 
  set terminal pop                                

我得到的数字是以下在此处输入图像描述。