设置样式线的额外参数

Question

我运行以下脚本（仅显示脚本的主要部分）

# set-up
nutc = 1.0 # torque

# legend
set key top right

# 1st x axis
set xlabel 't in d^2/{/Symbol n}'
set format x "%.1f"
set xrange [0.0: 1.0]
set xtics   0.0, 0.5
set mxtics  2

# 1st y axis
set ylabel 'Nu_{/Symbol w}'
set format y "%.1f"
set yrange [-0.2:  3.0]
set ytics   -1.0,  1.0
set mytics   5

# grid lines
set nogrid

# line styles with colours appropriate for colour-blind
set style line 10 lc rgb '#000000' dt 2 lw 1.5 # black
set style line 11 lc rgb '#D55E00' dt 1 lw 1.5 # vermillon
set style line 12 lc rgb '#0072B2' dt 1 lw 1.5 # blue
set style line 13 lc rgb '#009E73' dt 1 lw 1.5 # bluish green
set style line 14 lc rgb '#E69F00' dt 1 lw 1.5 # orange
set style line 15 lc rgb '#56B4E9' dt 1 lw 1.5 # sky blue
set style line 16 lc rgb '#CC79A7' dt 1 lw 1.5 # reddish purple
set style line 17 lc rgb '#F0E442' dt 1 lw 1.5 # yellow 

# main plot
set style data lines
plot nutc t 'solution' ls 10,\
     'torque' u ($1):($2) t 'Inner' ls 11,\
     'torque' u ($1):($3) t 'Outer' ls 12

# convert to pdf (epstopdf comes with e.g. TeXlive)
system('epstopdf '.file)

运行时弹出以下错误

错误原因是什么以及如何修复？ [我想线条样式设置部分中的所有 8 行都存在同样的问题：第 43-50 行]

Answer 1

根据StackOverflow规则“评论中没有答案”，我总结一下：

您有一个相当旧的 gnuplot 版本 4.6.2 (2013)，它不允许在线条样式设置中设置 dashtype (

dt

)。也许有不同的方法或解决方法，但最简单的可能是更新到较新版本的 gnuplot，请参阅：https://sourceforge.net/projects/gnuplot/files/gnuplot/

在 gnuplot 控制台中输入

set term

，您将看到可用的终端。这就是我得到的：

Available terminal types:
       cairolatex  LaTeX picture environment using graphicx package and Cairo backend
           canvas  HTML Canvas object
              cgm  Computer Graphics Metafile
          context  ConTeXt with MetaFun (for PDF documents)
          domterm  DomTerm terminal emulator with embedded SVG
             dumb  ascii art for anything that prints text
              dxf  dxf-file for AutoCad (default size 120x80)
              emf  Enhanced Metafile format
         epscairo  eps terminal based on cairo
         epslatex  LaTeX picture environment using graphicx package
              fig  FIG graphics language V3.2 for XFIG graphics editor
              gif  GIF images using libgd and TrueType fonts
             hpgl  HP7475 and relatives [number of pens] [eject]
             jpeg  JPEG images using libgd and TrueType fonts
              lua  Lua generic terminal driver
               mf  Metafont plotting standard
               mp  MetaPost plotting standard
             pcl5  PCL5e/PCL5c printers using HP-GL/2
         pdfcairo  pdf terminal based on cairo
           pict2e  LaTeX2e picture environment
              png  PNG images using libgd and TrueType fonts
         pngcairo  png terminal based on cairo
       postscript  PostScript graphics, including EPSF embedded files (*.eps)
          pslatex  LaTeX picture environment with PostScript \specials
            pstex  plain TeX with PostScript \specials
         pstricks  LaTeX picture environment with PSTricks macros
               qt  Qt cross-platform interactive terminal
          sixelgd  sixel using libgd and TrueType fonts
              svg  W3C Scalable Vector Graphics
          texdraw  LaTeX texdraw environment
             tikz  TeX TikZ graphics macros via the lua script driver
         tkcanvas  Tk canvas widget
          unknown  Unknown terminal type - not a plotting device
          windows  Microsoft Windows
              wxt  wxWidgets cross-platform interactive terminal

根据您的目的，请勾选

help cairolatex

、

help epscairo

、

help epslatex

和

help pdfcairo

。