在图片环境中用专色，线条相对于原始图片移动。
要将rgb颜色更改为cymk黑色或所需的 pantone，我引入了
\special{ps: XC@PANTONE7473C 1 setcolor}
彩色线条和
\special{color cmyk 0 0 0 1}
表示黑线。
这是原始文件和更改后的文件之间的区别：
注意函数线和虚线是如何从其原始位置移动的。这可能与问题有关dvips 的“ps:”特殊功能会改变标准 PostScript (bp) 单位吗？，但我无法使用问题中的信息进行修复。special上面提到的任何一行都会产生错误。还有其他方法可以使用这些颜色吗？
pdf 的生成方式如下：
latex rectan2_standalone.tex
dvips -h tex.pro -h xcolor.pro -h spot_color.pro rectan2_standalone.dvi
ps2pdf rectan2_standalone.ps
pdfcrop rectan2_standalone.pdf
这是生成图像的latex文件rectan2_standalone.tex
\begin{filecontents*}{spot_color.pro}
TeXDict begin
/PANTONE7473CCMYK [0.76 0.06 0.44 0.08] def
/PANTONE (PANTONE7473C) def
/PANTONE7473CDef PANTONE7473CCMYK aload pop PANTONE findcmykcustomcolor def
/XC@PANTONE7473C{PANTONE7473CDef 1.0 setcustomcolor}XCdef
end
\end{filecontents*}
\documentclass{article}
\usepackage{colordvi}
\begin{document}
\thispagestyle{empty}
\input{rectan2_transformcolors.tec}
\end{document}
这是图片rectan2_transformcolors.tec
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答案1
由于缺少%行尾，因此添加了空白并替换了图片模式构造。
所有图片模式命令都用于\ignorespaces忽略后面的空白并\unskip删除前面的空白，但如果插入\special基元（甚至简单{}），那么您需要注意不要同时添加空白。