我正在努力适应如何创建多行时间线就我的情况来说。
如果我尝试获取 x 值（年）的更大缩放因子，即从 0.28 到任何更高的值
\pgfmathsetmacro\yearscale{0.28} % scaling factor for x-values (years)
我收到此错误：
Dimension too large.
myfile.tex, 77
<recently read> \pgf@xx
l.77 }
I can't work with sizes bigger than about 19 feet.
Continue and I'll use the largest value I can.
我该如何解决这个错误？
这是代码和结果图（x 值（年份）的缩放因子等于 0.28）：
\documentclass{article}
\usepackage{tikz, pgfplotstable}
\usetikzlibrary{arrows.meta}
\usepackage[utf8]{inputenc}
% read in table
\pgfplotstableread[col sep=comma]{
label,startyear,endyear
A , 2011 , 2012
B , 2016 , 2018
C, 2018 , 2022
}\authors
\pgfplotstableread[col sep=comma]{
label,startyear,endyear
D , 2003 , 2008
E , 2008 , 2011
F , 2012 , 2014
G , 2013 , 2017
}\events
% add color columns
\pgfplotstablecreatecol[create col/set={blue!30}]{color}{\authors}
\pgfplotstablecreatecol[create col/set={red!30}]{color}{\events}
% append events table to authors table
\pgfplotstablevertcat{\authors}{\events}
% sort by startyear
\pgfplotstablesort[sort key=startyear]\sortedtable\authors
\begin{document}
% if you want to look at the table
%\pgfplotstabletypeset[
% columns/label/.style={string type},
% columns/color/.style={string type}
%]\sortedtable
\noindent\begin{tikzpicture}
\pgfmathsetmacro\yearscale{0.28} % scaling factor for x-values (years)
\pgfmathsetmacro\yscale{0.3} % scaling for y-direction -- effectively vertical distance between bars
\pgfmathsetmacro\barheight{0.25} % height of bars
\pgfplotstablegetrowsof{\sortedtable}
\pgfmathsetmacro{\M}{\pgfplotsretval-1}
\pgfplotstablegetcolsof{\sortedtable}
\pgfmathsetmacro{\N}{\pgfplotsretval-1}
\foreach [count=\i,evaluate=\i as \ylevel using \i*\yscale] \row in {0,...,\M}{
% get entries from table row
\pgfplotstablegetelem{\row}{[index]0}\of\sortedtable
\xdef\txt{\pgfplotsretval}
\pgfplotstablegetelem{\row}{[index]1}\of\sortedtable
\xdef\xstart{\pgfplotsretval}
\pgfplotstablegetelem{\row}{[index]2}\of\sortedtable
\xdef\xend{\pgfplotsretval}
\pgfplotstablegetelem{\row}{[index]3}\of\sortedtable
\xdef\barcolor{\pgfplotsretval}
\xdef\TheLastY{\ylevel}
\ifnum \xend=-1
% single day entry, draw circle
\filldraw [draw=black!99!\barcolor,fill=\barcolor] (\xstart*\yearscale,-\ylevel) circle[radius=\barheight/2.5] node[black,right=3pt,font=\scriptsize] {\txt};
\else
% interval, draw a rectangle
\fill [\barcolor] (\xstart*\yearscale,-\ylevel-\barheight/2) rectangle (\xend*\yearscale,-\ylevel+\barheight/2);
% add text label right of the rectangle
\node [right,font=\scriptsize] at (\xend*\yearscale,-\ylevel) {\txt};
\fi
}
\draw [Stealth-Stealth]
(2003*\yearscale,0)
-- (2003*\yearscale,-\TheLastY-\yscale)
-- (2023*\yearscale,-\TheLastY-\yscale);
% add ticks on x-axis
\foreach \year in {2003,2004,...,2022}
\draw (\year*\yearscale,-\TheLastY-\yscale) ++(0,3pt) -- ++(0,-6pt) node[below] {\year};
\end{tikzpicture}
\end{document}
答案1
我建议
2000每年减去- 并使用
x键（最初x = 1cm）来缩放整个图片，而不是使用\yearscale宏。
我还改变了一些\xdefs，\let因为它们不需要全局定义。
代码
\documentclass{article}
\usepackage{tikz, pgfplotstable}
\usetikzlibrary{arrows.meta}
\usepackage[utf8]{inputenc}
% read in table
\pgfplotstableread[col sep=comma]{
label,startyear,endyear
A, 2011, 2012
B, 2016, 2018
C, 2018, 2022
}\authors
\pgfplotstableread[col sep=comma]{
label,startyear,endyear
D, 2003, 2008
E, 2008, 2011
F, 2012, 2014
G, 2013, 2017
}\events
% add color columns
\pgfplotstablecreatecol[create col/set={blue!30}]{color}{\authors}
\pgfplotstablecreatecol[create col/set={red!30}]{color}{\events}
% append events table to authors table
\pgfplotstablevertcat{\authors}{\events}
% sort by startyear
\pgfplotstablesort[sort key=startyear]\sortedtable\authors
\begin{document}
\noindent\begin{tikzpicture}[x=7mm]
\pgfmathsetmacro\yscale{0.3} % scaling for y-direction
% -- effectively vertical distance between bars
\pgfmathsetmacro\barheight{0.25} % height of bars
\pgfplotstablegetrowsof{\sortedtable}
\pgfmathsetmacro{\M}{\pgfplotsretval-1}
\foreach [count=\i,evaluate=\i as \ylevel using \i*\yscale] \row in {0,...,\M}{
% get entries from table row
\pgfplotstablegetelem{\row}{[index]0}\of\sortedtable
\let\txt\pgfplotsretval
\pgfplotstablegetelem{\row}{[index]1}\of\sortedtable
\let\xstart\pgfplotsretval
\pgfplotstablegetelem{\row}{[index]2}\of\sortedtable
\let\xend\pgfplotsretval
\pgfplotstablegetelem{\row}{[index]3}\of\sortedtable
\let\barcolor\pgfplotsretval
\xdef\TheLastY{\ylevel}
\ifnum \xend=-1
% single day entry, draw circle
\filldraw [draw=black!99!\barcolor,fill=\barcolor] (\xstart-2000,-\ylevel)
circle[radius=\barheight/2.5*1cm]
node[black,right=3pt,font=\scriptsize] {\txt};
\else
% interval, draw a rectangle
\fill [\barcolor] (\xstart-2000,-\ylevel-\barheight/2) rectangle
(\xend-2000,-\ylevel+\barheight/2);
% add text label right of the rectangle
\node [right,font=\scriptsize] at (\xend-2000,-\ylevel) {\txt};
\fi
}
\draw [Stealth-Stealth] (2003-2000,0) -- (2003-2000,-\TheLastY-\yscale)
-- (2023-2000,-\TheLastY-\yscale);
% add ticks on x-axis
\foreach \year in {2003, 2004, ..., 2022}
\draw (\year-2000,-\TheLastY-\yscale) ++(0,3pt)
-- ++(0,-6pt) node[below] {\year};
\end{tikzpicture}
\end{document}