我是 TeX 图表绘制新手。我有两个主要问题：1. 假设我想写$L(s,\chi)$“Dirichlet L-function”，则会出错。问题似乎出在“，”上，因为如果我写的话，$L(s \chi)$ 就不会出错。
- 由于某种原因，我无法用 来
$\mathbb{C}$表示复数。相反，我必须写“C”。
这是我的代码：
% Hierarchical diagram
% Author: cfr
\documentclass[tikz,border=10pt]{standalone}
\usepackage{forest}
\usetikzlibrary{arrows.meta, shapes.geometric, calc, shadows}
\colorlet{mygreen}{green!75!black}
\colorlet{col1in}{red!30}
\colorlet{col1out}{red!40}
\colorlet{col2in}{mygreen!40}
\colorlet{col2out}{mygreen!50}
\colorlet{col3in}{blue!30}
\colorlet{col3out}{blue!40}
\colorlet{col4in}{mygreen!20}
\colorlet{col4out}{mygreen!30}
\colorlet{col5in}{blue!10}
\colorlet{col5out}{blue!20}
\colorlet{col6in}{blue!20}
\colorlet{col6out}{blue!30}
\colorlet{col7out}{orange}
\colorlet{col7in}{orange!50}
\colorlet{col8out}{orange!40}
\colorlet{col8in}{orange!20}
\colorlet{linecol}{blue!60}
\newcommand{\CC}{\mathbb{C}}
\begin{document}
\pgfkeys{/forest,
rect/.append style = {rectangle, rounded corners = 2pt,
inner color = col6in, outer color = col6out},
ellip/.append style = {ellipse, inner color = col5in,
outer color = col5out},
orect/.append style = {rect, font = \sffamily\bfseries\LARGE,
text width = 325pt, text centered,
minimum height = 10pt, outer color = col7out,
inner color=col7in},
oellip/.append style = {ellip, inner color = col8in, outer color = col8out,
font = \sffamily\bfseries\large, text centered}}
\begin{forest}
for tree={
font=\sffamily\bfseries,
line width=1pt,
draw=linecol,
ellip,
align=center,
child anchor=north,
parent anchor=south,
drop shadow,
l sep+=12.5pt,
edge path={
\noexpand\path[color=linecol, rounded corners=5pt,
>={Stealth[length=10pt]}, line width=1pt, ->, \forestoption{edge}]
(!u.parent anchor) -- +(0,-5pt) -|
(.child anchor)\forestoption{edge label};
},
where level={3}{tier=tier3}{},
where level={0}{l sep-=15pt}{},
where level={1}{
if n={1}{
edge path={
\noexpand\path[color=linecol, rounded corners=5pt,
>={Stealth[length=10pt]}, line width=1pt, ->,
\forestoption{edge}]
(!u.west) -| (.child anchor)\forestoption{edge label};
},
}{
edge path={
\noexpand\path[color=linecol, rounded corners=5pt,
>={Stealth[length=10pt]}, line width=1pt, ->,
\forestoption{edge}]
(!u.east) -| (.child anchor)\forestoption{edge label};
},
}
}{},
}
[Dirichlet L-functions, inner color=col1in, outer color=col1out
[Functional equation of\\ Dirichlet L-functions, inner color=col2in, outer color=col2out
[Counting the zeros of\\ Dirichlet L-functions, inner color=col3in, outer color=col3out
[Trivial zeros, inner color=col7in, outer color=col7out
[$-2n$ $\in N$ \\(even characters), inner color=red, outer color=red
]
[$-2n+1 \in N$ \\ (odd characters), inner color=red, outer color=red
]
]
[Non-trivial zeros, inner color=col7in, outer color=col7out
[Approximation $\#$ zeros $\rho \in C$ \\ with $0 \leq \Re(\rho) \leq 1$ \\ $|\Im(\rho)|\leq T$, inner color=red, outer color=red
[Link between zeros of\\ $\zeta(s)$ and behavior of $\pi(x)$, inner color=magenta, outer color=magenta
]
]
]
]
]
% [Fonctional equation of\\ $L(s \chi)$, inner color=col3in, outer color=col3out
% [, phantom, calign with current
% [A\\B, phantom
% [Our Work, orect, name=us
% ]
% ]
% ]
% ]
]
\begin{scope}[color = linecol, rounded corners = 5pt]
\end{scope}
\end{forest}
\end{document}
答案1
我认为通常最好在选项的第一个块中用括号括起来[，这样文本中的逗号就不会被误认为是选项分隔符。
或者，只用括号括住逗号部分，因此
{$L(s,\chi)$}
以下是示例
% Hierarchical diagram
% Author: cfr
\documentclass[tikz,border=10pt]{standalone}
\usepackage{forest}
\usetikzlibrary{arrows.meta, shapes.geometric, calc, shadows}
\colorlet{mygreen}{green!75!black}
\colorlet{col1in}{red!30}
\colorlet{col1out}{red!40}
\colorlet{col2in}{mygreen!40}
\colorlet{col2out}{mygreen!50}
\colorlet{col3in}{blue!30}
\colorlet{col3out}{blue!40}
\colorlet{col4in}{mygreen!20}
\colorlet{col4out}{mygreen!30}
\colorlet{col5in}{blue!10}
\colorlet{col5out}{blue!20}
\colorlet{col6in}{blue!20}
\colorlet{col6out}{blue!30}
\colorlet{col7out}{orange}
\colorlet{col7in}{orange!50}
\colorlet{col8out}{orange!40}
\colorlet{col8in}{orange!20}
\colorlet{linecol}{blue!60}
\newcommand{\CC}{\mathbb{C}}
\begin{document}
\pgfkeys{/forest,
rect/.append style = {rectangle, rounded corners = 2pt,
inner color = col6in, outer color = col6out},
ellip/.append style = {ellipse, inner color = col5in,
outer color = col5out},
orect/.append style = {rect, font = \sffamily\bfseries\LARGE,
text width = 325pt, text centered,
minimum height = 10pt, outer color = col7out,
inner color=col7in},
oellip/.append style = {ellip, inner color = col8in, outer color = col8out,
font = \sffamily\bfseries\large, text centered}}
\begin{forest}
for tree={
font=\sffamily\bfseries,
line width=1pt,
draw=linecol,
ellip,
align=center,
child anchor=north,
parent anchor=south,
drop shadow,
l sep+=12.5pt,
edge path={
\noexpand\path[color=linecol, rounded corners=5pt,
>={Stealth[length=10pt]}, line width=1pt, ->, \forestoption{edge}]
(!u.parent anchor) -- +(0,-5pt) -|
(.child anchor)\forestoption{edge label};
},
where level={3}{tier=tier3}{},
where level={0}{l sep-=15pt}{},
where level={1}{
if n={1}{
edge path={
\noexpand\path[color=linecol, rounded corners=5pt,
>={Stealth[length=10pt]}, line width=1pt, ->,
\forestoption{edge}]
(!u.west) -| (.child anchor)\forestoption{edge label};
},
}{
edge path={
\noexpand\path[color=linecol, rounded corners=5pt,
>={Stealth[length=10pt]}, line width=1pt, ->,
\forestoption{edge}]
(!u.east) -| (.child anchor)\forestoption{edge label};
},
}
}{},
}
[{Dirichlet L-functions}, inner color=col1in, outer color=col1out
[{Functional equation of\\ Dirichlet L-functions}, inner color=col2in, outer color=col2out
[{Counting the zeros of\\ Dirichlet L-functions}, inner color=col3in, outer color=col3out
[{Trivial zeros}, inner color=col7in, outer color=col7out
[{$-2n$ $\in N$ \\(even characters)}, inner color=red, outer color=red
]
[{$-2n+1 \in N$ \\ (odd characters)}, inner color=red, outer color=red
]
]
[{Non-trivial zeros}, inner color=col7in, outer color=col7out
[{Approximation $\#$ zeros $\rho \in C$ \\ with $0 \leq \Re(\rho) \leq 1$ \\ $|\Im(\rho)|\leq T$}, inner color=red, outer color=red
[{Link between zeros of\\ $\zeta(s)$ and behavior of $\pi(x)$}, inner color=magenta, outer color=magenta
]
]
]
]
]
[{Functional equation of\\ $L(s,\chi)$}, inner color=col3in, outer color=col3out
[, phantom, calign with current
[{A\\B}, phantom
[{Our Work}, orect, name=us
]
]
]
]
]
\begin{scope}[color = linecol, rounded corners = 5pt]
\end{scope}
\end{forest}
\end{document}
对于\mathbb{C}您需要\usepackage{amsfonts}或（更好）\usepackage{amssymb}。