使其看起来更像手写

Question 1

除了使用sansmath包之外，您是否考虑过使用arev？后者同时提供文本模式和数学模式无衬线字体，并且字形间距很大。如果您希望文本字体继续为 Computer Modern，只需\renewcommand\rmdefault{pcm}在加载arev包后发出指令即可。

的 x 高度arev相当大，尤其是与 CM 相比时。如果您决定采用这种方式，则可能不需要\large在环境设置中使用examplecolor。

\documentclass[12pt,letterpaper]{article}
\usepackage[onehalfspacing]{setspace}
\usepackage{arev}
\renewcommand\rmdefault{pcm} % revert text font to CM
\usepackage{xcolor}
\definecolor{examplecolor}{gray}{0.4}
 \newenvironment
 {exampletext}{\noindent\large\sffamily
    \color{examplecolor}}{\par}

\begin{document}
\noindent
This is what text normally looks like: 3, 17, 25, two thirds.

\bigskip
\begin{exampletext}I want my example text to look like this, but more handwritten: 3, two thirds, $\frac{17}{25}$, $x^{1/2}$. Notice that even in math mode, there are no serifs. \end{exampletext}

\end{document}

Answer

除了使用sansmath包之外，您是否考虑过使用arev？后者同时提供文本模式和数学模式无衬线字体，并且字形间距很大。如果您希望文本字体继续为 Computer Modern，只需\renewcommand\rmdefault{pcm}在加载arev包后发出指令即可。

的 x 高度arev相当大，尤其是与 CM 相比时。如果您决定采用这种方式，则可能不需要\large在环境设置中使用examplecolor。

\documentclass[12pt,letterpaper]{article}
\usepackage[onehalfspacing]{setspace}
\usepackage{arev}
\renewcommand\rmdefault{pcm} % revert text font to CM
\usepackage{xcolor}
\definecolor{examplecolor}{gray}{0.4}
 \newenvironment
 {exampletext}{\noindent\large\sffamily
    \color{examplecolor}}{\par}

\begin{document}
\noindent
This is what text normally looks like: 3, 17, 25, two thirds.

\bigskip
\begin{exampletext}I want my example text to look like this, but more handwritten: 3, two thirds, $\frac{17}{25}$, $x^{1/2}$. Notice that even in math mode, there are no serifs. \end{exampletext}

\end{document}

Question 2

看看LaTeX 字体目录。

Answer

看看LaTeX 字体目录。

Question 3

这回答了一个在评论中向我提出的问题。

您已完成所有需要做的事情。除了在序言中添加您提到的行之外，您无需执行任何特殊操作即可使用字体。

这是一个完整的例子：

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{lxfonts}
\usepackage{kantlipsum}
\begin{document}
  \kant[1-20]
\end{document}

如果您只想在特殊环境中使用字体，则可以通过复制相关部分来仅在其范围内为文本激活它们lxfonts.sty。请注意，这仍会全局更改数学字体。

\documentclass[12pt,letterpaper]{article}
\usepackage[T1]{fontenc}
\usepackage{amsfonts,mathtools,nicefrac}
\usepackage{xcolor}
\definecolor{examplecolor}{gray}{0.4}
% font configuration adapted from lxfonts.sty
\input{ulmsa.fd}
\input{ulmsb.fd}
\newenvironment{exampletext}{%
  \renewcommand\rmdefault{llcmss}%
  \renewcommand\sfdefault{llcmss}%
  \renewcommand\ttdefault{llcmtt}%
  \noindent\large\color{examplecolor}%
}{}
\SetSymbolFont{operators}{normal}{OT1}{llcmss}{m}{n}
\SetSymbolFont{letters}{normal}{OML}{llcmm}{m}{it}
\SetSymbolFont{symbols}{normal}{OMS}{llcmsy}{m}{n}
\SetSymbolFont{largesymbols}{normal}{OMX}{llcmex}{m}{n}
\SetSymbolFont{operators}{bold}{OT1}{llcmss} {bx}{n}
\SetSymbolFont{letters}  {bold}{OML}{llcmm} {bx}{it}
\SetSymbolFont{symbols}  {bold}{OMS}{llcmsy}{bx}{n}
\SetSymbolFont{largesymbols}{bold}{OMX}{llcmex}{m}{n} % no bold!
\DeclareSymbolFontAlphabet{\mathrm}    {operators}
\DeclareSymbolFontAlphabet{\mathnormal}{letters}
\DeclareSymbolFontAlphabet{\mathcal}   {symbols}
\DeclareMathAlphabet      {\mathbf}{OT1}{llcmss}{bx}{n}
\DeclareMathAlphabet      {\mathsf}{OT1}{llcmss}{m}{n}
\DeclareMathAlphabet      {\mathit}{OT1}{llcmss}{m}{sl}
\DeclareMathAlphabet      {\mathtt}{OT1}{llcmtt}{m}{n}
\SetMathAlphabet\mathsf{bold}{OT1}{llcmss}{bx}{n}
\SetMathAlphabet\mathit{bold}{OT1}{llcmss}{bx}{sl}
\SetSymbolFont{AMSa}{normal}{U}{lmsa}{m}{n}
\SetSymbolFont{AMSb}{normal}{U}{lmsb}{m}{n}
\makeatletter
\xdef\Join{\mathrel{\mathchar"0\hexnumber@\symAMSb 6F%
\mkern-14.2mu\mathchar"0\hexnumber@\symAMSb 6E}}
\makeatother
\global\let\leadsto\rightsquigarrow

\begin{document}

  This is what text normally looks like: 3, third,  \nicefrac{2}{3}.

\begin{exampletext}
  I want my example text to look like this, but more handwritten: 3, third, $\frac{17}{25}$. Notice that even in math mode, there are no serifs.
  \[
  \mathbf{B}(P)=\frac{\mu_0}{4\pi}\int\frac{\mathbf{I}\times\hat{r}'}{r'^2}dl = \frac{\mu_0}{4\pi}\,I\!\int\frac{d\boldsymbol{l}\times\hat{r}'}{r'^2}% from the LaTeX Font Catalogue example
  \]
\end{exampletext}

\end{document}

我不建议只更改专业环境的数学字体设置，因为根据您是否在环境范围内，您最终会得到看起来不太一样的符号，它们代表着相同的东西。不过，无论如何我可能不会使用这些设置。

或者你可以适应Mico 的方法尽管这里有点复杂，因为lxfonts.sty在序言末尾改变了字体，所以我们必须覆盖它：

\documentclass[12pt,letterpaper]{article}
\usepackage[T1]{fontenc}
\usepackage{amsfonts,mathtools,nicefrac,lxfonts}
\usepackage{xcolor}
\definecolor{examplecolor}{gray}{0.4}
\newenvironment{exampletext}{%
  \renewcommand{\rmdefault}{llcmss}%
  \renewcommand{\ttdefault}{llcmtt}%
  \renewcommand{\sfdefault}{llcmss}%
  \noindent\large\color{examplecolor}%
}{%
  \renewcommand{\rmdefault}{lmr}%
  \renewcommand{\ttdefault}{lmtt}%
  \renewcommand{\sfdefault}{lmss}%
}
\AtEndPreamble{%
  \renewcommand{\rmdefault}{lmr}%
  \renewcommand{\ttdefault}{lmtt}%
  \renewcommand{\sfdefault}{lmss}%
  \renewcommand{\familydefault}{\rmdefault}%
}

\begin{document}

  This is what text normally looks like: 3, third,  \nicefrac{2}{3}.

  \textsf{hi} \texttt{bye}

\begin{exampletext}
  I want my example text to look like this, but more handwritten: 3, third, $\frac{17}{25}$. Notice that even in math mode, there are no serifs.
  \[
  \mathbf{B}(P)=\frac{\mu_0}{4\pi}\int\frac{\mathbf{I}\times\hat{r}'}{r'^2}dl = \frac{\mu_0}{4\pi}\,I\!\int\frac{d\boldsymbol{l}\times\hat{r}'}{r'^2}
  \]
\end{exampletext}

  Here is some more standard text.

\end{document}

Answer