ERROR: Undefined control sequence.
--- TeX said ---
l.59 \Tree
[.SD [.D El][.SN [.N gato][.SP [.P con][.SN [.N botas]]]]]
--- HELP ---
TeX encountered an unknown command name. You probably misspelled the
name. If this message occurs when a LaTeX command is being processed,
the command is probably in the wrong place---for example, the error
can be produced by an \item command that's not inside a list-making
environment. The error can also be caused by a missing \documentclass
command.
但是我使用 qtree 包并且在工作文件夹中有 qtree.sty：
\documentclass{book}
\usepackage[utf8]{inputenc}
\usepackage[spanish]{babel}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{fancyhdr}
\usepackage{multirow}
\usepackage{qtree}
我尝试安装 tikz-qtree，但使用时出现同样的错误。
我不知道为什么它不起作用。
最小示例
\documentclass{book}
\usepackage[utf8]{inputenc}
\usepackage[spanish]{babel}
\usepackage{synttree}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{fancyhdr}
\usepackage{multirow}
\usepackage{qtree}
\begin{document}
\textit{El gato con botas}\\
\Tree [.SD [.D El][.SN [.N gato][.SP [.P con][.SN [.N botas]]]]]
\end{document}
.log
This is pdfTeX, Version 3.14159265-2.6-1.40.15 (TeX Live 2015/dev/Debian) (preloaded format=pdflatex 2015.10.26) 30 OCT 2015 09:19
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./minimal.tex:16: Undefined control sequence.
l.16 \Tree
[.SD [.D El][.SN [.N gato][.SP [.P con][.SN [.N botas]]]]]
The control sequence at the end of the top line of your error message was never \def'ed. If you have misspelled it (e.g., `\hobx'), type `I' and the correct spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
[1{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}
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LaTeX Info: Redefining \% on input line 6. ) )
Here is how much of TeX's memory you used: 3253 strings out of 495020 38918 string characters out of 6181323 102333 words of memory out of 5000000 6463 multiletter control sequences out of 15000+600000 4339 words of font info for 16 fonts, out of 8000000 for 9000 14 hyphenation exceptions out of 8191 27i,4n,43p,245b,224s stack positions out of 5000i,500n,10000p,200000b,80000s </usr/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb></us r/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/cmti10.pfb>
Output written on minimal.pdf (1 page, 23193 bytes). PDF statistics: 16 PDF objects out of 1000 (max. 8388607) 10 compressed objects within 1 object stream 0 named destinations out of 1000 (max. 500000) 1 words of extra memory for PDF output out of 10000 (max. 10000000)
请问有人能帮帮我吗？
答案1
qtree在空格方面有点挑剔。每个]s 序列前面都必须有一个空格，如下所示：
\Tree [.SD [.D El ][.SN [.N gato ][.SP [.P con ][.SN [.N botas ]]]]]