errorstikz-pgf
I am drawing a Picture using TikZ with two \draw commands.
The first one works but on the second LaTeX claims
! Undefined control sequence. l.44 \draw (0,2) -- (-.5,2);
What can I do to fix that…
Thanks in the preface
EDIT: MWE
\begin{figure}[htbp]
\centering
\begin{tikz}
% First the house
\draw [thick,color=gray] (0,0) -- (0,2) -- (1,3) -- (2,2) -- (2,0) -- cycle (0,2) -- (2,2);
% This command doesnt work...
\draw (0,1) -- (-.5,1);
\end{tikz}
\end{figure}
Moving the definition of \dsr command to before \begin{longtable} and adding \usepackage{multirow} in the preamble seem to solve the problem.
A definition inside a cell is only defined in the cell (which forms a group) unless it is made global. (Thanks to Qrrbrbirlbel for mentioning this in the comment.)
Output looks like this:
The complete error message you get is
! Undefined control sequence.
<argument> Let $(\Omega , \varepslion
, \mathbb {P})$ be a probability space...
l.20 }
?
An error message like this is made of four parts:
The number line you get is where the closing brace of the argument to \textit is, because TeX doesn't interpret arguments when it absorbs them. Thus it realizes there's an error when it's too late. The error is somewhere before the }, but you can see it clearly in the LaTeXian console.
In this case it's just a typo: the correct command is \varepsilon.
Note that sometimes this error checking may be confusing: if you make a typo in the preamble, say
\newcommand{\eps}{\varepslion}
and use \eps in the document, the error message would point to the same location, but it will be like
! Undefined control sequence.
\eps ->\varepslion
l.22 }
so you know that the error is in the definition of \eps.
Best Answer
Try this. It should work.