Text Formatting ⇒ Custom/Macro Opacity

[LaTexLearner]

Is there any way to set a custom opacity?

My laser printer just printed some documents I created and I realized that the opacity was too low. Now I have to go back and change a whole lot of opacity settings. If only I'd had a custom macro/setting for that... Is that possible?

Something like \newopacity{\answeropacity}{0.8}?

Code: Select all

\documentclass{article}

% This didn't work...
%\newopacity{\answeropacity}{0.8}

\usepackage{tikz}

\begin{document}

\begin{enumerate} 
\item Draw a length that represents two starting from zero.

\tikz
{
 \draw (0,0)--(4,0); 
 \foreach \x in {0,...,4}
  {
   \draw (\x,-0.2)--(\x,0.2);
   \node[below] at (\x,-0.3) {\x};
  }
 \fill[opacity=0.5] (0,0) rectangle (2,0.2);
}

\item Draw a length that represents four starting from zero.

\tikz
{
 \draw (0,0)--(5,0); 
 \foreach \x in {0,...,5}
  {
   \draw (\x,-0.2)--(\x,0.2);
   \node[below] at (\x,-0.3) {\x};
  }
 \fill[opacity=0.5] (0,0) rectangle (4,0.2);
}

\end{enumerate}

\end{document}

[cgnieder]

Use

Code: Select all

\newcommand{\answeropacity}{0.8}

and then in your TikZ

Code: Select all

\fill[opacity=\answeropacity]

[LaTexLearner]

Awesome. I look forward to trying that tonight.

[LaTexLearner]

Worked perfectly, thanks!