[Tex/LaTex] How to use a usepackage only for one section

graphicspackagestexinputstikz-pgf

I need 2 different usepackages: one for a floatchart ( http://www.texample.net/tikz/examples/simple-flow-chart/) and one for my whole document.

For the Floatchart:

\usepackage[latin1]{inputenc}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows}

For my document:

\usepackage[pdftex]{graphicx}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

If I insert both, texmaker says: option clash for package graphicx and for package inputenc.

What can I do? Can I specify the usepackage for the floatchart only for the floatchart?

Best Answer

I don't know where this [pdftex] habit originates but you don't need to use it. You can read a few answers on this site too about it but in a nut shell, most modern packages know what the current driver is and they can decide. Providing a fixed option is only looking for trouble.

In your example, TikZ already loads graphicx so you don't need to do anything. Just load TikZ and you are good to go. If for some reason you don't want to include the package then include it as a picture.

So, using

\usepackage[T1]{fontenc} 
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric,arrows}

and it should work for both sections. Instead of font and input encoding, I would go with LuaTeX though.

Some reading;

Conflict between color, graphicx and libertine

Option clash when using graphicx and tikz packages

Is it possible to load a TikZ library locally?

Related Solutions

[Tex/LaTex] Conflict between color, graphicx and libertine

These option clashes happen when a package is requested to be loaded on two different positions, like by you and inside another package, but with different options. The package is loaded by the first \usepackage (or its twin \RequirePackage); it isn't loaded again when it is requested again. It simply can't be loaded a second time. Therefore the new options can be activated and previous options might conflict with the second usage. So LaTeX creates an error to report this issue to you.

The way to fix this is to declare the options beforehand using \PassOptionsToPackage{<options>}{<package>}. Then they are used wherever the package is loaded.

\documentclass{article}
\usepackage{ifpdf}
\ifpdf
    \PassOptionsToPackage{pdftex,usenames,dvipsnames}{color}
    \usepackage[T1]{fontenc}
    \usepackage{libertine} % most likely loads 'color' itself
    %\usepackage{lmodern} % doesn't load 'color'
    \usepackage{color}
    \usepackage[pdftex]{graphicx}
\else
    %\bye
\fi
\begin{document}
Hello, world!
\end{document}

I can't test it by myself, because I don't have the libertine package installed.

PS:

I don't think you need to set pdftex manually. Normally packages do a good job recognizing the driver by themselves. Also you might want to use the extended xcolor package instead of color.

[Tex/LaTex] Scale TikZ figure to linewidth when relative positioning used

You can use \resizebox{\linewidth}{!}{<tikz picture>} from the graphics package which is already loaded by tikz anyway. It scales its content to the given width and height (! for the height means that it scales with the width). One drawback of this approach is that everything is scaled including the line width and node texts which might not be what some people want.

Note that \resizebox reads the whole picture as a macro argument, which isn't very efficient and does not allow verbatim or other special content. Alternatives are \Resizebox (same syntax) from my realboxes package or the {adjustbox}{width=\linewidth} environment from my adjustbox package.

Best Answer

Related Solutions

[Tex/LaTex] Conflict between color, graphicx and libertine

PS:

[Tex/LaTex] Scale TikZ figure to linewidth when relative positioning used

Related Question