====== Latex Tips ======

===== Graphviz in PDFLatex =====

Ever wondered how to include graphiz diagrams in a pdflatex file without converting back to a raster image?

First use **dot** to generate a PostScript file:

  dot -Tps -O example.gv

Convert to an Encapsulated PostScript:

  ps2epsi example.gv.ps example.gv.eps

Use **epstopdf** (for ubuntu in texlive-extra-utils package) to create a pdf file:

  epstopdf --outfile=example.pdf example.gv.eps

Combine them in an executable script (e.g. /usr/bin/dotpdf) like:

  TIMESTAMP=`date +%s`
  TMPDIR=/tmp/dot2pdf$TIMESTAMP
  PSFILE=$TMPDIR/$1.ps
  EPSFILE=$TMPDIR/$1.eps
  PDFFILE=$1.pdf
  
  mkdir $TMPDIR
  dot -Tps -o$PSFILE $1
  ps2epsi $PSFILE $EPSFILE
  epstopdf --outfile=$PDFFILE $EPSFILE
  rm $TMPDIR -r

This accepts the graphviz file <filename> and will result in an <filename>.pdf file. Don't forget to ''chmod +x /usr/bin/dotpdf'' .

====== Rotate table, or landscape ======

I use sidewaystable for simple table rotation, but it won't rotate the actual page when for example viewing in a pdf reader. Therefore, I now use landscape in certain situations.

  \usepackage{pdflscape}
  \begin{landscape}
  \end{landscape}

But when I set the size of the resizebox, I get weird results. After some debugging I found the problem.

  Width : \the\textwidth.
  Height : \the\textheight.

Seems textheight is not set to textwidth of the portrait mode, while textwidth ís set to portrait textheight. Setting ptextheight:
  \newdimen\ptextheight
  \ptextheight\textheight
  \begin{landscape}

  Pheight : \the\ptextheight.

  \begin{table}[h]
  \resizebox{\ptextheight}{!} {
    blablabla tabular to be rotated
  }
  \end{table}