I want to draw an arbitration scheduling scheme. I tried one with XFig, but the result is ... not that great

Code: Select all
\documentclass{article}
\usepackage{pgfgantt}
\begin{document}
\begin{ganttchart}[vgrid,hgrid]{15}
\ganttbar{Master 1}{7}{9} \\
\ganttbar{Master 2}{2}{4} \\
\ganttbar{Master 3}{5}{6} \ganttbar{}{10}{10} \\
\ganttbar{Master 4}{11}{13}
\end{ganttchart}
\end{document}
wassaw