Rook server to integrate ggplot2 output to Power BI The module rweb.R assumes that you have already installed packages, e.g. Rook ggplot2 XML gridSVG
once you have pre-requisite packages installed, simply run R in batch mode as R -q -f rweb.R
then use a browser to enter URL http://rmachine.web/custom/test or http://rmachine.web/custom/multiple (for multiple graph test)