2012-12 Post-Processing grid Graphics
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Statistical plots drawn with the ggplot2 package generate numerous grid grobs and viewports which are labelled and organised into a coherent hierarchy. This report describes an example that shows how to manipulate the grobs and viewports in a ggplot2 plot using tools from the grid package, export the result to SVG using gridSVG, then manipulate the result further using XML tools, to produce an interactive ggplot2 graphic for the web.
Paul Murrell
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