# ggplot2 meet d3

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With great libraries, just a couple lines of code can do amazing things. For instance, let’s limit ourselves to less than 10 lines of code and see what ggplot2 and d3 can do. We will use gridSVG as discussed in yesterday’s post I Want ggplot2/lattice and d3 (gridSVG–The Glue) to expose ggplot2 to d3. Thanks Hadley Wickham, Mike Bostock, Paul Murrell, Simon Potter, and George Bull/Sharp Statistics.

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**Just think what we can do if we remove our 10 line code limit.**

#get the latest version of gridSVG #install.packages("gridSVG", repos="http://R-Forge.R-project.org") require(ggplot2) require(gridSVG) #draw a ggplot2 graph #thanks http://sharpstatistics.co.uk/r/ggplot2-guide/ p <- ggplot(iris, aes(Sepal.Length, Sepal.Width)) + geom_point() p + facet_grid(. ~ Species) + stat_smooth(method = "lm") #define a simple html head template htmlhead <- '<!DOCTYPE html> <head> <meta charset = "utf-8"> <script src = "http://d3js.org/d3.v3.js"></script> </head> <body> ' #use gridSVG to export our plot to SVG mysvg <- grid.export("panzoom1.svg") #define a simple pan zoom script using d3 panzoomScript <- ' <script> var svg = d3.selectAll("#gridSVG"); svg.call(d3.behavior.zoom().scaleExtent([1, 8]).on("zoom", zoom)) function zoom() { svg.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")"); } </script> </body> ' #combine all the pieces into an html file sink("panzoom_ggplot2.html") cat(htmlhead,saveXML(mysvg$svg),panzoomScript) #close our file sink(file=NULL)

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