TwentyNewsgroups        Twenty Newsgroups Data
createJSON              Create the JSON object to read into the
                        javascript visualization
jsPCA                   Dimension reduction via Jensen-Shannon
                        Divergence & Principal Components
renderVis               Create an LDAvis output element
runShiny                Run shiny/D3 visualization
serVis                  View and/or share LDAvis in a browser
visOutput               Shiny ui output function
