Bryan Goggin questions

Bryan Goggin answers

• Pass variable to tidyr's gather to rename key/value columns?
• How to filter out words with low tf-idf in a corpus with gensim?
• Shinydashboard: Is it not possible to have nested menu sub items? Can't make it work
• Convert ggplot object to plotly in shiny application
• R multivariate one step ahead forecasts and accuracy
• how do deparse & substitute work to allow access to an objects name?
• When we do apply() over a sparse matrix, it automatically convert it into a dense matrix? [closed]