MLEN questions

• How to save plots in R and have them nice looking
• Passing NULL in purrr pmap
• Adding country flag to pickerinput shinywidgets.
• Several joins in query - possible to replacement to gain performance?
• Exporting a caret R model with minimum information used to predict
• Possible to combine DT, formattable and shiny?
• Hide comments in R markdown
• Creating a waffle plot together with facets in ggplot2
• Creating lists and sub items in R markdown not working any longer?

MLEN answers