MLEN questions

• debug a function when Safely from Purrr has been used?
• PCA from FactoMineR::PCA() not returning same as base::prcomp()
• Create a line plot using categorical data and not connecting the lines
• 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

MLEN answers