jpdugo17 questions

jpdugo17 answers

• How to subset windows in a dataframe using start- and end-values from another dataframe in R?
• How to make a datatable in R shiny editable?
• Extracting a date from a column and adding the year if missing in R
• updateSelectInput fails to clear input object
• Creating individual dataframes from a grouped dataframe
• Modify a Shiny reactive expression with two forms of user input
• Keep only the second observation per group in R
• Transform each column factors in a column containing just `0` or `1`
• Add a column based on all other columns in DB
• How can I display multiple.xpt files in R shiny and filter them based on their columns?