A. Suliman questions

A. Suliman answers

• R: how can I merge two data frames so that I obtain panel data?
• Wide data frame with 4 columns to long data frame with 3 columns [duplicate]
• pivot_longer error: impossible to combine different classes? [duplicate]
• Create new column to show partial matches across strings in dplyr
• Create variable in database using ALTER TABLE and UPDATE
• Calculating multiple ROC curves in R using a for loop and pROC package. What variable to use in the predictor field?
• Use for-loop or apply function to separate and sum variables
• in shiny, how to plot from sliderinput that contains adding columns based on selectinputs
• In Shiny, How to add iconic checkboxgroup input to create datatable, based on the selection, which contain icons on the column names not text?
• Concatenate string columns and order in alphabetical order