akrun questions

akrun answers

• dplyr mutate on range of columns
• R- assign inside a function
• Use values in vector to add rows in dataframe
• Mutating values for only a subset of the data under a condition, while keeping all data rows
• Select variables/columns in a dataframe by those with matching given factor levels
• How do I determine how many elements in a vector contain a pattern from a second vector?
• R - How to convert this nested for loop into an lapply function that can mutate a list
• Using dplyr summarize and group_by functions based on "or" condition among multiple columns of a dataframe
• How to cut a vector at the first negative value
• R - Regex text extraction which recognizes numeric values of more than 1 number