akrun questions

akrun answers

• how to copy, or "fill" as in excel, a value up or down a certain number of rows
• Create New Variable from Column Index Value
• R: Calculate cumulative sums and counts since the last occurrence of a value
• Pivot_wider function (tidyr r package) from multiple variables
• Efficient object creation with R6
• R: deleting the rows of the variables (factor) with a predetermined frequency of occurrence and automatic update levels of factors
• How can I delete the rows using Filter Function in R?
• Dropping columns with common phrase inside each name, using R
• What is the Base R equivalent of this dplyr group_by code?
• How to narrow down data frame in R [duplicate]