Tag: Ifelse from one to another column in R

  • Use ifelse across a range of R data frame columns

    Use ifelse across a range of R data frame columns

    Here is how to apply the ifelse function across a range of multiple R data frame columns. Sometimes it is necessary to do calculations by a condition and it could be time-consuming to do that for each of multiple columns. Or even worse. Maybe the necessary columns are changing position over time and you have…