In this tutorial, we will learn about gsub() function in R to replace all matching patterns in a string. gsub, stands for “global substitution” is similar to another function R, sub(), but for substituting all matching patterns, not just the first one. Here is a typical use of gsub() in R. We need to provide… Continue reading gsub() in R to replace all matching patterns
dplyr near(): compare if numbers and vectors are nearly the same
In this tutorial, we will learn near() function part of R package dplyr to check the equality of two numbers or vectors. Often we would like to compare if two numbers or two vectors are equal. A naive approach of using == to compare if two numbers are equal can be problematic due to machine… Continue reading dplyr near(): compare if numbers and vectors are nearly the same
How to Save Dataframe into XLSX file in R
In R, there are many ways to save a dataframe as Excel file *.xlsx. In this tutorial, we will use the R package openxlsx and learn how to save a dataframe as xlsx file. First we will learn how to save a xlsx file using write.xlsx() function in openxlsx package. And then we will see… Continue reading How to Save Dataframe into XLSX file in R
How To Check If One or More Elements is in a Vector
In this tutorial, we will learn about is.element() function available in base R and use it to check if one or more elements is present in a vector. Let us create a sample vector in R Our simple vector hs 6 elements. If we want to check if a value us present in the vector,… Continue reading How To Check If One or More Elements is in a Vector
dplyr’s arrange(): Sort a Dataframe Columns
In this tutorial, we will learn how to sort a dataframe by a column in R. We will see three examples of using tidyverse’s arrange() function to sort a dataframe by one of its columns. First, we will sort a dataframe by numerical column in ascending order, next we will sort it in descending order… Continue reading dplyr’s arrange(): Sort a Dataframe Columns