Here is how to bind two or more R data frames vertically using different methods and dealing with possible errors. Binding R data frames together by rows might be easy, but there might be situations where columns don’t match or there are more than two data frames.
Category: R
How to calculate weighted mean in R
Calculation of weighted mean in R is done easily by dedicated function or mathematically. Here are a couple of situations and solutions to successfully do weighted mean calculations in R.
Detect combination of multiple strings in R
Here is how to detect multiple strings in R using base function grepl and alternatives, like str_detect from package stringr. There will be two main scenarios – detection of multiple strings simultaneously and any of the given strings.
dplyr error: `n()` must only be used inside dplyr verbs
If you are using R and getting dplyr error: `n()` must only be used inside dplyr verbs, then here is the most likely cause and 3 possible solutions to this problem.
Recode data in R, replace values
Here is how to recode data in R in 3 different ways. Some may call it an efficient way how to replace existing values with new values.
My top 10 favorite dplyr tips and tricks
Here is a compilation of my favorite dplyr tips and tricks that are very useful and easy to learn. When I started to work with the dplyr package, the first thing was the shortcut for the pipe operator in Windows Ctrl + Shift + M. A little thing with a significant impact. That is why… Continue reading My top 10 favorite dplyr tips and tricks
Round, roundup, rounddown, trunc in R
Here is how to round or truncate numbers, dates, and times in R in different ways. Depending on your goals and situation, there might be different needs and efficient solutions.
5 ways how to format output in R console
Here is how to format output in the R console in 5 different ways to make your dataset look better if that’s necessary. In my case, I like to take a quick look at few lines of a data frame and want to add gridlines or other formatting features to make them easier to read.
Get the first and last row of the data group in R
If your data frame content is categorized and you are interested to extract the first and the last row of each group in R, this post is for you. It is a useful solution to detect the minimum and the maximum by a group in big data sets. In my experience, it works faster than… Continue reading Get the first and last row of the data group in R