Category:

# R

• ## How to Group Data by Hour in R (With Example)

You can use the following syntax to group data by hour and perform some aggregation in R: library(dplyr) library(lubridate) #group by hours…

• ## How to Create a Vector of Zeros in R (With Examples)

There are three common ways to create a vector of zeros in R: Method 1: Use numeric() #create vector of 12 zeros…

• ## How to Count Unique Values in Column in R

You can use the following methods to count the number of unique values in a column of a data frame in R:…

• ## How to Plot a Table in R (With Example)

Often you may want to plot a table along with a chart in R. Fortunately this is easy to do using functions…

• ## R: How to Use microbenchmark Package to Measure Execution Time

You can use the microbenchmark package in R to compare the execution time of different expressions. You can use the following syntax…

• ## How to Use mtext Function in R (With Examples)

You can use the mtext() function in R to write text in the margins of a plot. This function uses the following…

• ## How to Use LETTERS in R (With Examples)

You can use the LETTERS constant in R to access letters from the alphabet. The following examples show the most common ways…

• ## How to Use n() Function in R (With Examples)

You can use the n() function from the dplyr package in R to count the number of observations in a group. Here…

• ## How to Plot Mean with geom_bar() in ggplot2

You can use the following basic syntax to plot the mean values by group using the geom_bar() function in ggplot2: library(ggplot2) ggplot(df,…

• ## How to Convert Excel Date Format to Proper Date in R

You can use the following methods to convert Excel dates that are formatted as numbers into proper dates in R: Method 1:…