Crosstab calculation in R
Crosstab calculation in R, To create a crosstab using functions from the dplyr and tidyr packages in R, use the following basic syntax. df %>% group_by(var1, var2) %>% tally() %>% spread(var1,...
Category: R
Set Axis Label Position in ggplot2
Set Axis Label Position in ggplot2, To change the axis label location in ggplot2, use the following syntax. theme(axis.title.x = element_text(margin=margin(t=70)), axis.title.y = element_text(margin=margin(r=40))) For the margin argument, you can use the letters t,...
Augmented Dickey-Fuller Test in R
Augmented Dickey-Fuller Test in R, If a time series has no trend, constant variance over time, and a consistent autocorrelation structure across time, it is considered to be “stationary.” An augmented Dickey-Fuller test, which...
droplevels in R with examples
droplevels in R with examples, To remove unneeded factor levels, use R’s droplevels() function. This function comes in handy when we need to get rid of factor levels that are no longer in use...
Reorder Boxplots in R with Examples
Reorder Boxplots in R, you may need to reorder boxplots frequently. The examples below demonstrate how to accomplish it using two distinct methods. Method 1: Reorder based on a predetermined sequence The built-in airquality...
Cumulative Sum calculation in R
Cumulative Sum calculation in R, using the dplyr package in R, you can calculate the cumulative sum of a column using the following methods. Best online course for R programming – Data Science Tutorials...
How to Count Distinct Values in R
How to Count Distinct Values in R?, using the n_distinct() function from dplyr, you can count the number of distinct values in an R data frame using one of the following methods. With the...
Count Observations by Group in R
Count Observations by Group in R, want to count the number of observations by the group. Fortunately, the count() function from the dplyr library makes this simple. Using the data frame below, this tutorial...
How to add columns to a data frame in R
How to add columns to a data frame in R?, To add one or more columns to a data frame in R, use the mutate() function from the dplyr package. With the following data...
How to Remove Columns from a data frame in R
Remove Columns from a data frame, you may occasionally need to remove one or more columns from a data frame. Fortunately, the select() method from the dplyr package makes this simple. Remove Rows from...
