To find the correlation matrix for rows of an R data frame, we can follow the below steps −First of all, create a data frame.Then, use cor function with transposed data frame to find the correlation matrix for rows.Example1Let's create a data frame as shown below − Live Demo> x1 x2 ... Read More

To find the sum of numbers stored in character vector separated with a special character in R, we can follow the below steps −First of all, create a vector having numbers stored in character vector separated with a special character.Then, use sapply and strsplit function to find the sum of ... Read More

To divide the row values by row mean in R data frame, we can follow the below steps −First of all, create a data frame.Then, use apply function to divide the data frame row values by row mean.Create the data frameLet's create a data frame as shown below − Live Demo> ... Read More

To create a horizontal line in ggplot2 graph with larger width in R, we can follow the below steps −First of all, create a data frame.Then, create a plot using ggplot2.After that, create the same plot with geom_hline function having horizontal line defined with yintercept and its width defined with ... Read More

To create a dashed horizontal line in a ggplot2 graph in R, we can follow the below steps −First of all, create a data frame.Then, create a plot using ggplot2.After that, create the same plot with geom_hline function having horizontal line defined with y intercept and its type defined with ... Read More

To create a histogram with Y-axis values as count using ggplot2 in R, we can follow the below steps −First of all, create a data frame.Then, use geom_histogram function of ggplot2 package with aes to create the histogram with Y-axis values as count.Create the data frameLet's create a data frame ... Read More

To check whether the difference between previous and current value in a column of an R data frame is 1, we can follow the below steps −First of all, create a data frame.Then, create a custom function for the difference between previous and current value.Now, use the function to check ... Read More

To create an ID column for the combination of values in multiple columns in R data frame, we can follow the below steps −First of all, create a data frame.Then, create an ID column using as.numeric, as.factor and with function for the combination of values in columns of the data ... Read More

To divide the row values by row standard deviation in R’s data.table object, we can follow the below steps −First of all, create a data.table object.Then, use apply function to divide the data.table object row values by row standard deviation.Create the data.table objectLet’s create a data.table object as shown below ... Read More

To add a regression line to a plot in base R if intercept and slope are given, we can follow the below steps −First of all, create two vectors and the scatterplot between them.Then, use abline function to create the regression line with intercept and slope given by a and ... Read More