In order to create a covariance matrix for a given R DataFrame: Copy covariance_matrix <- cov(df) Steps to Create a Covariance Matrix for R DataFrame Step 1: Create a DataFrame Here is the syntax to create a DataFrame in R with 3 columns: Copy df <- data.frame( A = c(45, 37, 42, 35, 39), B … Read more
To create a correlation matrix for a DataFrame in R: Copy correlation_matrix <- cor(df) Steps to Create a Correlation Matrix for R DataFrame Step 1: Create R DataFrame Here is a simple DataFrame in R with 3 columns: Copy # Create the DataFrame df <- data.frame( A = c(45, 37, 42, 35, 39), B = … Read more
The summarize() function can be used to calculate summary statistics in R DataFrame. Here are the steps to derive the summary statistics for a given DataFrame. Steps to calculate summary statistics in R DataFrame Step 1: Install the dplyr package To start, install the dplyr package if you haven’t already done so: Copy install.packages(“dplyr”) Step … Read more
To convert a Character (string) column to a Date column in R DataFrame: Copy df$column_name <- as.Date(df$column_name) Example of Converting Character to Date Column in R DataFrame Here is an example of converting a Character column to a Date column in R DataFrame, where the date format is “yyyy-mm-dd” (additional date formats are available in … Read more
To convert a Character (string) column to an Integer column in R DataFrame: Copy df$column_name <- as.integer(df$column_name) Example of Converting Character to Integer Column in R DataFrame In the following example, the character ‘Price‘ column is converted to integer column in R DataFrame: Copy # Create a DataFrame df <- data.frame( Product = c(“Laptop”, “Printer”, … Read more
To convert a character column to a numeric column in R DataFrame: Copy df$column_name <- as.numeric (df$column_name) Example of Converting Character to Numeric Column in R DataFrame Here is an example of converting the character ‘Price‘ column to a numeric column in R DataFrame: Copy # Create a DataFrame df <- data.frame( Product = c(“Laptop”, … Read more
To convert a numeric column to a character column in R DataFrame: Copy df$column_name <- as.character(df$column_name) Example of Converting Numeric to Character Column in R DataFrame Here is an example of converting the numeric ‘Age‘ column to a character column in R DataFrame: Copy # Create a sample DataFrame df <- data.frame( Name = c(“Jon”, … Read more
The trimws() function can be used to remove leading and trailing whitespace from a character string in R: Copy trimws(my_string) Example of Removing Leading and Trailing Whitespace in R Here is an example of removing leading and trailing whitespace from a character string in R: Copy # Example of a string that contains leading and … Read more
Here are two ways to combine DataFrames vertically in R (stacking them on top of each other): (1) Using the rbind function: Copy combined_df <- rbind(df1, df2) (2) Using the bind_rows function from the dplyr package: Copy library(dplyr) combined_df <- bind_rows(df1, df2) Note that you’ll need to make sure the columns in all the DataFrames … Read more
Here are 2 ways to concatenate the values of multiple columns into a new column in R DataFrame: (1) Using the paste() function, including a separator between the concatenated values: For example, to concatenate the values of 3 columns in a DataFrame, and form a new column called the concat_col, including an underscore (“_”) separator … Read more
