You can easily convert a character vector into a numeric, but only if its vector items are “convertible” to numeric. If there’s one character item in a vector, you will get an error while converting that vector to numerical. Let me demonstrate this by an example. rv <- c(21, “k”, 19, 11, “b”, “l”) rv … Read more
All the decimal values are numerical values in R. That means if you assign any decimal value to that variable in R, it will become numeric. To check whether the argument is numeric or a data.frame with numeric columns in R, use the is.numeric() function. is.numeric in R The is.numeric in R is a built-in … Read more
R language has many types of operators to carry out logical, comparative, and mathematical operations. For example, relational operators are used to compare between values. Not equal to in R The not equal operator in R is one of the relational operators, and it is the opposite of the equality operator. The not equal to … Read more
Every language provides some functions that can help you print the data on the console, and R is no different. To print the data on the console in R, use the print() function. print in R The print in R is a built-in function that prints its argument and returns it invisibly. For example, the … Read more
The numeric() method creates or coerces objects of type “numeric”. The is.numeric() is a built-in function used for a more comprehensive test of an object being interpretable as numbers. Factors are data structures that categorize the data or represent categorical data and save it on multiple levels. They can be saved as integers with an … Read more
We often come across a functionality where we want to check something by comparing it with patten. We use a regular expression to match specific character vectors in the string. Let’s see how to use regular expression in R. The functions like grep(), grepl(), regexpr(), gregexpr(), and regexec() search for matches to argument pattern within … Read more
R does not come with a standard error function. You need to either create a standard error function or use a package like plotrix to calculate. Standard Error in R The standard error in R is just the standard deviation divided by the square root of the sample size. The variance of the sampling distribution … Read more
The mode in R is the value with the highest number of occurrences in a set of data. Unlike the mean and median, the mode can have both numeric and character data. Mode in R There is no built-in function to calculate the mode in R. To calculate mode in R, you have to create … Read more
Percentages and percentiles are related in many ways, and sometimes these names are used interchangeably, but they are different terms. A percentage describes a fraction, while a percentile describes the fraction of the data points of a data set below a specific point. Both a percentage and percentile value provide helpful information about the dataset, … Read more
R programming language provides several functions to deal with date and time. Formatting and converting dates from one format to another is a frequent task any developer could face. The general rule of thumb for dealing with date/time in R is to use the simplest technique possible. Otherwise, it gets ugly and complex. R Date … Read more