The abs() function calculates the absolute value of a numeric input, returning a non-negative (only positive) value by removing any…
When working with R in an interactive mode, you don't need to use any functions or methods to print the…
To calculate the sample variance (measurement of spreading) in R, you should use the built-in var() function. It calculates the…
The tryCatch() function acts as a mechanism for handling errors and other conditions (like warnings or messages) that arise during…
The grep() function in R searches for matches to a pattern within a character vector. It returns indices or values…
Whether you are reading or writing files via programs in the file system, it is necessary to check if that…
When it comes to checking the data type of a variable, it depends on what specific thing you are looking…
The grepl() function (stands for "grep logical") in R searches for patterns within each element of a character vector. It…
The zip() function creates a new zip archive file. You must ensure that the zip tool is available in your system…
When working with file systems, checking the directory or file existence is always better before commencing the operations. For a…