Modifying global options
Instead of creating, inspecting, and removing objects in the working environment, R options have effects in the global scale of the current R session. We can call getOption() to see the value of a given option and call options() to modify one.
Modifying the number of digits to print
In RStudio, when you type getOption(<Tab>), you can see a list of available options and their descriptions. A commonly used option, for instance, is the number of digits to display. Sometimes, it is not sufficient when we deal with numbers requiring higher precision. In an R session, the number of digits printed on screen is entirely managed by digits. We can call getOption() to see the current value of digits and call options() to set digits to a larger number:
When an R session starts, the default value of digits is 7. To demonstrate its effect, run the following code:
123.12345678 ## [1] 123.1235
It is obvious that the 11-digit number is only shown with...
