- R has a complete collection of set operators.…Let's take a look at union, intersect, and differences.…First we need two vectors to compare.…So I'll create Vector A and Vector B.…Notice that both Vector A and Vector B…have the number 10 as part of their contents.…While first of all, I'd like to combine those two…or form a union.…Not surprisingly the command for this is union…and I describe what I'd like to combine.…
So Vector A and Vector B…and I hit return…and you'll see that it returns a union…of Vector A and Vector B.…Notice that this is a unique union.…So 10 is not duplicated.…Now I'd like to find the intersection between…Vector A and Vector B.…Intersect.…Vector A.…And Vector B.…And when I hit return…10 is the intersecting number between those two vectors.…
Now I may want to know what's unique about Vector A…compared to Vector B?…To do that I'll use setdiff…and I type in Vector A…compared to Vector B.…And this'll tell me what's unique about Vector A.…One, two, three, four, five, six, seven, eight, nine.…It doesn't include 10…
Author
Updated
12/4/2019Released
1/10/2018The five minutes you spend each week will provide you with a building block you can use in the next two hours at work. Review language basics, discover methods to improve existing R code, explore new and interesting features, and learn about useful development tools and libraries that will make your time programming with R that much more productive.
All series code samples can be downloaded at https://github.com/mnr/five-minutes-of-R.Note: Because this is an ongoing series, viewers will not receive a certificate of completion.
Skill Level Intermediate
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Video: Sets: Union, intersect, and difference