July 2012
Beginner
408 pages
9h 17m
English
Content preview from R For Dummies
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Chapter 19
Ten Things You Can Do in R That You Would’ve Done in Microsoft Excel
In This Chapter
Performing calculations and other operations on data
Going beyond what you can do in a spreadsheet
The spreadsheet is probably one of the most widely used PC applications — and for good reason: Spreadsheets make it very easy to perform calculations and other operations on tabular data. But spreadsheets pose some risks as well: They’re easy to corrupt and very difficult to debug.
The good news is, you can use R to do many of the same things you used to do in spreadsheets. In R, you use data frames to represent tabular data. R has many functions, operators, and methods that allow you to manipulate and calculate on data frames. This means that you can do just about anything (and more) in R that you would’ve done in Microsoft Excel, LibreOffice Calc, or your favorite spreadsheet application.
In this chapter, we offer some pointers on functions that you can explore in R, most of which are covered earlier in this book. In most cases, we provide some sample code but not the results. Try these examples yourself, and remember to use the R Help documentation to find out more about these functions.
Adding Row and Column Totals
One task that you may frequently do in a spreadsheet is calculating ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.