Rのチュートリアル swirl
RStudioとか使ってインタラクティブにRを学べる
swirldev/swirl_courses · GitHub
> install.packages("swirl") > library("swirl") > swirl()
| When you are at the R prompt (>): | -- Typing skip() allows you to skip the current question. | -- Typing play() lets you experiment with R on your own; swirl will ignore what you do... | -- UNTIL you type nxt() which will regain swirl's attention. | -- Typing bye() causes swirl to exit. Your progress will be saved. | -- Typing main() returns you to swirl's main menu. | -- Typing info() displays these options again.
- 1: R Programming
- 1: Basic Building Blocks
- 2: Sequences of Numbers
- Vector同士の演算は長さが少ない方がrepeatされて、各要素対応して計算される
c(1,2,3,4) + c(0,10,100)
- sqrt()
- オペレーターのhelpを見る
- ?`:`
- seq() と同等
- ?`:`
- seq_along()
- rep()
- RStudio
- RStudio
- 代入( <- )
⌥ -
The Johns Hopkins Data Science Specialization on Coursera | Simply Statistics