November 2019
Intermediate to advanced
472 pages
9h 23m
Japanese
Content preview from Rグラフィックスクックブック 第2版 ―ggplot2によるグラフ作成のレシピ集
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
376
15
章 データの前処理
#> sex ageYear ageMonth heightIn weightLb
#> 1 f 11.92 143 56.3 85.0
#> 2 f 12.92 155 62.3 105.0
#> ...<232 more rows>...
#> 236 m 13.92 167 62.0 107.5
#> 237 m 12.58 151 59.3 87.0
5
列あり、各行は
1
事例、つまり
1
人分の情報を表します。
str()
関数を使うと構造がより明確にわか
ります。
str(heightweight)
#> 'data.frame': 236 obs. of 5 variables:
#> $ sex : Factor w/ 2 levels "
f","m": 1 1 1 1 1 1 1 1 1 1 ...
#> $ ageYear : num 11.9 12.9 12.8 13.4 15.9 ...
#> $ ageMonth: int 143 155 153 161 191 171 185 142 160 140 ...
#> $ heightIn: num 56.3 62.3 63.3 59 62.5 62.5 59 56.5 62 53.8 ...
#> $ weightLb: num 85 105 108 92 112 ...
最初の列
sex
は
"f"
と
"m"
という
2
レベルのファクタです。他の
4
列は数字のベクトルです（
ageMonth
だけは整数ベクトルですが、ここで説
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.