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
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レシピ
1.6
SPSS/SAS/Stata
ファイルからデータを読み込む
7
イルを読み込むための
read.xls()
関数や、
.xlsx
ファイルを読み込むための
read.xlsx()
関数がありま
す。これらを実行するためには、外部ソフトウェアをコンピュータにインストールする必要があります。
read.xls()
では
Java
が必要で、
read.xlsx()
では
Perl
が必要です。
レシピ
1.6
SPSS/SAS/Stata
ファイルからデータを読み込む
問題
SPSS
ファイルや、
SAS
、
Stata
などからデータを読み込みたい。
解決策
haven
パッケージには、
SPSS
ファイルを読み込むための
read_sav
関数があります。
SPSS
ファイル
を読み込むには、次のようにします。
#
初回にインストールするだけでよい
install.packages("haven")
library(foreign)
data <- read_sav("datafile.sav")
解説
haven
パッケージには、他
のフォーマットを読み込むための以下のような関数もあります。
関数 読み込み可能なフォーマット
read_sas()
SAS
read_dta()
Stata
haven
以外には、
foreign
パッケージというものもあります。
foreign
パッケージでは、
SPSS
と
Stata
ファイルがサポートされていますが、
haven
パッケージの関数ほどは、アップデートされていません。
例えば、
foreign
パッケージではバージョン
12
までの
Stat
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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.