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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224
8
章 軸
図8-32 対数軸の5の位置に補助目盛線を入れて、x 軸とy軸のスケール比を固定
レシピ
8.16
円形グラフを作成する
問題
円形のグラフを作りたい。
解決策
coord_polar()
を使います。ここでは、
gcookbook
の
wind
データセットを使います。このデータセッ
トは
1
日を通した風速と風向の
5
分ごとの観測値です。風向は
15
度ごとのビンに分けて、風速は
5 m/s
ごとに分けてカテゴリ化されています。
library(gcookbook) # wind
データセットを使うために
gcookbook
を読み込む
wind
#> TimeUTC Temp WindAvg WindMax WindDir SpeedCat DirCat
#> 3 0 3.54 9.52 10.39 89 10-15 90
#> 4 5 3.52 9.10 9.
90 92 5-10 90
#> 5 10 3.53 8.73 9.51 92 5-10 90
#> ...<280 more rows>...
#> 286 2335 6.74 18.98 23.81 250 >20 255
#> 287 2340 6.62 17.68 22.05 252 >20 255
#> 288 2345 6.22 18.54 23.91 259 >20 255
geom_histogram()
を使って、
SpeedCat
と
DirCat
の各ビンの観測数をプロットしてみましょう（図
8-33）。
binwidth
を
15
に設定し、ヒストグラムの ...
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