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ggplot2 でプロット領域が文字化け(豆腐化)する(Mac)

Last updated at Posted at 2016-08-04

ggplot2 で日本語を使う場合は、基本的にコマンドの最後に theme_gray(base_family = "HiraKakuPro-W3") を加えれば良いが、プロット領域に日本語を表示しようとすると化けることがある。

soy <- read.csv
 ("http://web.ias.tokushima-u.ac.jp/linguistik/Book1.csv", fileEncod = "CP932")

library ("ggplot2")
ggplot (soy, aes (x = soy, y = source)) +  
  geom_text(aes(label = city)) +
  xlab("醤油") + ylab ("ソース") +
  ggtitle ("醤油とソースの消費量") + 
  geom_smooth(method = "lm") +
  theme_gray (base_family = "HiraKakuPro-W3")

soy1.png

これは geom_text() に明示的にfamilyを指定しないといけないようである。多分。

ggplot (soy, aes (x = soy, y = source)) +  geom_text(aes(label = city), size = 6, family = "HiraKakuPro-W3") +
  xlab("醤油") + ylab ("ソース") + 
  ggtitle ("醤油とソースの消費量") + 
  geom_smooth(method = "lm") + 
  theme_gray (base_family = "HiraKakuPro-W3")

soy2.png

徳島と岡山って、ソースを何に使っているのよ?

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