R plots with X11 cannot show CJK fonts -

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i loaded utf-8 csv file japanese characters in it, str this:

> str(purchases) 'data.frame':   168996 obs. of  7 variables:  $ item_count     : int  1 1 1 1 1 1 2 2 1 1 ...  $ i_date         : date, format: "2012-03-28" "2011-07-04" ...  $ small_area_name: factor w/ 55 levels "キタ","ミナミ他",..: 6 47 26 26 26 26 26 35 35 26 ...  $ user_id_hash   : factor w/ 22782 levels "0000b53e182165208887ba65c079fc21",..: 19467 7623 7623 7623 7623 7623 7623 7623 7623 7623 ...  $ coupon_id_hash : factor w/ 19368 levels "000eba9b783cec10658308b5836349f6",..: 3929 8983 5982 5982 5982 5982 5982 2737 18489 5018 ...  $ category       : factor w/ 13 levels "beauty","delivery service",..: 2 3 2 2 2 2 2 7 2 3 ...

so think there's nothing wrong encoding or locale(en_us.utf-8)? when plot with

> barplot(table(purchases$small_area_name))

why japanese characters turn little blocks this? r plot

i think have font display japanese characters

> names(x11fonts()) [1] "serif"        "sans"         "mono"         "times"        "helvetica"    [6] "cyrtimes"     "cyrhelvetica" "arial"        "mincho"

additional info:

> sessioninfo() r version 3.2.2 (2015-08-14) platform: x86_64-apple-darwin13.4.0 (64-bit) running under: os x 10.10.5 (yosemite)  locale: [1] en_us.utf-8/en_us.utf-8/en_us.utf-8/c/en_us.utf-8/en_us.utf-8  attached base packages: [1] stats     graphics  grdevices utils     datasets  methods   base       other attached packages: [1] ggplot2_1.0.1

you may want take @ showtext package, allows use different fonts in r graphs. ships cjk font can used directly.

try run code below:

library(showtext) showtext.auto() ## ... code generate data barplot(table(purchases$small_area_name))

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