R作图时，如何在图片中使用windows系统自带的其他中文字体？以前尝试过好几次，都没有成功。
首先安装二个包：
R中自带的默认字体家族，可以通过sysfonts::font.families()函数查看：
require(sysfonts)## Loading required package: sysfontsrequire(showtext)## Loading required package: showtext## Loading required package: showtextdbfont_families()## [1] "sans" "serif" "mono" "wqy-microhei"R中自带的三种标准字体家族为：serif（衬线）、sans（无衬线）和mono（等宽）三类。
如果想使用Windows系统中自带的中文字体，首先查看系统中字体存储路径：
font_paths()## [1] "C:\\Windows\\Fonts"进一步查看有哪些可以利用的字体文件：
font_files()## path file family face
## 1 C:/Windows/Fonts arial.ttf Arial Regular
## 2 C:/Windows/Fonts arialbd.ttf Arial Bold
## 3 C:/Windows/Fonts arialbi.ttf Arial Bold Italic
## 4 C:/Windows/Fonts ariali.ttf Arial Italic
## 5 C:/Windows/Fonts ariblk.ttf Arial Black Regular
## 6 C:/Windows/Fonts bahnschrift.ttf Bahnschrift Regular
## 7 C:/Windows/Fonts calibri.ttf Calibri Regular
## 8 C:/Windows/Fonts calibrib.ttf Calibri Bold
## 9 C:/Windows/Fonts calibrii.ttf Calibri Italic
## 10 C:/Windows/Fonts calibril.ttf Calibri Light Regular
## 11 C:/Windows/Fonts calibrili.ttf Calibri Light Italic
## 12 C:/Windows/Fonts calibriz.ttf Calibri Bold Italic
## 13 C:/Windows/Fonts cambria.ttc Cambria Regular
## 14 C:/Windows/Fonts cambriab.ttf Cambria Bold
## 15 C:/Windows/Fonts cambriai.ttf Cambria Italic
## 16 C:/Windows/Fonts cambriaz.ttf Cambria Bold Italic
## 17 C:/Windows/Fonts Candara.ttf Candara Regular
## 18 C:/Windows/Fonts Candarab.ttf Candara Bold
## 19 C:/Windows/Fonts Candarai.ttf Candara Italic
## 20 C:/Windows/Fonts Candaral.ttf Candara Light Regular
## 21 C:/Windows/Fonts Candarali.ttf Candara Light Italic
## 22 C:/Windows/Fonts Candaraz.ttf Candara Bold Italic
## 23 C:/Windows/Fonts comic.ttf Comic Sans MS Regular
## 24 C:/Windows/Fonts comicbd.ttf Comic Sans MS Bold
## 25 C:/Windows/Fonts comici.ttf Comic Sans MS Italic
## 26 C:/Windows/Fonts comicz.ttf Comic Sans MS Bold Italic
## 27 C:/Windows/Fonts consola.ttf Consolas Regular
## 28 C:/Windows/Fonts consolab.ttf Consolas Bold
## 29 C:/Windows/Fonts consolai.ttf Consolas Italic
## 30 C:/Windows/Fonts consolaz.ttf Consolas Bold Italic
## 31 C:/Windows/Fonts constan.ttf Constantia Regular
## 32 C:/Windows/Fonts constanb.ttf Constantia Bold
## 33 C:/Windows/Fonts constani.ttf Constantia Italic
## 34 C:/Windows/Fonts constanz.ttf Constantia Bold Italic
## 35 C:/Windows/Fonts corbel.ttf Corbel Regular
## 36 C:/Windows/Fonts corbelb.ttf Corbel Bold
## 37 C:/Windows/Fonts corbeli.ttf Corbel Italic
## 38 C:/Windows/Fonts corbell.ttf Corbel Light Regular
## 39 C:/Windows/Fonts corbelli.ttf Corbel Light Italic
## 40 C:/Windows/Fonts corbelz.ttf Corbel Bold Italic
## 41 C:/Windows/Fonts cour.ttf Courier New Regular
## 42 C:/Windows/Fonts courbd.ttf Courier New Bold
## 43 C:/Windows/Fonts courbi.ttf Courier New Bold Italic
## 44 C:/Windows/Fonts couri.ttf Courier New Italic
## 45 C:/Windows/Fonts Deng.ttf DengXian Regular
## 46 C:/Windows/Fonts Dengb.ttf DengXian Bold
## 47 C:/Windows/Fonts Dengl.ttf DengXian Light Regular
## 48 C:/Windows/Fonts ebrima.ttf Ebrima Regular
## 49 C:/Windows/Fonts ebrimabd.ttf Ebrima Bold
## 50 C:/Windows/Fonts framd.ttf Franklin Gothic Medium Regular
## 51 C:/Windows/Fonts framdit.ttf Franklin Gothic Medium Italic
## 52 C:/Windows/Fonts Gabriola.ttf Gabriola Regular
## 53 C:/Windows/Fonts gadugi.ttf Gadugi Regular
## 54 C:/Windows/Fonts gadugib.ttf Gadugi Bold
## 55 C:/Windows/Fonts georgia.ttf Georgia Regular
## 56 C:/Windows/Fonts georgiab.ttf Georgia Bold
## 57 C:/Windows/Fonts georgiai.ttf Georgia Italic
## 58 C:/Windows/Fonts georgiaz.ttf Georgia Bold Italic
## 59 C:/Windows/Fonts himalaya.ttf Microsoft Himalaya Regular
## 60 C:/Windows/Fonts holomdl2.ttf HoloLens MDL2 Assets Regular
## 61 C:/Windows/Fonts impact.ttf Impact Regular
## 62 C:/Windows/Fonts Inkfree.ttf Ink Free Regular
## 63 C:/Windows/Fonts javatext.ttf Javanese Text Regular
## 64 C:/Windows/Fonts l_10646.ttf Lucida Sans Unicode Regular
## 65 C:/Windows/Fonts LeelaUIb.ttf Leelawadee UI Bold
## 66 C:/Windows/Fonts LeelawUI.ttf Leelawadee UI Regular
## 67 C:/Windows/Fonts LeelUIsl.ttf Leelawadee UI Semilight Regular
## 68 C:/Windows/Fonts lucon.ttf Lucida Console Regular
## 69 C:/Windows/Fonts malgun.ttf Malgun Gothic Regular
## 70 C:/Windows/Fonts malgunbd.ttf Malgun Gothic Bold
## 71 C:/Windows/Fonts malgunsl.ttf Malgun Gothic Semilight Regular
## 72 C:/Windows/Fonts marlett.ttf Marlett Regular
## 73 C:/Windows/Fonts micross.ttf Microsoft Sans Serif Regular
## 74 C:/Windows/Fonts mingliub.ttc MingLiU-ExtB Regular
## 75 C:/Windows/Fonts mmrtext.ttf Myanmar Text Regular
## 76 C:/Windows/Fonts mmrtextb.ttf Myanmar Text Bold
## 77 C:/Windows/Fonts monbaiti.ttf Mongolian Baiti Regular
## 78 C:/Windows/Fonts msgothic.ttc MS Gothic Regular
## 79 C:/Windows/Fonts msjh.ttc Microsoft JhengHei Regular
## 80 C:/Windows/Fonts msjhbd.ttc Microsoft JhengHei Bold
## 81 C:/Windows/Fonts msjhl.ttc Microsoft JhengHei Light Regular
## 82 C:/Windows/Fonts msyh.ttc Microsoft YaHei Regular
## 83 C:/Windows/Fonts msyhbd.ttc Microsoft YaHei Bold
## 84 C:/Windows/Fonts msyhl.ttc Microsoft YaHei Light Regular
## 85 C:/Windows/Fonts msyi.ttf Microsoft Yi Baiti Regular
## 86 C:/Windows/Fonts mvboli.ttf MV Boli Regular
## 87 C:/Windows/Fonts Nirmala.ttf Nirmala UI Regular
## 88 C:/Windows/Fonts NirmalaB.ttf Nirmala UI Bold
## 89 C:/Windows/Fonts NirmalaS.ttf Nirmala UI Semilight Regular
## 90 C:/Windows/Fonts ntailu.ttf Microsoft New Tai Lue Regular
## 91 C:/Windows/Fonts ntailub.ttf Microsoft New Tai Lue Bold
## 92 C:/Windows/Fonts pala.ttf Palatino Linotype Regular
## 93 C:/Windows/Fonts palab.ttf Palatino Linotype Bold
## 94 C:/Windows/Fonts palabi.ttf Palatino Linotype Bold Italic
## 95 C:/Windows/Fonts palai.ttf Palatino Linotype Italic
## 96 C:/Windows/Fonts phagspa.ttf Microsoft PhagsPa Regular
## 97 C:/Windows/Fonts phagspab.ttf Microsoft PhagsPa Bold
## 98 C:/Windows/Fonts segmdl2.ttf Segoe MDL2 Assets Regular
## 99 C:/Windows/Fonts segoepr.ttf Segoe Print Regular
## 100 C:/Windows/Fonts segoeprb.ttf Segoe Print Bold
## 101 C:/Windows/Fonts segoesc.ttf Segoe Script Regular
## 102 C:/Windows/Fonts segoescb.ttf Segoe Script Bold
## 103 C:/Windows/Fonts segoeui.ttf Segoe UI Regular
## 104 C:/Windows/Fonts segoeuib.ttf Segoe UI Bold
## 105 C:/Windows/Fonts segoeuii.ttf Segoe UI Italic
## 106 C:/Windows/Fonts segoeuil.ttf Segoe UI Light Regular
## 107 C:/Windows/Fonts segoeuisl.ttf Segoe UI Semilight Regular
## 108 C:/Windows/Fonts segoeuiz.ttf Segoe UI Bold Italic
## 109 C:/Windows/Fonts seguibl.ttf Segoe UI Black Regular
## 110 C:/Windows/Fonts seguibli.ttf Segoe UI Black Italic
## 111 C:/Windows/Fonts seguiemj.ttf Segoe UI Emoji Regular
## 112 C:/Windows/Fonts seguihis.ttf Segoe UI Historic Regular
## 113 C:/Windows/Fonts seguili.ttf Segoe UI Light Italic
## 114 C:/Windows/Fonts seguisb.ttf Segoe UI Semibold Regular
## 115 C:/Windows/Fonts seguisbi.ttf Segoe UI Semibold Italic
## 116 C:/Windows/Fonts seguisli.ttf Segoe UI Semilight Italic
## 117 C:/Windows/Fonts seguisym.ttf Segoe UI Symbol Regular
## 118 C:/Windows/Fonts simfang.ttf FangSong Regular
## 119 C:/Windows/Fonts simhei.ttf SimHei Regular
## 120 C:/Windows/Fonts simkai.ttf KaiTi Regular
## 121 C:/Windows/Fonts simsun.ttc SimSun Regular
## 122 C:/Windows/Fonts simsunb.ttf SimSun-ExtB Regular
## 123 C:/Windows/Fonts Sitka.ttc Sitka Small Regular
## 124 C:/Windows/Fonts SitkaB.ttc Sitka Small Bold
## 125 C:/Windows/Fonts SitkaI.ttc Sitka Small Italic
## 126 C:/Windows/Fonts SitkaZ.ttc Sitka Small Bold Italic
## 127 C:/Windows/Fonts sylfaen.ttf Sylfaen Regular
## 128 C:/Windows/Fonts symbol.ttf Symbol Regular
## 129 C:/Windows/Fonts tahoma.ttf Tahoma Regular
## 130 C:/Windows/Fonts tahomabd.ttf Tahoma Bold
## 131 C:/Windows/Fonts taile.ttf Microsoft Tai Le Regular
## 132 C:/Windows/Fonts taileb.ttf Microsoft Tai Le Bold
## 133 C:/Windows/Fonts teamviewer14.otf TeamViewer14 Medium
## 134 C:/Windows/Fonts times.ttf Times New Roman Regular
## 135 C:/Windows/Fonts timesbd.ttf Times New Roman Bold
## 136 C:/Windows/Fonts timesbi.ttf Times New Roman Bold Italic
## 137 C:/Windows/Fonts timesi.ttf Times New Roman Italic
## 138 C:/Windows/Fonts trebuc.ttf Trebuchet MS Regular
## 139 C:/Windows/Fonts trebucbd.ttf Trebuchet MS Bold
## 140 C:/Windows/Fonts trebucbi.ttf Trebuchet MS Bold Italic
## 141 C:/Windows/Fonts trebucit.ttf Trebuchet MS Italic
## 142 C:/Windows/Fonts verdana.ttf Verdana Regular
## 143 C:/Windows/Fonts verdanab.ttf Verdana Bold
## 144 C:/Windows/Fonts verdanai.ttf Verdana Italic
## 145 C:/Windows/Fonts verdanaz.ttf Verdana Bold Italic
## 146 C:/Windows/Fonts webdings.ttf Webdings Regular
## 147 C:/Windows/Fonts wingding.ttf Wingdings Regular
## 148 C:/Windows/Fonts YuGothB.ttc Yu Gothic Bold
## 149 C:/Windows/Fonts YuGothL.ttc Yu Gothic Light Regular
## 150 C:/Windows/Fonts YuGothM.ttc Yu Gothic Medium Regular
## 151 C:/Windows/Fonts YuGothR.ttc Yu Gothic Regular
## version ps_name
## 1 Version 7.00 ArialMT
## 2 Version 7.00 Arial-BoldMT
## 3 Version 7.00 Arial-BoldItalicMT
## 4 Version 7.00 Arial-ItalicMT
## 5 Version 5.23 Arial-Black
## 6 Version 2.01 Bahnschrift
## 7 Version 6.22 Calibri
## 8 Version 6.22 Calibri-Bold
## 9 Version 6.22 Calibri-Italic
## 10 Version 6.22 Calibri-Light
## 11 Version 6.22 Calibri-LightItalic
## 12 Version 6.22 Calibri-BoldItalic
## 13 Version 6.99 Cambria
## 14 Version 6.98 Cambria-Bold
## 15 Version 6.98 Cambria-Italic
## 16 Version 6.98 Cambria-BoldItalic
## 17 Version 5.62 Candara
## 18 Version 5.62 Candara-Bold
## 19 Version 5.62 Candara-Italic
## 20 Version 5.63 Candara-Light
## 21 Version 5.63 Candara-LightItalic
## 22 Version 5.62 Candara-BoldItalic
## 23 Version 5.14 ComicSansMS
## 24 Version 5.14 ComicSansMS-Bold
## 25 Version 5.14 ComicSansMS-Italic
## 26 Version 5.14 ComicSansMS-BoldItalic
## 27 Version 7.00 Consolas
## 28 Version 7.00 Consolas-Bold
## 29 Version 7.00 Consolas-Italic
## 30 Version 7.00 Consolas-BoldItalic
## 31 Version 5.93 Constantia
## 32 Version 5.93 Constantia-Bold
## 33 Version 5.93 Constantia-Italic
## 34 Version 5.93 Constantia-BoldItalic
## 35 Version 5.90 Corbel
## 36 Version 5.90 Corbel-Bold
## 37 Version 5.90 Corbel-Italic
## 38 Version 5.90 CorbelLight
## 39 Version 5.90 CorbelLight-Italic
## 40 Version 5.90 Corbel-BoldItalic
## 41 Version 6.92 CourierNewPSMT
## 42 Version 6.92 CourierNewPS-BoldMT
## 43 Version 6.91 CourierNewPS-BoldItalicMT
## 44 Version 6.91 CourierNewPS-ItalicMT
## 45 Version 1.17 DengXian
## 46 Version 1.17 DengXian-Bold
## 47 Version 1.17 DengXian-Light
## 48 Version 5.12 Ebrima
## 49 Version 5.12 Ebrima-Bold
## 50 Version 5.02 FranklinGothic-Medium
## 51 Version 5.01 FranklinGothic-MediumItalic
## 52 Version 5.93 Gabriola
## 53 Version 1.12 Gadugi
## 54 Version 1.12 Gadugi-Bold
## 55 Version 5.59 Georgia
## 56 Version 5.59 Georgia-Bold
## 57 Version 5.59 Georgia-Italic
## 58 Version 5.59 Georgia-BoldItalic
## 59 Version 5.23 Microsoft Himalaya
## 60 Version 2.02 HoloLensMDL2Assets
## 61 Version 5.11 Impact
## 62 Version 1.00 InkFree
## 63 Version 1.09 JavaneseText
## 64 Version 5.01 LucidaSansUnicode
## 65 Version 5.05 LeelawadeeUI-Bold
## 66 Version 5.05 LeelawadeeUI
## 67 Version 5.05 LeelawadeeUI-Semilight
## 68 Version 5.01 LucidaConsole
## 69 Version 6.68 MalgunGothic
## 70 Version 6.68 MalgunGothicBold
## 71 Version 6.68 MalgunGothic-Semilight
## 72 Version 5.01 Marlett
## 73 Version 7.00 MicrosoftSansSerif
## 74 Version 7.02 MingLiU-ExtB
## 75 Version 1.18 MyanmarText
## 76 Version 1.18 MyanmarText-Bold
## 77 Version 5.53 MongolianBaiti
## 78 Version 5.31 MS-Gothic
## 79 Version 6.14 MicrosoftJhengHeiRegular
## 80 Version 6.13 MicrosoftJhengHeiBold
## 81 Version 6.14 MicrosoftJhengHeiLight
## 82 Version 6.25 MicrosoftYaHei
## 83 Version 6.25 MicrosoftYaHei-Bold
## 84 Version 6.23 MicrosoftYaHeiLight
## 85 Version 6.00 Microsoft-Yi-Baiti
## 86 Version 6.84 MVBoli
## 87 Version 1.37 NirmalaUI
## 88 Version 1.37 NirmalaUI-Bold
## 89 Version 1.37 NirmalaUI-Semilight
## 90 Version 5.99 MicrosoftNewTaiLue
## 91 Version 5.99 MicrosoftNewTaiLue-Bold
## 92 Version 5.03 PalatinoLinotype-Roman
## 93 Version 5.03 PalatinoLinotype-Bold
## 94 Version 5.03 PalatinoLinotype-BoldItalic
## 95 Version 5.03 PalatinoLinotype-Italic
## 96 Version 6.00 MicrosoftPhagsPa
## 97 Version 6.00 MicrosoftPhagsPa-Bold
## 98 Version 1.68 SegoeMDL2Assets
## 99 Version 5.04 SegoePrint
## 100 Version 5.04 SegoePrint-Bold
## 101 Version 5.02 SegoeScript
## 102 Version 5.02 SegoeScript-Bold
## 103 Version 5.60 SegoeUI
## 104 Version 5.60 SegoeUI-Bold
## 105 Version 5.30 SegoeUI-Italic
## 106 Version 5.60 SegoeUI-Light
## 107 Version 5.60 SegoeUI-Semilight
## 108 Version 5.30 SegoeUI-BoldItalic
## 109 Version 2.01 SegoeUIBlack
## 110 Version 2.01 SegoeUIBlack-Italic
## 111 Version 1.27 SegoeUIEmoji
## 112 Version 1.03 SegoeUIHistoric
## 113 Version 5.30 SegoeUI-LightItalic
## 114 Version 5.60 SegoeUI-Semibold
## 115 Version 5.30 SegoeUI-SemiboldItalic
## 116 Version 5.30 SegoeUI-SemilightItalic
## 117 Version 6.23 SegoeUISymbol
## 118 Version 5.01 FangSong
## 119 Version 5.03 SimHei
## 120 Version 5.01 KaiTi
## 121 Version 5.16 SimSun
## 122 Version 5.03 SimSun-ExtB
## 123 Version 1.12 SitkaSmall
## 124 Version 1.12 SitkaSmall-Bold
## 125 Version 1.12 SitkaSmall-Italic
## 126 Version 1.12 SitkaSmall-BoldItalic
## 127 Version 5.06 Sylfaen
## 128 Version 5.01 SymbolMT
## 129 Version 7.00 Tahoma
## 130 Version 7.00 Tahoma-Bold
## 131 Version 6.00 MicrosoftTaiLe
## 132 Version 6.00 MicrosoftTaiLe-Bold
## 133 Version 014.10 TeamViewer14
## 134 Version 7.00 TimesNewRomanPSMT
## 135 Version 7.00 TimesNewRomanPS-BoldMT
## 136 Version 7.00 TimesNewRomanPS-BoldItalicMT
## 137 Version 7.00 TimesNewRomanPS-ItalicMT
## 138 Version 5.15 TrebuchetMS
## 139 Version 5.15 TrebuchetMS-Bold
## 140 Version 5.15 Trebuchet-BoldItalic
## 141 Version 5.15 TrebuchetMS-Italic
## 142 Version 5.33 Verdana
## 143 Version 5.33 Verdana-Bold
## 144 Version 5.33 Verdana-Italic
## 145 Version 5.33 Verdana-BoldItalic
## 146 Version 5.01 Webdings
## 147 Version 5.01 Wingdings-Regular
## 148 Version 1.85 YuGothic-Bold
## 149 Version 1.85 YuGothic-Light
## 150 Version 1.85 YuGothic-Medium
## 151 Version 1.85 YuGothic-Regular其中宋体文件是simsun.ttc，黑体文件是：simhei.ttf，楷体文件是simkai.ttf，微软雅黑是msyh.ttf和msyhbd.ttf。
尝试在R环境中加入黑体（如果字体是在Windows系统的默认字体库中，regular可以不用指定路径）：
font_add(family = "heiti",regular = "simhei.ttf")
font_add(family = "kaiti",regular = "simkai.ttf")此时查看R中自带字体，你会发现多了“heiti”和“kaiti”。
font.families()## 'font.families()' is now renamed to 'font_families()'
## The old version still works, but consider using the new function in future code## [1] "sans" "serif" "mono" "wqy-microhei"
## [5] "heiti" "kaiti"然后我们在画图中使用黑体，借用showtext包作者邱逸轩的这篇文章showtext：字体，好玩的字体和好玩的图形中的r示例代码：
需要注意，rstudio自带的Plots面板中绘出的图形不显示自定义字体，这也是以前总是觉得设置自定义字体不成功的原因。在运行下面的代码前，调用windows()函数打开一个新的图形接收窗口，下边代码绘制的图形会显示其中。
如果你打算在Rmd文档中使用showtext包，请在chunk头参数中设置fig.showtext=TRUE。
showtext_auto() #这样代码非常重要
set.seed(123)
plot(1, xlim = c(-3, 3), ylim = c(-3, 3), type = "n")
text(runif(100, -3, 3), runif(100, -3, 3),
intToUtf8(round(runif(100, 19968, 40869)), multiple = TRUE),
col = rgb(runif(100), runif(100), runif(100), 0.5 + runif(100)/2),
cex = 2, family = "heiti") # 指定heiti字体
title("随机汉字", family = "kaiti") # 指定kaiti字体
试一下ggplot2作图。
require(ggplot2)## Loading required package: ggplot2xy <- data.frame(x=rnorm(100),y=rnorm(100))
showtext_auto()
scatter.plot <- ggplot(data = xy,aes(x=x,y=y))+
geom_point(shape=21)+
labs(x="均值为0，标准差为1的随机正态分布",y="均值为0，标准差为1的随机正态分布")+
theme_grey(base_size = 30,base_family = "heiti")
print(scatter.plot)
Figure 1: 基于0,1正态分布的散点图
Ok!大功告成！