将不在extrafonts库中的字体添加到R

在安装了R的extrafonts库并检查了它必须提供的字体后，它得出了以下列表：

[1] ".Keyboard"               "System Font"             "Andale Mono"             "Apple Braille"           "AppleMyungjo"           
[6] "Arial Black"             "Arial"                   "Arial Narrow"            "Arial Rounded MT Bold"   "Arial Unicode MS"       
[11] "Batang"                  "Bodoni Ornaments"        "Bodoni 72 Smallcaps"     "Bookshelf Symbol 7"      ""                       
[16] "Brush Script MT"         "Calibri"                 "Calibri Light"           "Cambria"                 "Cambria Math"           
[21] "Candara"                 "Comic Sans MS"           "Consolas"                "Constantia"              "Corbel"                 
[26] "Courier New"             "DIN Alternate"           "DIN Condensed"           "Franklin Gothic Book"    "Franklin Gothic Medium" 
[31] "Gabriola"                "Georgia"                 "Gill Sans MT"            "Gulim"                   "Impact"                 
[36] "Khmer Sangam MN"         "Lao Sangam MN"           "Lucida Console"          "Lucida Sans Unicode"     "Luminari"               
[41] "Marlett"                 "Meiryo"                  "Microsoft Yi Baiti"      "Microsoft Himalaya"      "Microsoft Sans Serif"   
[46] "Microsoft Tai Le"        "MingLiU_HKSCS-ExtB"      "MingLiU_HKSCS"           "MingLiU"                 "MingLiU-ExtB"           
[51] "Mongolian Baiti"         "MS Gothic"               "MS Mincho"               "MS PGothic"              "MS PMincho"             
[56] "MS Reference Sans Serif" "MS Reference Specialty"  "Palatino Linotype"       "Perpetua"                "PMingLiU"               
[61] "PMingLiU-ExtB"           "SimHei"                  "SimSun"                  "SimSun-ExtB"             "Tahoma"                 
[66] "Times New Roman"         "Trattatello"             "Trebuchet MS"            "Tw Cen MT"               "Verdana"                
[71] "Webdings"                "Wingdings"               "Wingdings 2"             "Wingdings 3"    

但是我需要使用National 2和National（）

---

有没有办法下载这些自定义字体供R在ggplot中使用，即使它们不包含在extrafonts中如果没有，是否有人知道这些字体是否与National 2 Condented和National 2特别相似？

首先，您获得所需的字体并将其安装到您的系统上。与R无关。通过检查任何常规程序，如MS Word或其他程序，测试字体是否工作

然后打开R，加载

extrafont

包并导入您安装的字体。我认为它目前只适用于

.ttf

字体

library(extrafont)
font_import(pattern="Roboto")

如果这样做有效，则此步骤将把这些字体添加到extrafontdb中。你会看到像这样的东西

> font_import(pattern="Roboto",prompt=FALSE)
Scanning ttf files in C:\windows\Fonts ...
Extracting .afm files from .ttf files...
C:\Windows\Fonts\Roboto-Black.ttf => C:/R/R-3.5.1/library/extrafontdb/metrics/Roboto-Black
C:\Windows\Fonts\Roboto-BlackItalic.ttf => C:/R/R-3.5.1/library/extrafontdb/metrics/Roboto-BlackItalic
...
C:\Windows\Fonts\RobotoCondensed-Regular.ttf => C:/R/R-3.5.1/library/extrafontdb/metrics/RobotoCondensed-Regular
Found FontName for 30 fonts.
Scanning afm files in C:/R/R-3.5.1/library/extrafontdb/metrics
Writing font table in C:/R/R-3.5.1/library/extrafontdb/fontmap/fonttable.csv
Writing Fontmap to C:/R/R-3.5.1/library/extrafontdb/fontmap/Fontmap...

这是一次性的事情。一旦导入，从那时起，它将在R中可用。你所要做的就是在下面跑

library(extrafont)
# for windows
windowsFonts(sans="Roboto")
loadfonts(device="win")
loadfonts(device="postscript")

现在默认值应该已经改变了

plot(x=1:5,y=1:5)

ggplot

具有需要更改的

base\u族

，以及文本几何图形的

family

参数

library(ggplot2)
p <- ggplot(data.frame(x=1:5,y=1:5),aes(x,y))+
  geom_point()+
  geom_text(aes(label=y),nudge_x=0.5,family="Roboto")+
  theme_bw(base_family="Roboto")
p

PDF是一种痛苦。它们有一个额外的

系列

参数。还有一些关于嵌入和东西。请参阅下面的链接

ggsave("plot.pdf",p,family="Roboto")

您需要的所有信息都是。

使用软件包的解决方案：

以下是生成的绘图：

---

我使用了字体文件的测试版本，在您的情况下，只需将

常规

和

粗体

参数更改为文件的实际路径。

您是否已经在系统范围内安装了这些字体，以便它们可以自动用于其他程序（例如Microsoft Word）？我认为如果你从那里开始，通过操作系统的默认安装方法安装字体通常会更容易。只要下载字体，然后右键单击它们->安装（如果你在Windows上）。然后在RFYI中再次运行“font_import（）”，对于其他类型的字体，可以使用包

ggsave("plot.pdf",p,family="Roboto")

library(showtext)
## Add the font with the corresponding font faces
font_add("national2",
    regular = "National2CondensedTest-Regular.otf",
    bold = "National2CondensedTest-Bold.otf")
## Automatically use showtext to render plots
showtext_auto()

library(ggplot2)
p = ggplot(NULL, aes(x = 1, y = 1)) + ylim(0.8, 1.2) +
    annotate("text", 1, 1.1, label = "National 2 Condensed Bold",
             family = "national2", fontface = "bold", size = 15) +
    annotate("text", 1, 0.9, label = "National 2 Condensed Regular",
             family = "national2", size = 12) +
    theme(axis.title = element_blank(),
          axis.ticks = element_blank(),
          axis.text  = element_blank())

ggsave("test.pdf", p, width = 8, height = 4)