“如何修复”;未能加载cairo DLL";在R?

“如何修复”;未能加载cairo DLL";在R?,r,cairo,R,Cairo,我遇到此警告消息,将停止执行 Saving 8.04 x 5.67 in image Warning messages: 1: In dev(file = filename, width = dim[1], height = dim[2], ...) : unable to load shared object '/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so': dlopen(/usr/local/

我遇到此警告消息,将停止执行

Saving 8.04 x 5.67 in image
Warning messages:
1: In dev(file = filename, width = dim[1], height = dim[2], ...) :
  unable to load shared object '/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so':

  dlopen(/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so, 6): image not found
2: In dev(file = filename, width = dim[1], height = dim[2], ...) :
  failed to load cairo DLL

这是为我生成警告的代码

library(tidyverse)
library(cowplot)

d <- sample_n(diamonds, 50)
g <- ggplot(d, aes(carat, price)) + geom_point()
gg <- list(g,g,g)

plot_grid(plotlist = gg, nrow=1) %>% 
  cowplot::ggsave(filename = paste0("~/Desktop/", paste0("testing", ".svg")), device = cairo_ps)

我只提供了一台Windows机器,但以下两种方法都有效地保存了cowplot的
.svg
.eps
(安装软件包
svglite
):

#安装程序包(svglite)
图书馆(tidyverse)
图书馆(cowplot)

dR的自制版本不再支持
cairo
(),因此,如果通过
brew install R
安装R,base R中的
svg()
cairo\u pdf()
cairo\u ps()
等图形设备将无法工作。您必须使用其他图形设备(例如,
png
jpeg
pdf
)。如果需要SVG输出,
ggsave()
需要svglite包,并使用
svglite::svglite()
将绘图保存到SVG文件


如果您确实想使用自制软件安装R,我建议
brew cask安装R

我不确定macOS。。。但是您的系统中安装了cairo吗?您检查过了吗?谢谢您的回复!我已经浏览了大量试图调试此问题的在线资源。我的电脑上确实安装了
cairo
——通过
homebrew
。我还重新安装了我的
Quartz
。是的!这对我有用!我是出于某种原因-设置
device=cairo\u ps
是主要问题。如果将来有人在读这篇文章,我想就让
ggsave
的内部工作通过
.svg
.etc
结尾来处理文件名吧。
R version 3.5.0 (2018-04-23)
Platform: x86_64-apple-darwin17.6.0 (64-bit)
Running under: macOS High Sierra 10.13.5

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib

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] parallel  stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] cowplot_0.9.2     forcats_0.3.0     stringr_1.3.1     dplyr_0.7.5      
 [5] purrr_0.2.5       readr_1.1.1       tidyr_0.8.1       tibble_1.4.2     
 [9] ggplot2_2.2.1     tidyverse_1.2.1   doParallel_1.0.11 iterators_1.0.9  
[13] foreach_1.4.4     lmerTest_3.0-1    lme4_1.1-17       Matrix_1.2-14    

loaded via a namespace (and not attached):
 [1] tidyselect_0.2.4  reshape2_1.4.3    splines_3.5.0     haven_1.1.1      
 [5] lattice_0.20-35   argparse_1.1.1    colorspace_1.3-2  getopt_1.20.2    
 [9] yaml_2.1.19       rlang_0.2.1       nloptr_1.0.4      pillar_1.2.3     
[13] foreign_0.8-70    glue_1.2.0        readxl_1.1.0      modelr_0.1.2     
[17] bindrcpp_0.2.2    bindr_0.1.1       plyr_1.8.4        cellranger_1.1.0 
[21] munsell_0.4.3     findpython_1.0.3  gtable_0.2.0      rvest_0.3.2      
[25] codetools_0.2-15  psych_1.8.4       labeling_0.3      broom_0.4.4      
[29] proto_1.0.0       Rcpp_0.12.17      scales_0.5.0      jsonlite_1.5     
[33] mnormt_1.5-5      hms_0.4.2         stringi_1.2.2     numDeriv_2016.8-1
[37] grid_3.5.0        cli_1.0.0         tools_3.5.0       magrittr_1.5     
[41] lazyeval_0.2.1    crayon_1.3.4      pkgconfig_2.0.1   MASS_7.3-49      
[45] xml2_1.2.0        lubridate_1.7.4   rstudioapi_0.7    assertthat_0.2.0 
[49] minqa_1.2.4       httr_1.3.1        R6_2.2.2          nlme_3.1-137     
[53] compiler_3.5.0   
# install.packages(svglite)
library(tidyverse)
library(cowplot)

d <- sample_n(diamonds, 50)
g <- ggplot(d, aes(carat, price)) + geom_point()
gg <- list(g,g,g)

plot_grid(plotlist = gg, nrow=1)
ggsave(filename = "testing.svg")
ggsave(filename = "testing.eps")