ggmap的get_map返回'gzfile中的错误(文件,"rb"):无法打开连接'

Question

我有一些R代码用ggmap在地图上绘制数据.它上周工作正常.但是,现在当我运行该行来获取地图时:

emap <- get_map(c(-2.503704,43.18735),zoom=9,maptype="roadmap",color="bw")  

我收到以下错误:

Error in gzfile(file, "rb") : cannot open the connection
In addition: Warning message:
In gzfile(file, "rb") :
  cannot open compressed file '/var/folders/2w/2wSOAL2LFUC+2QkRaR1wI++++TI/-Tmp-//Rtmpj0TMx5/ggmap/index.rds', probable reason 'No such file or directory'

我搜索了这个论坛和网络,但找不到任何其他线程讨论此错误.

任何帮助深表感谢.此致,Noelia

PS:sessionInfo()返回以下内容:

R version 3.1.2 (2014-10-31)
Platform: x86_64-apple-darwin10.8.0 (64-bit)

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] mapproj_1.2-2  maps_2.3-9     ggmap_2.4      dplyr_0.4.1        xtable_1.7-4   ggplot2_1.0.1  reshape2_1.4.1

loaded via a namespace (and not attached):
[1] assertthat_0.1      colorspace_1.2-6    DBI_0.3.1           digest_0.6.8        geosphere_1.3-13    grid_3.1.2         
[7] gtable_0.1.2        jpeg_0.1-8          labeling_0.3        lattice_0.20-31     lazyeval_0.1.10     magrittr_1.5       
[13] MASS_7.3-40         munsell_0.4.2       parallel_3.1.2      plyr_1.8.1          png_0.1-7           proto_0.3-10       
[19] Rcpp_0.11.5         RgoogleMaps_1.2.0.7 rjson_0.2.15        RJSONIO_1.3-0       scales_0.2.4        sp_1.0-17          
[25] stringr_0.6.2       tools_3.1.2  

Answer 1

我也遇到过同样的错误，并且代码以前也有效。您可能已经尝试过此操作，但我通过简单地结束 R 会话并重新启动它来解决它。

如果这不起作用，请尝试卸载/重新安装 R(Studio)，或至少卸载相关的软件包。