使用geom_sf绘制空间对象时遇到麻烦。
nc <- sf::st_read(system.file("shape/nc.shp", package = "sf"), quiet = TRUE)
ggplot(nc) +
geom_sf(aes(fill = AREA))
Error: 'st_normalize' is not an exported object from 'namespace:sf'
我在做什么错？这是版本问题吗？这是我的会话信息：
sessionInfo()
R version 3.5.0 (2018-04-23)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)
Matrix products: default
locale:
[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] sf_0.7-2 forcats_0.3.0 stringr_1.3.1 dplyr_0.8.3 purrr_0.3.3 readr_1.3.0
[7] tidyr_0.8.3 tibble_2.1.3 ggplot2_3.2.1 tidyverse_1.2.1
loaded via a namespace (and not attached):
[1] Rcpp_1.0.1 lubridate_1.7.4 lattice_0.20-35 class_7.3-14
[5] formula.tools_1.7.1 assertthat_0.2.0 zeallot_0.1.0 digest_0.6.18
[9] R6_2.3.0 cellranger_1.1.0 plyr_1.8.4 backports_1.1.3
[13] e1071_1.7-0 spam_2.2-1 httr_1.4.0 pillar_1.4.2
[17] rlang_0.4.0 lazyeval_0.2.1 readxl_1.2.0 rstudioapi_0.10
[21] data.table_1.11.8 raster_2.8-4 Matrix_1.2-14 checkmate_1.8.5
[25] rgdal_1.3-6 foreign_0.8-70 RCurl_1.95-4.11 munsell_0.5.0
[29] broom_0.5.2 compiler_3.5.0 metR_0.5.0 modelr_0.1.2
[33] pkgconfig_2.0.2 tidyselect_0.2.5 gridExtra_2.3 codetools_0.2-15
[37] crayon_1.3.4 withr_2.1.2 bitops_1.0-6 grid_3.5.0
[41] nlme_3.1-137 jsonlite_1.6 gtable_0.2.0 DBI_1.0.0
[45] magrittr_1.5 units_0.6-2 scales_1.0.0 cli_1.1.0
[49] stringi_1.2.4 sp_1.2-7 xml2_1.2.0 generics_0.0.2
[53] vctrs_0.2.0 Formula_1.2-3 tools_3.5.0 glue_1.3.1
[57] maps_3.3.0 hms_0.5.0 fields_9.6 yaml_2.2.0
[61] colorspace_1.3-2 maptools_0.9-4 operator.tools_1.6.3 classInt_0.3-1
[65] rvest_0.3.2 dotCall64_1.0-0 memoise_1.1.0 haven_2.0.0