Error in use_sf(): sf or stars not available

[RobinKohrs]

Maybe I'm missing something very obvious, but I can't call use_sf(). I get the following output:

library(sf)
#> Linking to GEOS 3.6.1, GDAL 2.2.3, PROJ 4.9.3
library(rgrass7)
#> Lade nötiges Paket: XML
#> GRASS GIS interface loaded with GRASS version: (GRASS not running)
use_sf()
#> Error in use_sf(): sf or stars not available

^{Created on 2019-12-03 by the reprex package (v0.3.0)}

Session info

``` r devtools::session_info() #> - Session info --------------------------------------------------------------- #> setting value #> version R version 3.6.1 (2019-07-05) #> os Windows 10 x64 #> system x86_64, mingw32 #> ui RTerm #> language (EN) #> collate German_Germany.1252 #> ctype German_Germany.1252 #> tz Europe/Berlin #> date 2019-12-03 #> #> - Packages ------------------------------------------------------------------- #> package * version date lib source #> assertthat 0.2.1 2019-03-21 [1] CRAN (R 3.6.1) #> backports 1.1.5 2019-10-02 [1] CRAN (R 3.6.1) #> callr 3.3.2 2019-09-22 [1] CRAN (R 3.6.1) #> class 7.3-15 2019-01-01 [2] CRAN (R 3.6.1) #> classInt 0.4-2 2019-10-17 [1] CRAN (R 3.6.1) #> cli 1.9.9.9000 2019-11-19 [1] Github (r-lib/cli@24a9bd8) #> crayon 1.3.4 2017-09-16 [1] CRAN (R 3.6.1) #> DBI 1.0.0 2018-05-02 [1] CRAN (R 3.6.1) #> desc 1.2.0 2018-05-01 [1] CRAN (R 3.6.1) #> devtools 2.2.1 2019-09-24 [1] CRAN (R 3.6.1) #> digest 0.6.22 2019-10-21 [1] CRAN (R 3.6.1) #> e1071 1.7-2 2019-06-05 [1] CRAN (R 3.6.1) #> ellipsis 0.3.0 2019-09-20 [1] CRAN (R 3.6.1) #> evaluate 0.14 2019-05-28 [1] CRAN (R 3.6.1) #> fansi 0.4.0 2018-10-05 [1] CRAN (R 3.6.1) #> fs 1.3.1 2019-05-06 [1] CRAN (R 3.6.1) #> glue 1.3.1 2019-03-12 [1] CRAN (R 3.6.1) #> highr 0.8 2019-03-20 [1] CRAN (R 3.6.1) #> hms 0.5.2 2019-10-30 [1] CRAN (R 3.6.1) #> htmltools 0.4.0 2019-10-04 [1] CRAN (R 3.6.1) #> KernSmooth 2.23-15 2015-06-29 [2] CRAN (R 3.6.1) #> knitr 1.26 2019-11-12 [1] CRAN (R 3.6.1) #> magrittr 1.5 2014-11-22 [1] CRAN (R 3.6.1) #> memoise 1.1.0 2017-04-21 [1] CRAN (R 3.6.1) #> pillar 1.4.2 2019-06-29 [1] CRAN (R 3.6.1) #> pkgbuild 1.0.6 2019-10-09 [1] CRAN (R 3.6.1) #> pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 3.6.1) #> pkgload 1.0.2 2018-10-29 [1] CRAN (R 3.6.1) #> prettyunits 1.0.2 2015-07-13 [1] CRAN (R 3.6.1) #> processx 3.4.1 2019-07-18 [1] CRAN (R 3.6.1) #> progress 1.2.2 2019-05-16 [1] CRAN (R 3.6.1) #> ps 1.3.0 2018-12-21 [1] CRAN (R 3.6.1) #> R6 2.4.0 2019-02-14 [1] CRAN (R 3.6.1) #> Rcpp 1.0.2 2019-07-25 [1] CRAN (R 3.6.1) #> remotes 2.1.0 2019-06-24 [1] CRAN (R 3.6.1) #> rgrass7 * 0.2-3 2019-12-03 [1] Github (rsbivand/rgrass7@d50e4bf) #> rlang 0.4.1 2019-10-24 [1] CRAN (R 3.6.1) #> rmarkdown 1.17 2019-11-13 [1] CRAN (R 3.6.1) #> rprojroot 1.3-2 2018-01-03 [1] CRAN (R 3.6.1) #> sessioninfo 1.1.1 2018-11-05 [1] CRAN (R 3.6.1) #> sf * 0.8-0 2019-09-17 [1] CRAN (R 3.6.1) #> stringi 1.4.3 2019-03-12 [1] CRAN (R 3.6.0) #> stringr 1.4.0 2019-02-10 [1] CRAN (R 3.6.1) #> testthat 2.2.1 2019-07-25 [1] CRAN (R 3.6.1) #> tibble 2.1.3 2019-06-06 [1] CRAN (R 3.6.1) #> units 0.6-5 2019-10-08 [1] CRAN (R 3.6.1) #> usethis 1.5.1 2019-07-04 [1] CRAN (R 3.6.1) #> vctrs 0.2.0 2019-07-05 [1] CRAN (R 3.6.1) #> withr 2.1.2 2018-03-15 [1] CRAN (R 3.6.1) #> xfun 0.11 2019-11-12 [1] CRAN (R 3.6.1) #> XML * 3.98-1.20 2019-06-06 [1] CRAN (R 3.6.0) #> yaml 2.2.0 2018-07-25 [1] CRAN (R 3.6.0) #> zeallot 0.1.0 2018-01-28 [1] CRAN (R 3.6.1) #> #> [1] C:/Users/kohrs/Documents/R/win-library/3.6 #> [2] C:/Program Files/R/R-3.6.1/library ```

[rsbivand]

Are *sf' and stars installed?

[RobinKohrs]

Thanks for the help. I only had sf installed. Together with stars it works fine now. Sorry for the unnecessary issue. I didn't know, that stars also needs to be installed if I just want to work with sf .