I am learning time-to-event analysis from the DataCamp course.
When I want to write the code in pipeline with function survival::Surv function, I get this error.
library(survival)
library(tidyverse)
data_frame(
time = c(5,6,3,4,4)
,event = c(1,0,0,1,1)
) %>%
Surv(.$time,.$event)
#> Error in Surv(., .$time, .$event): Time variable is not numeric
Created on 2018-12-25 by the reprex package (v0.2.1)
However, if I do the same logic with middle variables, all works.
time <- c(5, 6, 2, 4, 4)
event <- c(1, 0, 0, 1, 1)
library("survival")
Surv(time, event)
#> [1] 5 6+ 2+ 4 4
Created on 2018-12-25 by the reprex package (v0.2.1)
Here is my session info.
"si"
#> [1] "si"
Created on 2018-12-25 by the reprex package (v0.2.1)
Session info
devtools::session_info()
#> ─ Session info ──────────────────────────────────────────────────────────
#> setting value
#> version R version 3.5.1 (2018-07-02)
#> os macOS 10.14.1
#> system x86_64, darwin15.6.0
#> ui X11
#> language (EN)
#> collate zh_CN.UTF-8
#> ctype zh_CN.UTF-8
#> tz Asia/Shanghai
#> date 2018-12-25
#>
#> ─ Packages ──────────────────────────────────────────────────────────────
#> package * version date lib source
#> assertthat 0.2.0 2017-04-11 [1] CRAN (R 3.5.0)
#> backports 1.1.2 2017-12-13 [1] CRAN (R 3.5.0)
#> base64enc 0.1-3 2015-07-28 [1] CRAN (R 3.5.0)
#> callr 3.0.0 2018-08-24 [1] CRAN (R 3.5.0)
#> cli 1.0.1 2018-09-25 [1] CRAN (R 3.5.0)
#> crayon 1.3.4 2017-09-16 [1] CRAN (R 3.5.0)
#> desc 1.2.0 2018-05-01 [1] CRAN (R 3.5.0)
#> devtools 2.0.1 2018-10-26 [1] CRAN (R 3.5.1)
#> digest 0.6.18 2018-10-10 [1] CRAN (R 3.5.0)
#> evaluate 0.12 2018-10-09 [1] CRAN (R 3.5.0)
#> fs 1.2.6 2018-08-23 [1] CRAN (R 3.5.0)
#> glue 1.3.0 2018-07-17 [1] CRAN (R 3.5.0)
#> htmltools 0.3.6 2017-04-28 [1] CRAN (R 3.5.0)
#> knitr 1.20 2018-02-20 [1] CRAN (R 3.5.0)
#> magrittr 1.5 2014-11-22 [1] CRAN (R 3.5.0)
#> memoise 1.1.0 2017-04-21 [1] CRAN (R 3.5.0)
#> pkgbuild 1.0.2 2018-10-16 [1] CRAN (R 3.5.0)
#> pkgload 1.0.2 2018-10-29 [1] CRAN (R 3.5.0)
#> prettyunits 1.0.2 2015-07-13 [1] CRAN (R 3.5.0)
#> processx 3.2.0 2018-08-16 [1] CRAN (R 3.5.0)
#> ps 1.2.1 2018-11-06 [1] CRAN (R 3.5.0)
#> R6 2.3.0 2018-10-04 [1] CRAN (R 3.5.0)
#> Rcpp 1.0.0 2018-11-07 [1] CRAN (R 3.5.0)
#> remotes 2.0.2 2018-10-30 [1] CRAN (R 3.5.0)
#> rlang 0.3.0.1 2018-10-25 [1] CRAN (R 3.5.0)
#> rmarkdown 1.10 2018-06-11 [1] CRAN (R 3.5.0)
#> rprojroot 1.3-2 2018-01-03 [1] CRAN (R 3.5.0)
#> sessioninfo 1.1.1 2018-11-05 [1] CRAN (R 3.5.0)
#> stringi 1.2.4 2018-07-20 [1] CRAN (R 3.5.0)
#> stringr 1.3.1 2018-05-10 [1] CRAN (R 3.5.0)
#> testthat 2.0.0 2017-12-13 [1] CRAN (R 3.5.0)
#> usethis 1.4.0 2018-08-14 [1] CRAN (R 3.5.0)
#> withr 2.1.2 2018-03-15 [1] CRAN (R 3.5.0)
#> yaml 2.2.0 2018-07-25 [1] CRAN (R 3.5.0)
#>
#> [1] /Library/Frameworks/R.framework/Versions/3.5/Resources/library