I'm not understanding how the tidyverse handles date formats. output of sessionInfo() at the end of my message.
dateRanges <- structure(list(apptType = structure(1:2, .Label = c("initial visit", "start of treatment visit"), class = "factor"), minMadeRequestDates = structure(c(18124, 18115), class = "Date"), maxMadeRequestDates = structure(c(18187, 18199), class = "Date"), minApptDate = structure(c(18129, 18129 ), class = "Date"), maxApptDate = structure(c(18199, 18214), class = "Date")), class = c("tbl_df", "tbl", "data.frame"), row.names = c(NA, -2L)) str(dateRanges) ## produces desired result format(dateRanges, format = "%d %b %Y") ## does not produce desired result library(dplyr) format(dateRanges, format = "%d %b %Y") ## rather cumbersome, and also does not produce the desired output mutate(dateRanges, minMRD = as.Date(minMadeRequestDates, format = "%d %b %Y")) How does one change the format of a date variable inside a tibble when dplyr is loaded? Thanks Chris Ryan ======== session info =========== > sessionInfo() R version 3.6.1 (2019-07-05) Platform: i386-w64-mingw32/i386 (32-bit) Running under: Windows 7 (build 7601) Service Pack 1 Matrix products: default locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] dplyr_0.8.3 loaded via a namespace (and not attached): [1] Rcpp_1.0.2 fansi_0.4.0 zeallot_0.1.0 utf8_1.1.4 crayon_1.3.4 assertthat_0.2.1 R6_2.4.0 [8] backports_1.1.5 magrittr_1.5 pillar_1.4.2 rlang_0.4.0 cli_1.1.0 vctrs_0.2.0 glue_1.3.1 [15] purrr_0.3.3 compiler_3.6.1 pkgconfig_2.0.3 tidyselect_0.2.5 tibble_2.1.3 ==================================== [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.