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June 23, 2017 03:52
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unnesting multi-column dataframes
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| # Machine A: Working as desired. | |
| > devtools::session_info() | |
| Session info ------------------------------------------------------------------- | |
| setting value | |
| version R version 3.3.1 (2016-06-21) | |
| system x86_64, linux-gnu | |
| ui X11 | |
| language (EN) | |
| collate en_US.UTF-8 | |
| tz America/Chicago | |
| date 2017-06-22 | |
| Packages ----------------------------------------------------------------------- | |
| package * version date source | |
| assertthat 0.1 2013-12-06 CRAN (R 3.3.1) | |
| DBI 0.6-1 2017-04-01 cran (@0.6-1) | |
| devtools 1.12.0 2016-12-05 CRAN (R 3.3.1) | |
| digest 0.6.12 2017-01-27 cran (@0.6.12) | |
| dplyr * 0.5.0 2016-06-24 CRAN (R 3.3.1) | |
| lazyeval 0.2.0 2016-06-12 CRAN (R 3.3.1) | |
| magrittr 1.5 2014-11-22 cran (@1.5) | |
| memoise 1.0.0 2016-01-29 CRAN (R 3.3.1) | |
| R6 2.2.0 2016-10-05 cran (@2.2.0) | |
| Rcpp 0.12.10 2017-03-19 cran (@0.12.10) | |
| rstudioapi 0.6 2016-06-27 CRAN (R 3.3.1) | |
| tibble 1.3.0 2017-04-01 cran (@1.3.0) | |
| tidyr * 0.6.3 2017-05-15 CRAN (R 3.3.1) | |
| withr 1.0.2 2016-06-20 CRAN (R 3.3.1) | |
| > f = function()data.frame(a=1:3,b=3:1) | |
| > data.frame(g=1:3) %>% group_by(g) %>% do(x=f()) %>% unnest() | |
| # A tibble: 9 × 3 | |
| g a b | |
| <int> <int> <int> | |
| 1 1 1 3 | |
| 2 1 2 2 | |
| 3 1 3 1 | |
| 4 2 1 3 | |
| 5 2 2 2 | |
| 6 2 3 1 | |
| 7 3 1 3 | |
| 8 3 2 2 | |
| 9 3 3 1 | |
| # Machine B: Error, *assuming* from dplyr 0.7 | |
| > devtools::session_info() | |
| Session info ------------------------------------------------------------------- | |
| setting value | |
| version R version 3.3.2 (2016-10-31) | |
| system x86_64, darwin13.4.0 | |
| ui X11 | |
| language (EN) | |
| collate en_US.UTF-8 | |
| tz America/New_York | |
| date 2017-06-22 | |
| Packages ----------------------------------------------------------------------- | |
| package * version date source | |
| assertthat 0.2.0 2017-04-11 CRAN (R 3.3.2) | |
| devtools 1.12.0 2016-06-24 CRAN (R 3.3.0) | |
| digest 0.6.12 2017-01-27 CRAN (R 3.3.2) | |
| dplyr * 0.7.0 2017-06-09 cran (@0.7.0) | |
| glue 1.1.0 2017-06-13 cran (@1.1.0) | |
| lazyeval 0.2.0 2016-06-12 CRAN (R 3.3.0) | |
| magrittr 1.5 2014-11-22 CRAN (R 3.3.0) | |
| memoise 1.0.0 2016-01-29 CRAN (R 3.3.0) | |
| R6 2.2.1 2017-05-10 cran (@2.2.1) | |
| Rcpp 0.12.11 2017-05-22 cran (@0.12.11) | |
| rlang 0.1.1 2017-05-18 cran (@0.1.1) | |
| rstudioapi 0.6 2016-06-27 CRAN (R 3.3.0) | |
| tibble 1.3.3 2017-05-28 cran (@1.3.3) | |
| tidyr * 0.6.3 2017-05-15 CRAN (R 3.3.2) | |
| withr 1.0.2 2016-06-20 CRAN (R 3.3.0) | |
| > f = function()data.frame(a=1:3,b=3:1) | |
| > data.frame(g=1:3) %>% group_by(g) %>% do(x=f()) %>% unnest() | |
| Error in mutate_impl(.data, dots) : | |
| Column `x` must be length 1 (the group size), not 2 |
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