step_scale() not respecting prior dropped cols when run after a prep() step #143
Description
The following code removes a variable before a prep step. The step_scale() function ignores the fact that the column was previously dropped and output of the prep will show center step works on 3 cols, and scale on 4 cols (or in dev version says Sepal.Width is being scaled). Comment out the first prep() and the scale will show it's working on 3 columns. Very weird issue!
This is done in a single pipeline but represents the building of building different recipes in stages.
library(recipes)
iris %>%
recipe() %>%
step_rm(Sepal.Width) %>%
# comment out the next line to see the correct behaviour
prep() %>%
step_center(all_numeric()) %>%
step_scale(all_numeric()) %>%
prep()
Session Info:
Tried on latest CRAN version with everything fully up to date and then latest github of recipes
─ Session info ─────────────────────────────────────────────────────────
setting value
version R version 3.4.4 (2018-03-15)
os Windows >= 8 x64
system x86_64, mingw32
ui RStudio
language (EN)
collate English_United Kingdom.1252
tz Europe/London
date 2018-04-09
─ Packages ─────────────────────────────────────────────────────────────
package * version date source
abind 1.4-5 2016-07-21 CRAN (R 3.4.1)
assertthat 0.2.0 2017-04-11 CRAN (R 3.4.1)
bindr 0.1.1 2018-03-13 CRAN (R 3.4.4)
bindrcpp 0.2.2 2018-03-29 CRAN (R 3.4.4)
broom * 0.4.4 2018-03-29 CRAN (R 3.4.4)
class 7.3-14 2015-08-30 CRAN (R 3.4.4)
clisymbols 1.2.0 2017-05-21 CRAN (R 3.4.0)
CVST 0.2-1 2013-12-10 CRAN (R 3.4.1)
ddalpha 1.3.2 2018-04-08 CRAN (R 3.4.4)
DEoptimR 1.0-8 2016-11-19 CRAN (R 3.4.0)
dimRed 0.1.0.9001 2018-04-09 Github (gdkrmr/dimRed@cae270c)
dplyr * 0.7.4 2017-09-28 CRAN (R 3.4.3)
DRR 0.0.3 2018-01-06 CRAN (R 3.4.3)
foreign 0.8-69 2017-06-21 CRAN (R 3.4.0)
geometry 0.3-6 2015-09-09 CRAN (R 3.4.4)
glue 1.2.0 2017-10-29 CRAN (R 3.4.2)
gower 0.1.2 2017-02-23 CRAN (R 3.4.1)
ipred 0.9-6 2017-03-01 CRAN (R 3.4.1)
kernlab 0.9-25 2016-10-03 CRAN (R 3.4.0)
lattice 0.20-35 2017-03-25 CRAN (R 3.4.4)
lava 1.6.1 2018-03-28 CRAN (R 3.4.4)
lubridate 1.7.3 2018-02-27 CRAN (R 3.4.4)
magic 1.5-8 2018-01-26 CRAN (R 3.4.3)
magrittr 1.5 2014-11-22 CRAN (R 3.4.1)
MASS 7.3-49 2018-02-23 CRAN (R 3.4.4)
Matrix 1.2-13 2018-04-02 CRAN (R 3.4.4)
mnormt 1.5-5 2016-10-15 CRAN (R 3.4.0)
nlme 3.1-131.1 2018-02-16 CRAN (R 3.4.4)
nnet 7.3-12 2016-02-02 CRAN (R 3.4.4)
pillar 1.2.1 2018-02-27 CRAN (R 3.4.4)
pkgconfig 2.0.1 2017-03-21 CRAN (R 3.4.1)
plyr 1.8.4 2016-06-08 CRAN (R 3.4.1)
prodlim 1.6.1 2017-03-06 CRAN (R 3.4.1)
psych 1.8.3.3 2018-03-30 CRAN (R 3.4.4)
purrr 0.2.4 2017-10-18 CRAN (R 3.4.2)
R6 2.2.2 2017-06-17 CRAN (R 3.4.1)
Rcpp 0.12.16 2018-03-13 CRAN (R 3.4.4)
RcppRoll 0.2.2 2015-04-05 CRAN (R 3.4.1)
recipes * 0.1.2.9000 2018-04-09 Github (topepo/recipes@a95175e)
reshape2 1.4.3 2017-12-11 CRAN (R 3.4.3)
rlang 0.2.0 2018-02-20 CRAN (R 3.4.3)
robustbase 0.92-8 2017-11-01 CRAN (R 3.4.2)
rpart 4.1-13 2018-02-23 CRAN (R 3.4.4)
sessioninfo 1.0.1.9000 2017-11-22 Github (r-lib/sessioninfo@c871d01)
sfsmisc 1.1-2 2018-03-05 CRAN (R 3.4.4)
stringi 1.1.7 2018-03-12 CRAN (R 3.4.4)
stringr 1.3.0 2018-02-19 CRAN (R 3.4.3)
survival 2.41-3 2017-04-04 CRAN (R 3.4.1)
tibble 1.4.2 2018-01-22 CRAN (R 3.4.3)
tidyr 0.8.0 2018-01-29 CRAN (R 3.4.3)
tidyselect 0.2.4 2018-02-26 CRAN (R 3.4.4)
timeDate 3043.102 2018-02-21 CRAN (R 3.4.3)
withr 2.1.2 2018-03-15 CRAN (R 3.4.4)
yaml 2.1.18 2018-03-08 CRAN (R 3.4.4)