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step_dummy with no variable selected #348

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topepo opened this issue Jun 27, 2019 · 1 comment

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@topepo
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commented Jun 27, 2019

@kjell-stattenacity In cases where step_dummy() receives no variables, it should not just fail.

library(tidymodels)

zdat <- tibble(
  y = c(1, 2, 3), 
  x = c("a", "a", "a"),
  z = 3:1
  )

transform_recipe2 <- recipe(y ~ x, data = zdat) %>%
  step_zv(all_predictors()) %>% 
  step_dummy(all_predictors()) %>%
  prep(training = zdat)
topepo added a commit that referenced this issue Jun 28, 2019
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commented Jun 28, 2019

Changes have been checked in if you want to test

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