Adds support for spread #72
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ptal @hadley |
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Hmmmm, I'm not sure I want to start on the tidyr verbs. Is there somewhere more experimental that this could live in the interim? |
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Should we create an interim |
jarodmeng
reviewed
Jun 7, 2018
R/spread.R
Outdated
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| # Adds a mutate per each unique value | ||
| for(vals in 1:length(keys)){ | ||
| data <- mutate(data, !! expr_text(nf[[vals]]) := !! conds[[vals]]) |
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Conceptually I think the operation should be a summarise() instead of mutate(). You can see your result differs from tidyr::spread() if you use the following test data.
df <- tibble(
h = c("a", "b", "c", "d", "a", "b", "c", "d"),
x = c("A", "A", "B", "B", "B", "B", "A", "A"),
y = c("X", "Y", "X", "Y", "X", "Y", "X", "Y"),
z = c( 1, 2, 3, 4, 5, 6, 7, 8 )
)
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Yeah, I think that's a good idea. Maybe just back it your personal repo for now? |
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Sounds good |
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Adds the following:
Initial implementation of
tidyr::spread(), fortbl_sqlobjectsA test to confirm that it conforms with the original
spread()functionNEWS item