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coforfe avatar coforfe commented on August 20, 2024 1

Thanks Mark!.

I was not aware of pick().

Thanks again,
Carlos

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markfairbanks avatar markfairbanks commented on August 20, 2024

You're trying to use the colon : in a column selection context (like select(col1:col4)). To get column selection inside of a mutate() you need to use pick() or across().

Also note that using rowSums() will be much faster in this case than a mutate_rowwise() call.

pacman::p_load(tidytable)

iris %>%
  mutate_rowwise(sumall = sum(c(Sepal.Length, Sepal.Width, Petal.Length, Petal.Width)),
                 sumall2 = sum(pick(Sepal.Length:Petal.Width))) %>%
  mutate(sumall3 = rowSums(pick(Sepal.Length:Petal.Width))) %>%
  select(starts_with("sum"))
#> # A tidytable: 150 × 3
#>    sumall sumall2 sumall3
#>     <dbl>   <dbl>   <dbl>
#>  1   10.2    10.2    10.2
#>  2    9.5     9.5     9.5
#>  3    9.4     9.4     9.4
#>  4    9.4     9.4     9.4
#>  5   10.2    10.2    10.2
#>  6   11.4    11.4    11.4
#>  7    9.7     9.7     9.7
#>  8   10.1    10.1    10.1
#>  9    8.9     8.9     8.9
#> 10    9.6     9.6     9.6
#> # ℹ 140 more rows

Hope this helps - if you have any questions let me know.

from tidytable.

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