Pipeline throws an error when trying to evaluate ":=" using dplyr #50
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There does seem to be an issue using Non-Standard Evaluation, though it seems to relate to the However, what you are trying to accomplish can be done like so: df <- df %>% mutate(this_is_a_test := 1) This works within a pipeline. The problem occurs when a dynamic column name is required which would need you to use the |
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Thanks for the response. The function I was using lets the user define their own variable name, hence the !! operator. I can make a work around but thanks for looking into it! |
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The package throws an error if the function it is referencing contains ":=" in one of its operations.
Simply example below where df is any data frame. Running the code below in a normal R console works, however when wrapped in a function and used in the pipeline it throws an error.
Example Cod:
df <- df %>%
mutate(!!sym("this_is_a_test") := 1)
Error:
ERROR [2019-02-27 15:46:58] || EXCEPTION OCCURED WHILE RUNNING THE PIPELINE FUNCTION WITH PROVIDED PARAMETERS: The LHS of
:=must be a string or a symbol ||ERROR [2019-02-27 15:46:58] Error in genericPipelineException(error = structure(list(message = "The LHS of
:=must be a string or a symbol", : || EXCEPTION OCCURED WHILE RUNNING THE PIPELINE FUNCTION WITH PROVIDED PARAMETERS: The LHS of:=must be a string or a symbol ||The text was updated successfully, but these errors were encountered: