Description Usage Arguments Value Examples
'count()' lets you quickly count the unique values of one or more variables: 'df 'df 'count()' is paired with 'tally()', a lower-level helper that is equivalent to 'df switching the summary from 'n=n()' to 'n=sum(wt)'.
'add_count()' are 'add_tally()' are equivalents to 'count()' and 'tally()' but use 'mutate()' instead of 'summarise()' so that they add a new column with group-wise counts.
1 2 3 4 5 6 7 8 |
x |
A data frame, data frame extension (e.g. a tibble), or a lazy data frame (e.g. from dbplyr or dtplyr). |
... |
<['data-masking'][dplyr_data_masking]> Variables to group by. |
wt |
<['data-masking'][dplyr_data_masking]> Frequency weights. Can be 'NULL' or a variable: * If 'NULL' (the default), counts the number of rows in each group. * If a variable, computes 'sum(wt)' for each group. |
sort |
If 'TRUE', will show the largest groups at the top. |
name |
The name of the new column in the output. If omitted, it will default to ‘n'. If there’s already a column called 'n', it will error, and require you to specify the name. |
.drop |
For 'count()': if 'FALSE' will include counts for empty groups (i.e. for levels of factors that don't exist in the data). Deprecated in ‘add_count()' since it didn’t actually affect the output. |
An object of the same type as '.data'. 'count()' and 'add_count()' group transiently, so the output has the same groups as the input.
1 2 3 4 |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.