R forcats fct_drop 删除未使用的级别与base::droplevels() 相比,不会删除具有值的 NA 级别。 用法 fct_drop(f, only = NULL) 参数 f 因子(或字符向量)。 only 限制要删除的级别集的字符向量。如果提供,则只有没有条目且出现在该向量中的级别才会被删除。 也可以看看 fct_expand() 为因子添加额外级别...
在函数中执行fct_drop(使用整洁的值)可以通过以下步骤实现: 1. 首先,确保已经导入fct_drop函数所在的库或模块。根据具体的编程语言,可以使用不同的方式导入函数。 2. 在函数中定义...
There's already the fct_explicit_na if you want to add missing values as a factor level, so would you consider removing the feature from fct_drop, or adding an argument for choosing either option? If you like to keep drop_levels like this, then it would be better to change the descrip...
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