docfreq(object, threshold = 0)## S3 method for class 'dfmDense,numeric':
docfreq(object, threshold = 0)
## S3 method for class 'dfmDense,missing':
docfreq(object, threshold = 0)
## S3 method for class 'dfmSparse,numeric':
docfreq(object, threshold = 0)
## S3 method for class 'dfmSparse,missing':
docfreq(object, threshold = 0)
## S3 method for class 'dfm,numeric':
docfreq(object, threshold = 0)
## S3 method for class 'dfm,missing':
docfreq(object, threshold = 0)