Skimr defaults

Introduction

This vignette simply displays the default data types and summary functions for skimr. Customizing skimr is explained in the Using Skimr vignette.

The base skimmers

skimr has a group of functions that it applies to all data types. We call these the “base”” skimmers:

• n_missing: The number of missing values in the column.
• complete_rate: The ratio of non-missing values to the total values in the column.

Default skimmers

To learn more about the functions used in this package, use the function get_default_skimmer_names().

library(skimr)
get_default_skimmer_names()

## $AsIs
## [1] "n_unique"   "min_length" "max_length"
## 
## $Date
## [1] "min"      "max"      "median"   "n_unique"
## 
## $POSIXct
## [1] "min"      "max"      "median"   "n_unique"
## 
## $Timespan
## [1] "min"      "max"      "median"   "n_unique"
## 
## $character
## [1] "min"        "max"        "empty"      "n_unique"   "whitespace"
## 
## $complex
## [1] "mean"
## 
## $difftime
## [1] "min"      "max"      "median"   "n_unique"
## 
## $factor
## [1] "ordered"    "n_unique"   "top_counts"
## 
## $haven_labelled
## [1] "mean" "sd"   "p0"   "p25"  "p50"  "p75"  "p100" "hist"
## 
## $list
## [1] "n_unique"   "min_length" "max_length"
## 
## $logical
## [1] "mean"  "count"
## 
## $numeric
## [1] "mean" "sd"   "p0"   "p25"  "p50"  "p75"  "p100" "hist"
## 
## $ts
##  [1] "start"      "end"        "frequency"  "deltat"     "mean"      
##  [6] "sd"         "min"        "max"        "median"     "line_graph"

The counterpart to this function is get_default_skimmers(), which returns the functions themselves. If you are interested in a particular class within skimr, pass it as a string to either function.

get_default_skimmer_names("numeric")

## $numeric
## [1] "mean" "sd"   "p0"   "p25"  "p50"  "p75"  "p100" "hist"

The same information is stored in the skimmers_used attribute of the object returned by skim().