describe
Returns DataFrame with general statistics for all ValueColumns.
describe [ columns ]
ColumnGroup and FrameColumns are traversed recursively down to ValueColumns.
Collected statistics:
name— column namepath— path to the column (for hierarchicalDataFrame)type— type of valuescount— number of rowsunique— number of unique valuesnulls— number ofnullvaluestop— the most common notnullvaluefreq—topvalue frequencymean— mean value (for numeric columns)std— standard deviation (for numeric columns)min— minimal value (for comparable columns)median— median value (for comparable columns)max— maximum value (for comparable columns)
df.describe()
To describe only specific columns, pass them as an argument:
df.describe { age and name.allCols() }
val age by column<Int>()
val name by columnGroup()
df.describe { age and name.allCols() }
df.describe { "age" and "name".allCols() }
Last modified: 29 March 2024