DataFrame.nUnique
Returns the number of unique elements in a column, across the specified axis.
Parameters | Type | Description | Default |
---|---|---|---|
axis | Int | 0 for row axis, and 1 for column axis | 1 |
Node
Browser
const dfd = require("danfojs-node")
let data = { "A": [-20, 30, 47.3, -20] ,
"B": [34, -4, 5, 6] ,
"C": [20, 20, 30, 30],
"D": ["a", "b", "c", "c"] }
let df = new dfd.DataFrame(data)
df.nunique().print()
Output
╔═══╤═══╗
║ 0 │ 4 ║
╟───┼───╢
║ 1 │ 4 ║
╟───┼───╢
║ 2 │ 4 ║
╟───┼───╢
║ 3 │ 4 ║
╚═══╧═══╝
Node
Browser
const dfd = require("danfojs-node")
let data = { "A": [-20, 30, 47.3, -20] ,
"B": [34, -4, 5, 6] ,
"C": [20, 20, 30, 30],
"D": ["a", "b", "c", "c"] }
let df = new dfd.DataFrame(data)
df.nUnique(axis=0).print()
Output
╔═══╤═══╗
║ A │ 3 ║
╟───┼───╢
║ B │ 4 ║
╟───┼───╢
║ C │ 2 ║
╟───┼───╢
║ D │ 3 ║
╚═══╧═══╝
Last modified 1yr ago