DataFrame.nunique

danfo.DataFrame.nunique(axis) [source]
Parameters
Type
Description
Default
axis
Int
 0 for row axis, and 1 for column axis
1
Returns:
       return Series
Examples
Return number of unique values along column axis (axis=1)
Node
Browser
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const dfd = require("danfojs-node")
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​
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let data = { "A": [-20, 30, 47.3, -20] ,
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             "B": [34, -4, 5, 6] ,
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             "C": [20, 20, 30, 30],
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             "D": ["a", "b", "c", "c"] }
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​
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let df = new dfd.DataFrame(data)
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df.nunique().print()
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​
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1
​
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Output
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╔═══╤═══╗
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║ 0 │ 3 ║
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╟───┼───╢
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║ 1 │ 4 ║
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╟───┼───╢
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║ 2 │ 2 ║
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╟───┼───╢
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║ 3 │ 3 ║
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╚═══╧═══╝
10
​
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Return number of unique values in row axis (axis=0)
Node
Browser
1
const dfd = require("danfojs-node")
2
​
3
let data = { "A": [-20, 30, 47.3, -20] ,
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             "B": [34, -4, 5, 6] ,
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             "C": [20, 20, 30, 30],
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             "D": ["a", "b", "c", "c"] }
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​
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let df = new dfd.DataFrame(data)
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df.nunique(axis=0).print()
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​
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1
​
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Output
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╔═══╤══════════════════════╗
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║   │ 0                    ║
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╟───┼──────────────────────╢
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║ 0 │ 4                    ║
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╟───┼──────────────────────╢
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║ 1 │ 4                    ║
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╟───┼──────────────────────╢
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║ 2 │ 4                    ║
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╟───┼──────────────────────╢
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║ 3 │ 4                    ║
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╚═══╧══════════════════════╝
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Note: To get the unique elements along an axis, use DataFrame.unique.​

DataFrame.append

DataFrame.tensor

Last modified 17d ago

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Contents

Examples

Return number of unique values along column axis (axis=1)

Return number of unique values in row axis (axis=0)