DataFrame.column

Return the elements of the specified column in the DataFrame

danfo.DataFrame.column(col_name) [source]
Parameters
Type
Description
Default
col_name
Str
The name of a column in the DataFrame
​
Returns:
       return Series
Examples
Select a single column from a DataFrame
Node
Browser
Node
const dfd = require("danfojs-node")
let data = [{ "Name": ["Apples", "Mango", "Banana", undefined] },
           { "Count": [NaN, 5, NaN, 10] },
           { "Price": [200, 300, 40, 250] }]
​
let df = new dfd.DataFrame(data)
​
df.column("Name").print()
​
//Alternatively, you can retrieve columns by using the object property
df['Name'].print() //produces the same result as above
​
Browser
​
Output
Output
╔═══╤══════════════════════╗
║   │ Name                 ║
╟───┼──────────────────────╢
║ 0 │ Apples               ║
╟───┼──────────────────────╢
║ 1 │ Mango                ║
╟───┼──────────────────────╢
║ 2 │ Banana               ║
╟───┼──────────────────────╢
║ 3 │ NaN                  ║
╚═══╧══════════════════════╝
​
╔═══╤══════════════════════╗
║   │ Name                 ║
╟───┼──────────────────────╢
║ 0 │ Apples               ║
╟───┼──────────────────────╢
║ 1 │ Mango                ║
╟───┼──────────────────────╢
║ 2 │ Banana               ║
╟───┼──────────────────────╢
║ 3 │ NaN                  ║
╚═══╧══════════════════════╝
To select more than one column with specific rows, you can use any of the following: DataFrame.loc, DataFrame.iloc or DataFrame.query​

DataFrame.groupby

DataFrame.fillna

Last updated 8 months ago

Parameters	Type	Description	Default
col_name	Str	The name of a column in the DataFrame