Series.str.substr

Obtain the substring from a String element in a Series, by specifying the number of string to obtain starting from a specific index.

danfo.Series.str.substr(startIndex, num, options) [source]

Parameters	Type	Description	Default
startIndex	Number	specify the index to start obtaining the substring	0
num	Number	The number of character to obtain starting from the startIndex	1
options	Object	inplace: Whether to perform the operation in-place or not.	{ inplace: false }

Returns:

**** return Series

Example

Obtain substring( containing 4 characters) starting from the third character (2nd index).

const dfd = require("danfojs-node")

let data = ['lower part ', ' CAPITALS city', ' this is a sentence', '  SwAp CaSe']
let sf = new dfd.Series(data)
sf.str.substr(2, 4).print()

Output

╔═══╤══════════════════════╗
║   │ 0                    ║
╟───┼──────────────────────╢
║ 0 │ wer                  ║
╟───┼──────────────────────╢
║ 1 │ APIT                 ║
╟───┼──────────────────────╢
║ 2 │ his                  ║
╟───┼──────────────────────╢
║ 3 │ SwAp                 ║
╚═══╧══════════════════════╝