Series.append

danfo.Series.append(newValue, index, options) [source]
Parameters
Type
Description
Default
newValue
Array, Series
Object to append
​
index
Array
The new index value(s) to append to the Series. Must contain the same number of values as newValues as they map 1 - 1.
​
options
Object
{ 
inplace: Whether to perform operation in-place or not.
}
false
Returns:
       return Series
​
Append new Series to the end of a Series
Node
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const dfd = require("danfojs-node")
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​
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let sf1 = new dfd.Series([1, 2, 3, 4], { index: ['f1', 'f2', 'f3', 'f4'] })
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let sf2 = new dfd.Series(["a", "b", "c"])
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​
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new_sf = sf1.append(sf2, ["f5", "f6", "f7"])
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new_sf.print()
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Output
1
╔════╤═══╗
2
║ f1 │ 1 ║
3
╟────┼───╢
4
║ f2 │ 2 ║
5
╟────┼───╢
6
║ f3 │ 3 ║
7
╟────┼───╢
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║ f4 │ 4 ║
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╟────┼───╢
10
║ f5 │ a ║
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╟────┼───╢
12
║ f6 │ b ║
13
╟────┼───╢
14
║ f7 │ c ║
15
╚════╧═══╝
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Append new Series to the end of a Series in-place
Node
1
const dfd = require("danfojs-node")
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​
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let sf1 = new dfd.Series([1, 2, 3, 4], { index: ['f1', 'f2', 'f3', 'f4'] })
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let sf2 = new dfd.Series(["a", "b", "c"])
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let newIndex = ["f5", "f6", "f7"]
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​
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sf1.append(sf2, newIndex, { inplace: true })
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sf1.print()
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1
╔════╤═══╗
2
║ f1 │ 1 ║
3
╟────┼───╢
4
║ f2 │ 2 ║
5
╟────┼───╢
6
║ f3 │ 3 ║
7
╟────┼───╢
8
║ f4 │ 4 ║
9
╟────┼───╢
10
║ f5 │ a ║
11
╟────┼───╢
12
║ f6 │ b ║
13
╟────┼───╢
14
║ f7 │ c ║
15
╚════╧═══╝
Copied!
Append an array to the end of Series
Node
Browser
1
let sf1 = new dfd.Series([1, 2, 3, 4], { index: ['f1', 'f2', 'f3', 'f4'] })
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let sfArr = ["a", "b", "c"]
3
​
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new_sf = sf1.append(sfArr, ["f5", "f6", "f7"])
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new_sf.print()
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​
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1
​
Copied!
Output
1
╔════╤═══╗
2
║ f1 │ 1 ║
3
╟────┼───╢
4
║ f2 │ 2 ║
5
╟────┼───╢
6
║ f3 │ 3 ║
7
╟────┼───╢
8
║ f4 │ 4 ║
9
╟────┼───╢
10
║ f5 │ a ║
11
╟────┼───╢
12
║ f6 │ b ║
13
╟────┼───╢
14
║ f7 │ c ║
15
╚════╧═══╝
16
​
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Creating a Series

Series.cumsum

Last modified 24d ago

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Contents

Append new Series to the end of a Series

Append new Series to the end of a Series in-place

Append an array to the end of Series