With the help of d3.group.get() method, we can get the values from the resulting map obtained by grouping an iterable data structure.
Syntax:
d3.group.get( value )
Return value: It returns the values from the map.
Note: To execute the below examples you have to install the d3 library by using this command prompt we have to execute the following command.
npm install d3
Example 1: In this example, we can see that by using d3.group.get() method, we are able to get the values from the resulting map obtained from the group.
Javascript
// Defining d3 contrib variable var d3 = require('d3');
data = [ {name: "ABC", amount: "34.0", date: "11/12/2015"},
{name: "DEF", amount: "120.11", date: "11/12/2015"},
{name: "MNO", amount: "12.01", date: "01/04/2016"},
{name: "XYZ", amount: "34.05", date: "01/04/2016"}
] var grouped_data = d3.group(data, d => d.name)
console.log(grouped_data.get("ABC"))
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Output:
[ { name: 'ABC', amount: '34.0', date: '11/12/2015' } ]
Example 2:
Javascript
// Defining d3 contrib variable var d3 = require('d3');
data = [ {name: "ABC", amount: "34.0", date: "11/12/2019"},
{name: "DEF", amount: "120.11", date: "11/02/2020"},
{name: "MNO", amount: "12.01", date: "01/04/2020"},
{name: "XYZ", amount: "34.05", date: "03/04/2020"}
] var grouped_data = d3.group(data, d => d.name, d => d.date)
console.log(grouped_data.get("XYZ"))
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Output:
Map {
'03/04/2020' => [
{ name: 'XYZ', amount: '34.05', date: '03/04/2020' } ]
}