Highest value of an array inside an array

Question

I have an array with these values (returned from google.maps.LatLng):

var polygon = [
 { k=50.882917044569744, B=6.003985404968262}, 
 { k=50.88289589175401, B=6.003938466310501}, 
 { k=50.882934389871465, B=6.003895550966263}, 
 { k=50.88295554266969, B=6.003943160176277}
]

And I want the key of the one with the highest B value so in this case it would be polygon[0] I don't know how exactly the array is made actually but console.log() returns me this exactly:

[df { k=50.882917044569744, B=6.003985404968262, toString=function(), meer...}, df { k=50.88289589175401, B=6.003938466310501, toString=function(), meer...}, df { k=50.882934389871465, B=6.003895550966263, toString=function(), meer...}, df { k=50.88295554266969, B=6.003943160176277, toString=function(), meer...}]

And polygon[0] would return me the first object.

That's a syntax error; keys and values in a JavaScript object should be associated/assigned with {keyName : keyValue}. — David Thomas
– David Thomas, Commented Nov 25, 2014 at 13:23

Sinan Samet · Accepted Answer · 2014-11-25 13:58:06Z

1

You can always iterate the array with:

var polygon = [
    {k: 50.882917044569744, B: 6.003985404968262},
    {k: 50.88289589175401,  B: 6.003938466310501}, 
    {k: 50.882934389871465, B: 6.003895550966263},
    {k: 50.88295554266969,  B: 6.003943160176277}
];
var i, p;
for (i = 0; i < polygon.length; i++) {
    if (p === undefined || p.k < polygon[i].k) {
        p = polygon[i];
    }
}
console.log(p);

edited Nov 25, 2014 at 13:58

Sinan Samet

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answered Nov 25, 2014 at 13:26

Salman Arshad

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2 Comments

Sinan Samet Over a year ago

Thank you this is exactly what I was looking for! My goal was to get the top position of a polygon in google maps. All I needed to change was get the highest value of k instead of B but I managed to change that thanks a lot!

Salman Arshad Over a year ago

A better way would be to use a LatLngBounds() object, extend it by adding all paths of the polygon, and call the .getBounds() method.

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