Error when using the array.filter() method with polygons

I am working with an array named coordinate that contains latitude and longitude values for a polygon. I am trying to find the maximum and minimum latitude/longitude stored in this array.

My approach involves using the array.filter() method to filter the values, but I keep encountering the following error in my console:

coordinate.filter is not a function

// To extract latitude and longitude values of a map and store them in an array named coordinate

var coordinate = [];

for (var i = 0; i < polygon.getPath().getLength(); i++) {
    coordinate  += polygon.getPath().getAt(i).toUrlValue(6) + ",";
}

var results = coordinate.filter(function(value) {
    return (value < 0);
});

alert(coordinate);
})

Answer №1

To guarantee that your coordinate is in array format, please examine your comments to identify that you are seeking to determine the minimum and maximum values within the coordinate array. This can be achieved through the snippet below:

if(Array.isArray(coordinate)){
 let min = coordinate.reduce((a,b) => Math.min(a,b));
 let max = coordinate.reduce((a,b) => Math.max(a,b)); 
}

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