Generate circle points from latitude and longitude from center point and radius

Question

I have (lat, lon) for the center of a circle.
I have a radius R in km.
My code

for (var i = 0; i < steps; i++) {
    let degrees = (i/steps)*360
    let radians = (Math.PI/180)*degrees
    let x = lat + radius * Math.cos(radians)
    let y = lon + radius * Math.sin(radians)
    coordinates.push([x,y])
}

returns an oval shape because of the latitude and variable radius is not in km, but in coordinates.

How can I adapt this code in order to generate a perfect circle?

I found [this related answer](https://stackoverflow.com/a/10715947/4539276), which satisfies my needs! — Giovani de Quadros, Nov 11 '19 at 19:38

score 0 · Answer 1 · answered Nov 11 '19 at 19:41

0

For not very large circle radius you can correct longitude dimension using division by cos(latitude), because meridian/parallel ratio depends on this value.

answered Nov 11 '19 at 19:41

MBo

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Generate circle points from latitude and longitude from center point and radius

1 Answers1