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amir-s/degress2meters.js

Forked from springmeyer/degress2meters.js
Created February 7, 2021 00:26
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convert from long/lat to google mercator (or EPSG:4326 to EPSG:900913)
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degress2meters.js
// See https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames for more details.
var degrees2meters = function(lon,lat) {
var x = lon * 20037508.34 / 180;
var y = Math.log(Math.tan((90 + lat) * Math.PI / 360)) / (Math.PI / 180);
y = y * 20037508.34 / 180;
return [x, y]
}
x= -77.035974
y = 38.898717
console.log(degrees2meters(x,y))
// should result in: -8575605.398444, 4707174.018280
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amir-s commented Feb 7, 2021

https://epsg.io/transform#s_srs=3857&t_srs=4326

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