Coordinate conversion and transformation package in pure Go(lang).
go get github.com/wroge/go-coo
import (
"github.com/wroge/go-coo"
)- Coordinate conversion between projected coordinate systems and geographical coordinates.
texasLambert := coo.ConformalConic(27.5, 35, 18, -100, 1500000, 5000000)
lon, lat := texasLambert.ToGeographic(1492401.186, 6484663.429, coo.GRS80)
east, north := texasLambert.FromGeographic(-100.080, 31.316, coo.GRS80)- Coordinate conversion between different projected coordinate systems.
east, north := coo.Convert(1001875.417, 6800125.454, coo.WebMercator,
coo.UTM(32, "N"), coo.WGS84)
east, north = coo.Convert(500000.000, 5761038.212, coo.UTM(32, "N"),
coo.WebMercator, coo.WGS84)- Coordinate transformation between different coordinate systems.
etrs89utm32N := &coo.Projected{
Geographic: &coo.Geographic{
Ellipsoid: coo.GRS80,
},
System: coo.UTM(32, "N"),
}
dhdn2001gk3 := &coo.Projected{
Geographic: &coo.Geographic{
Geocentric: de.DHDN2001,
Ellipsoid: coo.Bessel,
},
System: coo.GaussKrueger(3),
}
east, north, _ := coo.Transform(500000.000, 5761038.212, 0, etrs89utm32N, dhdn2001gk3)- Standard coordinate systems
// &coo.Geocentric{} -> WGS84, &coo.Geographic{} -> WGS84 Geographic, &coo.Projected{} -> Web Mercator WGS84
x, y, z := coo.Transform(1001875.417, 6800125.454, 0, &coo.Projected{}, &coo.Geocentric{})
lon, lat, h := coo.Transform(x, y, z, &coo.Geocentric{}, &coo.Geographic{})EPSG is a sub-package to which EPSG codes are added on a regular basis.
import (
"github.com/wroge/go-coo/epsg"
)