Geoos

Our organization spatial-go is officially established! The first open source project Geoos(Using Golang) provides spatial data and geometric algorithms. All comments and suggestions are welcome!

Guides

http://www.spatial-go.com

Structure

1.algorithm Package algorithm defines Specifies Computational Geometric and algorithm err. 2.clusters Package clusters is a spatial clustering algorithm. 3.coordtransform Package coordtransform is for transform coord. 4.example Example This is an example . 5.geoencoding Package geoencoding is a library for encoding and decoding into Go structs using the geometries. 6.grid Package grid is used to generate grid data. 7.index Package index define spatial index interface. 8.planar Package planar provides support for the implementation of spatial operations and geometric algorithms. 9.space Package space A representation of a linear vector geometry. 10.utils Package utils A functions of utils.

Documentation

How to use Geoos: Example: Calculating area via Geoos

package main

import (
	"bytes"
	"fmt"

	"github.com/spatial-go/geoos/geoencoding"
	"github.com/spatial-go/geoos/planar"
)

func main() {
	// First, choose the default algorithm.
	strategy := planar.NormalStrategy()
	// Secondly, manufacturing test data and convert it to geometry
	const polygon = `POLYGON((-1 -1, 1 -1, 1 1, -1 1, -1 -1))`
	// geometry, _ := wkt.UnmarshalString(polygon)

	buf0 := new(bytes.Buffer)
	buf0.Write([]byte(polygon))
	geometry, _ := geoencoding.Read(buf0, geoencoding.WKT)

	// Last， call the Area () method and get result.
	area, e := strategy.Area(geometry)
	if e != nil {
		fmt.Printf(e.Error())
	}
	fmt.Printf("%f", area)
	// get result 4.0
}

Example: geoencoding example_encoding.go