geohash

package

v1.4.3 Latest Latest Go to latest Published: May 11, 2023 License: GPL-3.0 Imports: 10 Imported by: 0

Details

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Repository

github.com/xyzj/gopsu

Documentation ¶

Overview ¶

Package geohash ： go版的redis-geo模块，貌似有内存泄露问题，待查找和修正，目前不建议使用

Index ¶

func Decode(code uint64) (float64, float64)
func Distance(longitude1, latitude1, longitude2, latitude2 float64) float64
func Encode(longitude, latitude float64) uint64
func FromUInt64(code uint64) []byte
func GetNeighbours(longitude, latitude, radiusMeters float64) [][2]uint64
func ToString(buf []byte) string
func ToUInt64(buf []byte) uint64
type GeoCache
- func NewGeoCache(name string) *GeoCache
type GeoPoint
- func (gp *GeoPoint) String() string

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Decode ¶

func Decode(code uint64) (float64, float64)

Decode converts uint64 geohash code to latitude and longitude

func Distance ¶

func Distance(longitude1, latitude1, longitude2, latitude2 float64) float64

Distance computes the distance between two given coordinates in meter

func Encode ¶

func Encode(longitude, latitude float64) uint64

Encode converts latitude and longitude to uint64 geohash code

func FromUInt64 ¶

func FromUInt64(code uint64) []byte

FromUInt64 converts uint64 geohash code to bytes

func GetNeighbours ¶

func GetNeighbours(longitude, latitude, radiusMeters float64) [][2]uint64

GetNeighbours returns geohash code of blocks within radiusMeters to the given coordinate

func ToString ¶

func ToString(buf []byte) string

ToString converts bytes geohash code to base32 string

func ToUInt64 ¶

func ToUInt64(buf []byte) uint64

ToUInt64 converts bytes geohash code to uint64 code

Types ¶

type GeoCache ¶

type GeoCache struct {
	// contains filtered or unexported fields
}

GeoCache geo数据缓存集

func NewGeoCache ¶

func NewGeoCache(name string) *GeoCache

NewGeoCache 初始化一个新的geocache

func (*GeoCache) GeoAdd ¶

func (g *GeoCache) GeoAdd(points ...*GeoPoint) int

GeoAdd 添加geo点,返回成功添加的数量

func (*GeoCache) GeoDist ¶

func (g *GeoCache) GeoDist(name1, name2 string) (float64, error)

GeoDist 计算距离，单位米

func (*GeoCache) GeoDistPoint ¶

func (g *GeoCache) GeoDistPoint(lng1, lat1, lng2, lat2 float64) (float64, error)

GeoDistPoint 计算距离，单位米

func (*GeoCache) GeoPos ¶

func (g *GeoCache) GeoPos(names ...string) []*GeoPoint

GeoPos 返回指定名称的信息

func (*GeoCache) GeoRadius ¶

func (g *GeoCache) GeoRadius(longitude, latitude, radius float64) []*GeoPoint

GeoRadius 获取半径内的点

func (*GeoCache) GeoRadiusByMember ¶

func (g *GeoCache) GeoRadiusByMember(name string, radius float64) []*GeoPoint

GeoRadiusByMember 获取指定成员半径内的点

func (*GeoCache) GeoRem ¶

func (g *GeoCache) GeoRem(names ...string) int

GeoRem 删除指定点

func (*GeoCache) Len ¶

func (g *GeoCache) Len() int64

Len 长度

func (*GeoCache) LoadFromFile ¶

func (g *GeoCache) LoadFromFile() error

LoadFromFile 从文件读取缓存

func (*GeoCache) Reset ¶

func (g *GeoCache) Reset()

Reset 重置geo缓存

func (*GeoCache) SaveToFile ¶

func (g *GeoCache) SaveToFile() error

SaveToFile 保存到文件

type GeoPoint ¶

type GeoPoint struct {
	Name string  `json:"aid,omitempty"`
	Lng  float64 `json:"lng,omitempty"`
	Lat  float64 `json:"lat,omitempty"`
	// contains filtered or unexported fields
}

GeoPoint geo点

func (*GeoPoint) String ¶

func (gp *GeoPoint) String() string

Source Files ¶

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Directories ¶

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