expo-location-export v1.0.0

expo-location-export

In the spirit of, "it should just work," 

    this package lets you convert raw expo-location returns
    to the most popular geospatial formats: geojson, gpx, and kml

        in a very opinionated manner.

Output defaults to pretty strings so you're ready to save as a file or share.

Read more about expo-location.

{
  "coords": {
  "accuracy": 11.553999900817871,
  "altitude": 36.900001525878906,
  "altitudeAccuracy": 2.5298962593078613,
  "heading": 0,
  "latitude": 48.8317425,
  "longitude": -121.4438241,
  "speed": 0
},
"mocked": false,
"timestamp": 1674709638052
}

Example Uses

• point feature

const point = new Exporter({gps: expoObject})
point.toGeoJSON()

• multi-point feature

const mp = new Exporter({gps: [expoObj1, expoObj2]})
mp.toGeoJSON()
// please, sir, can i have another?
mp.add({gps: newObj})
mp.toGeoJSON()
// but this time with props
mp.add({gps: newObj, props: {id: 1, name: "fooBar"}})
mp.toGeoJSON()

• feature collection of points

const props = [{id: 1, name: "foo"}, 
               {id: 2, name: "bar"}]
const points = new Exporter({gps: [expoObj1, expoOb2], 
                             props: props})
points.toGeoJSON()

• feature collection need an id?

const points = new Exporter({gps: [expoObj1, expoOb2], 
                             props,
                             options: {id: 57}})

• linestring feature

const ls = new Exporter({gps: [expoObj1, expoObj2]})
ls.toGeoJSON({type: "linestring"})

• polygon feature

const poly = new Exporter({gps: [expoObj1, expoObj2, expoObj3, expoObg4]})
poly.toGeoJSON("polygon")

• want the object instead of a string?

const point = new Exporter({gps: expoObj})
point.toGeoJSON("point", true)

• waypoint

const waypoint = new Exporter({gps: expoObj, 
                                  props: {
                                     name: "foo", 
                                     desc: "good scheisse"
                                  }
                              })
waypoint.toGPX()
// Set of points? But only the first has any props.
waypoint.add({gps: newObj})
waypoint.toGPX()

• track

const track = new Exporter({gps: [expoObj, expoObj]}) 
track.toGPX("track")

• change the info in the gpx header

const pt = new Exporter({gps: expoObj, 
                            options: {
                               app: {
                                  name: "my app", 
                                  url: "https://myappsite.com"
                               }
                            }
                        })

• un-end()'d xmlbuilder2 object instead of a string

const pt = new Exporter({gps: expoObj})
pt.toGPX("waypoint", true)

• point

const point = new Exporter({gps: expoObj, 
                                props: {
                                    name: "foo", 
                                    desc: "good scheisse"
                                }
                            })
point.toKML()
// mass, por favor
point.add({gps: newObj, props: newProps})
point.toKML()

• lineString

const linestring = new Exporter({gps: expoObjArr, 
                                    props: {
                                        name: "fooBar"
                                    }
                                })
linestring.toKML("linestring")

• export as raw xmlbuilder2 object rather than string

linestring.toKML("point", true)

const fooBar = new Exporter({gps, props, options})
const jsonDump = JSON.stringify(fooBar.dump())
localStorage.setItem('fooBar', jsonDump)
...
const newFoo = new Exporter()
newFoo.load(JSON.parse(localStorage.getItem('fooBar')))

Built with

• Turf
• xmlbuilder2