I'm not sure I'm not missing something here but Assuming I have a GPX file and I want

I want to archieve the same but can't figure out how to convert a <code class="notrans

Thanks for the hint to the other library <a class="user-mention notranslate" data-hove

GPX to GeoJson about geo HOT 3 OPEN

sibartlett commented on July 23, 2024

GPX to GeoJson

from geo.

Comments (3)

toburger commented on July 23, 2024

I want to archieve the same but can't figure out how to convert a Gps.GpsData type to an IGeometry.

from geo.

HarelM commented on July 23, 2024

As this was never answered I did not choose to has this library.
I suggest to use the net topology suite team packages, they have support for reading and writing GPX files along with ton of other features...

from geo.

toburger commented on July 23, 2024

Thanks for the hint to the other library @HarelM!

In the meantime I managed to transform the data with the following code but I will definitely have a look at the other library (F# code following):

#r "nuget: Geo, 1.0.0"

open Geo
open Geo.IO.GeoJson
open Geo.Abstractions.Interfaces
open Geo.Gps.Serialization

let readGpx filepath =
    let s = Gpx11Serializer()
    let stream = System.IO.File.OpenRead filepath
    s.DeSerialize(new StreamWrapper(stream))

let convertToGeoJson geometry =
    let writer = GeoJsonWriter()
    writer.Write(geometry: IGeometry)

let extractWaypoints (data: Gps.GpsData) =
    data.Waypoints

let extractCoordinates: seq<Gps.Waypoint> -> _ =
    Seq.map (fun x -> x.Coordinate)

"file.gpx"
|> readGpx
|> extractWaypoints
|> extractCoordinates
|> Geometries.LineString
|> convertToGeoJson