geojson

GeoJSON Parser for locations.geojson

Parses GeoJSON files according to RFC 7946. Used for GTFS-Flex locations.geojson file. Source: GTFS reference.md - Dataset Files > locations.geojson

Types

Feature

</>

A GeoJSON Feature

pub type Feature {
  Feature(
    id: option.Option(String),
    properties: dict.Dict(String, String),
    geometry: Geometry,
  )
}

Constructors

Feature(
  id: option.Option(String),
  properties: dict.Dict(String, String),
  geometry: Geometry,
)

FeatureCollection

</>

A GeoJSON FeatureCollection

pub type FeatureCollection {
  FeatureCollection(features: List(Feature))
}

Constructors

FeatureCollection(features: List(Feature))

GeoJsonError

</>

Errors that can occur during GeoJSON parsing

pub type GeoJsonError {
  InvalidJson(reason: String)
  MissingField(field: String)
  InvalidGeometryType(got: String, expected: String)
  InvalidCoordinates(reason: String)
  InvalidPolygon(reason: String)
  InvalidFeature(reason: String)
}

Constructors

```
InvalidJson(reason: String)
```
Invalid JSON syntax
```
MissingField(field: String)
```
Missing required field

InvalidGeometryType(got: String, expected: String)

Invalid geometry type

```
InvalidCoordinates(reason: String)
```
Invalid coordinates
```
InvalidPolygon(reason: String)
```
Invalid polygon (not closed, wrong winding, etc.)
```
InvalidFeature(reason: String)
```
Invalid feature

Geometry

</>

GeoJSON Geometry types supported for GTFS

pub type Geometry {
  Polygon(rings: List(List(types.Coordinate)))
  MultiPolygon(polygons: List(List(List(types.Coordinate))))
}

Constructors

Polygon(rings: List(List(types.Coordinate)))

MultiPolygon(polygons: List(List(List(types.Coordinate))))

Values

parse

</>

pub fn parse(
  content: String,
) -> Result(FeatureCollection, GeoJsonError)

Parse a GeoJSON string into a FeatureCollection