Class: GeoJSON

Extends

• ol.format.JSONFeature

Methods

readFeature(source, opt_options){ol.Feature}

src/ol/format/geojsonformat.js, line 384

Read a feature from a GeoJSON Feature source. Only works for Feature, use readFeatures to read FeatureCollection source.

Name	Type	Description
source	Document | Node | Object | string	Source.
options	Read options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are reading. If not provided, the projection will be derived from the data (where possible) or the defaultDataProjection of the format is assigned (where set). If the projection can not be derived from the data and if no defaultDataProjection is set for a format, the features will not be reprojected. featureProjection ol.proj.ProjectionLike Projection of the feature geometries created by the format reader. If not provided, features will be returned in the dataProjection.

Returns:

Feature.

readFeatures(source, opt_options){Array.<ol.Feature>}

src/ol/format/geojsonformat.js, line 397

Read all features from a GeoJSON source. Works with both Feature and FeatureCollection sources.

Name	Type	Description
source	Document | Node | Object | string	Source.
options	Read options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are reading. If not provided, the projection will be derived from the data (where possible) or the defaultDataProjection of the format is assigned (where set). If the projection can not be derived from the data and if no defaultDataProjection is set for a format, the features will not be reprojected. featureProjection ol.proj.ProjectionLike Projection of the feature geometries created by the format reader. If not provided, features will be returned in the dataProjection.

Returns:

Features.

readGeometry(source, opt_options){ol.geom.Geometry}

src/ol/format/geojsonformat.js, line 461

Read a geometry from a GeoJSON source.

Name	Type	Description
source	Document | Node | Object | string	Source.
options	Read options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are reading. If not provided, the projection will be derived from the data (where possible) or the defaultDataProjection of the format is assigned (where set). If the projection can not be derived from the data and if no defaultDataProjection is set for a format, the features will not be reprojected. featureProjection ol.proj.ProjectionLike Projection of the feature geometries created by the format reader. If not provided, features will be returned in the dataProjection.

Returns:

Geometry.

readProjection(source){ol.proj.Projection}

src/ol/format/geojsonformat.js, line 482

Read the projection from a GeoJSON source.

Name	Type	Description
source	Document | Node | Object | string	Source.

Returns:

Projection.

writeFeature(feature, opt_options){string}

src/ol/format/geojsonformat.js, line 519

Encode a feature as a GeoJSON Feature string.

Name	Type	Description
feature	ol.Feature	Feature.
options	Write options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are writing. If not provided, the defaultDataProjection of the format is assigned (where set). If no defaultDataProjection is set for a format, the features will be returned in the featureProjection. featureProjection ol.proj.ProjectionLike Projection of the feature geometries that will be serialized by the format writer. rightHanded boolean | undefined When writing geometries, follow the right-hand rule for linear ring orientation. This means that polygons will have counter-clockwise exterior rings and clockwise interior rings. By default, coordinates are serialized as they are provided at construction. If true, the right-hand rule will be applied. If false, the left-hand rule will be applied (clockwise for exterior and counter-clockwise for interior rings). Note that not all formats support this. The GeoJSON format does use this property when writing geometries.

Returns:

GeoJSON.

writeFeatureObject(feature, opt_options){Object}

src/ol/format/geojsonformat.js, line 530

Encode a feature as a GeoJSON Feature object.

Name	Type	Description
feature	ol.Feature	Feature.
options	Write options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are writing. If not provided, the defaultDataProjection of the format is assigned (where set). If no defaultDataProjection is set for a format, the features will be returned in the featureProjection. featureProjection ol.proj.ProjectionLike Projection of the feature geometries that will be serialized by the format writer. rightHanded boolean | undefined When writing geometries, follow the right-hand rule for linear ring orientation. This means that polygons will have counter-clockwise exterior rings and clockwise interior rings. By default, coordinates are serialized as they are provided at construction. If true, the right-hand rule will be applied. If false, the left-hand rule will be applied (clockwise for exterior and counter-clockwise for interior rings). Note that not all formats support this. The GeoJSON format does use this property when writing geometries.

Returns:

Object.

writeFeatures(features, opt_options){string}

src/ol/format/geojsonformat.js, line 565

Encode an array of features as GeoJSON.

Name	Type	Description
features	Array.<ol.Feature>	Features.
options	Write options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are writing. If not provided, the defaultDataProjection of the format is assigned (where set). If no defaultDataProjection is set for a format, the features will be returned in the featureProjection. featureProjection ol.proj.ProjectionLike Projection of the feature geometries that will be serialized by the format writer. rightHanded boolean | undefined When writing geometries, follow the right-hand rule for linear ring orientation. This means that polygons will have counter-clockwise exterior rings and clockwise interior rings. By default, coordinates are serialized as they are provided at construction. If true, the right-hand rule will be applied. If false, the left-hand rule will be applied (clockwise for exterior and counter-clockwise for interior rings). Note that not all formats support this. The GeoJSON format does use this property when writing geometries.

Returns:

GeoJSON.

writeFeaturesObject(features, opt_options){Object}

src/ol/format/geojsonformat.js, line 576

Encode an array of features as a GeoJSON object.

Name	Type	Description
features	Array.<ol.Feature>	Features.
options	Write options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are writing. If not provided, the defaultDataProjection of the format is assigned (where set). If no defaultDataProjection is set for a format, the features will be returned in the featureProjection. featureProjection ol.proj.ProjectionLike Projection of the feature geometries that will be serialized by the format writer. rightHanded boolean | undefined When writing geometries, follow the right-hand rule for linear ring orientation. This means that polygons will have counter-clockwise exterior rings and clockwise interior rings. By default, coordinates are serialized as they are provided at construction. If true, the right-hand rule will be applied. If false, the left-hand rule will be applied (clockwise for exterior and counter-clockwise for interior rings). Note that not all formats support this. The GeoJSON format does use this property when writing geometries.

Returns:

GeoJSON Object.

writeGeometry(geometry, opt_options){string}

src/ol/format/geojsonformat.js, line 600

Encode a geometry as a GeoJSON string.

Name	Type	Description
geometry	ol.geom.Geometry	Geometry.
options	Write options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are writing. If not provided, the defaultDataProjection of the format is assigned (where set). If no defaultDataProjection is set for a format, the features will be returned in the featureProjection. featureProjection ol.proj.ProjectionLike Projection of the feature geometries that will be serialized by the format writer. rightHanded boolean | undefined When writing geometries, follow the right-hand rule for linear ring orientation. This means that polygons will have counter-clockwise exterior rings and clockwise interior rings. By default, coordinates are serialized as they are provided at construction. If true, the right-hand rule will be applied. If false, the left-hand rule will be applied (clockwise for exterior and counter-clockwise for interior rings). Note that not all formats support this. The GeoJSON format does use this property when writing geometries.

Returns:

GeoJSON.

writeGeometryObject(geometry, opt_options){GeoJSONGeometry|GeoJSONGeometryCollection}

src/ol/format/geojsonformat.js, line 611

Encode a geometry as a GeoJSON object.

Name	Type	Description
geometry	ol.geom.Geometry	Geometry.
options	Write options. Name Type Description dataProjection ol.proj.ProjectionLike Projection of the data we are writing. If not provided, the defaultDataProjection of the format is assigned (where set). If no defaultDataProjection is set for a format, the features will be returned in the featureProjection. featureProjection ol.proj.ProjectionLike Projection of the feature geometries that will be serialized by the format writer. rightHanded boolean | undefined When writing geometries, follow the right-hand rule for linear ring orientation. This means that polygons will have counter-clockwise exterior rings and clockwise interior rings. By default, coordinates are serialized as they are provided at construction. If true, the right-hand rule will be applied. If false, the left-hand rule will be applied (clockwise for exterior and counter-clockwise for interior rings). Note that not all formats support this. The GeoJSON format does use this property when writing geometries.

Returns:

Object.