Creating GeoJSON from GeoDataFrame with feature IDs but without bbox using GeoPandas

Question

Here is the creation of an example GeoDataFrame, gdf:

import shapely.wkt
import geopandas as gpd

s0 = shapely.wkt.loads("POINT(0 0)")
s1 = shapely.wkt.loads("POINT(1 1)")
gdf = gpd.GeoDataFrame({'geometry':[s0, s1],'data':['a','b']})

I would like to write its contents to a GeoJSON. I would like to have feature id for each feature, but not bounding box. Ideal output:

{
"type": "FeatureCollection",
"features": [
{ "id": "1", "type": "Feature", "properties": { "data": "a" }, "geometry": { "type": "Point", "coordinates": [ 0.0, 0.0 ] } },
{ "id": "2", "type": "Feature", "properties": { "data": "b" }, "geometry": { "type": "Point", "coordinates": [ 1.0, 1.0 ] } }
]
}

My attempt:

gdf.to_file("example.geojson")

example.geojson becomes:

{
"type": "FeatureCollection",
"features": [
{ "type": "Feature", "properties": { "data": "a" }, "geometry": { "type": "Point", "coordinates": [ 0.0, 0.0 ] } },
{ "type": "Feature", "properties": { "data": "b" }, "geometry": { "type": "Point", "coordinates": [ 1.0, 1.0 ] } }
]
}

No id field. The thread Adding a feature id when writing to file provides a way:

gdf.__geo_interface__ is:

{'type': 'FeatureCollection',
 'features': [{'id': '0',
   'type': 'Feature',
   'properties': {'data': 'a'},
   'geometry': {'type': 'Point', 'coordinates': (0.0, 0.0)},
   'bbox': (0.0, 0.0, 0.0, 0.0)},
  {'id': '1',
   'type': 'Feature',
   'properties': {'data': 'b'},
   'geometry': {'type': 'Point', 'coordinates': (1.0, 1.0)},
   'bbox': (1.0, 1.0, 1.0, 1.0)}],
 'bbox': (0.0, 0.0, 1.0, 1.0)}

I could write this into a text file, and I would have the ids I want (from 0, not from 1, but I can live with that). This method however also adds bbox fields, which I'd like to avoid.

How can I create a GeoJSON from a GeoDataFrame with Feature ids, but without bboxes using GeoPandas?

---

For those who just want to do it, no matter with what, here is thread doing the above with ogr2ogr.

Answer 1

Try the to_json() method:

gdf.to_json()

It will result in this:

{
    "type": "FeatureCollection",
    "features":
        [
            {
                "id": "0",
                "type": "Feature",
                "properties": {
                    "data": "a"
                },
                "geometry": {
                    "type": "Point",
                    "coordinates": [0.0, 0.0]
                }
            },
            {
                "id": "1",
                "type": "Feature",
                "properties": {
                    "data": "b"
                },
                "geometry": {
                    "type": "Point",
                    "coordinates": [1.0, 1.0]
                }
            }
        ]
}