GIS ProtoBuf module
Project description
Installation
pip install protobuf-gis
Additional functions
All messages has function toGeoJSON that returns a GeoJSON representation of a message.
Messages
Point
syntax = "proto3";
import "gis/protobuf/point.proto";
package test;
message Test {
gis.protobuf.Point2D point2d = 1;
gis.protobuf.Point3D point3d = 2;
gis.protobuf.MultiPoint2D multi_point2d = 3;
gis.protobuf.MultiPoint3D multi_point3d = 4;
}
Point2D
Structure with two fields of type float: x and y.
GeoJSON representation of this message is
{
'type': 'Point',
'coordinates': [x, y]
}
Point3D
Structure with three fields of type float: x, y and z.
GeoJSON representation of this message is
{
'type': 'Point',
'coordinates': [x, y, z]
}
MultiPoint2D
Structure with one repeated field of type gis.protobuf.Point2D: point.
GeoJSON representation of this message is
{
'type': 'MultiPoint',
'coordinates': [[x1, y1], [x2, y2]]
}
MultiPoint3D
Structure with one repeated field of type gis.protobuf.Point3D: point.
GeoJSON representation of this message is
{
'type': 'MultiPoint',
'coordinates': [[x1, y1, z1], [x2, y2, z2]]
}
LineString
syntax = "proto3";
import "gis/protobuf/linestring.proto";
package test;
message Test {
gis.protobuf.LineString2D line_string2d = 1;
gis.protobuf.LineString3D line_string3d = 2;
gis.protobuf.MultiLineString2D multi_line_string2d = 3;
gis.protobuf.MultiLineString3D multi_line_string3d = 4;
}
LineString2D
Structure with one repeated field of type gis.protobuf.Point2D: point.
GeoJSON representation of this message is
{
'type': 'LineString',
'coordinates': [[x1, y1], [x2, y2]]
}
LineString3D
Structure with one repeated field of type gis.protobuf.Point3D: point.
GeoJSON representation of this message is
{
'type': 'LineString',
'coordinates': [[x1, y1, z1], [x2, y2, z2]]
}
MultiLineString2D
Structure with one repeated field of type gis.protobuf.LineString2D: line_string.
GeoJSON representation of this message is
{
'type': 'MultiLineString',
'coordinates': [[[x1, y1], [x2, y2]], [[x3, y3], [x4, y4]]]
}
MultiLineString3D
Structure with one repeated field of type gis.protobuf.LineString3D: line_string.
GeoJSON representation of this message is
{
'type': 'MultiLineString',
'coordinates': [[[x1, y1, z1], [x2, y2, z2]], [[x3, y3, z3], [x4, y4, z4]]]
}
Polygon
syntax = "proto3";
import "gis/protobuf/point.proto";
package test;
message Test {
gis.protobuf.Polygon2D polugon2d = 1;
gis.protobuf.Polygon3D polugon3d = 2;
gis.protobuf.MultiPolygon2D multi_polugon2d = 3;
gis.protobuf.MultiPolygon3D multi_polugon3d = 4;
}
Polygon2D
Structure with one repeated field of type gis.protobuf.Point2D: point.
GeoJSON representation of this message is
{
'type': 'Polygon',
'coordinates': [[[x1, y1], [x2, y2]]]
}
Polygon3D
Structure with one repeated field of type gis.protobuf.Point3D: point.
GeoJSON representation of this message is
{
'type': 'Polygon',
'coordinates': [[[x1, y1, z1], [x2, y2, z2]]]
}
MultiPolygon2D
Structure with one repeated field of type gis.protobuf.Polygon2D: polygon.
GeoJSON representation of this message is
{
'type': 'MultiPolygon',
'coordinates': [[[[x1, y1], [x2, y2]]], [[[x3, y3], [x4, y4]]]]
}
MultiPolygon3D
Structure with one repeated field of type gis.protobuf.Polygon3D: polygon.
GeoJSON representation of this message is
{
'type': 'MultiPolygon',
'coordinates': [[[[x1, y1, z1], [x2, y2, z2]]], [[[x3, y3, z3], [x4, y4, z4]]]]
}
Usage
In proto/test.proto file:
syntax = "proto3";
import "gis/protobuf/point.proto";
package test;
message Test {
gis.protobuf.Point2D point = 1;
}
Build:
protoc --python_out=. -I /usr/include/ -I . proto/test.proto
Code:
from .proto.test_pb import Test
from gis.protobuf import Point2D
test = Test(point=Point2D(x=10, y=20))
print(test.point.toGeoJSON())
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