地理边界聚合
编辑地理边界聚合编辑
一种指标聚合，用于计算包含 地理点 或 地理形状 字段所有值的地理边界框。
示例
response = client.indices.create(
index: 'museums',
body: {
mappings: {
properties: {
location: {
type: 'geo_point'
}
}
}
}
)
puts response
response = client.bulk(
index: 'museums',
refresh: true,
body: [
{
index: {
_id: 1
}
},
{
location: 'POINT (4.912350 52.374081)',
name: 'NEMO Science Museum'
},
{
index: {
_id: 2
}
},
{
location: 'POINT (4.901618 52.369219)',
name: 'Museum Het Rembrandthuis'
},
{
index: {
_id: 3
}
},
{
location: 'POINT (4.914722 52.371667)',
name: 'Nederlands Scheepvaartmuseum'
},
{
index: {
_id: 4
}
},
{
location: 'POINT (4.405200 51.222900)',
name: 'Letterenhuis'
},
{
index: {
_id: 5
}
},
{
location: 'POINT (2.336389 48.861111)',
name: 'Musée du Louvre'
},
{
index: {
_id: 6
}
},
{
location: 'POINT (2.327000 48.860000)',
name: "Musée d'Orsay"
}
]
)
puts response
response = client.search(
index: 'museums',
size: 0,
body: {
query: {
match: {
name: 'musée'
}
},
aggregations: {
viewport: {
geo_bounds: {
field: 'location',
wrap_longitude: true
}
}
}
}
)
puts response
PUT /museums
{
"mappings": {
"properties": {
"location": {
"type": "geo_point"
}
}
}
}
POST /museums/_bulk?refresh
{"index":{"_id":1}}
{"location": "POINT (4.912350 52.374081)", "name": "NEMO Science Museum"}
{"index":{"_id":2}}
{"location": "POINT (4.901618 52.369219)", "name": "Museum Het Rembrandthuis"}
{"index":{"_id":3}}
{"location": "POINT (4.914722 52.371667)", "name": "Nederlands Scheepvaartmuseum"}
{"index":{"_id":4}}
{"location": "POINT (4.405200 51.222900)", "name": "Letterenhuis"}
{"index":{"_id":5}}
{"location": "POINT (2.336389 48.861111)", "name": "Musée du Louvre"}
{"index":{"_id":6}}
{"location": "POINT (2.327000 48.860000)", "name": "Musée d'Orsay"}
POST /museums/_search?size=0
{
"query": {
"match": { "name": "musée" }
},
"aggs": {
"viewport": {
"geo_bounds": {
"field": "location",
"wrap_longitude": true
}
}
}
}
上述聚合演示了如何计算名称与“musée”匹配的所有文档的 location 字段的边界框。
上述聚合的响应
{
...
"aggregations": {
"viewport": {
"bounds": {
"top_left": {
"lat": 48.86111099738628,
"lon": 2.3269999679178
},
"bottom_right": {
"lat": 48.85999997612089,
"lon": 2.3363889567553997
}
}
}
}
}
geo_shape 字段上的地理边界聚合编辑
地理边界聚合也支持 geo_shape 字段。
如果 wrap_longitude 设置为 true（默认值），则边界框可以跨越国际日期变更线，并返回 top_left 经度大于 top_right 经度的边界。
例如，地理边界框的右上角经度通常大于左下角经度。但是，当区域跨越 180° 经线时，左下角经度的值将大于右上角经度的值。有关更多信息，请参阅开放地理空间联盟网站上的 地理边界框。
示例
response = client.indices.create(
index: 'places',
body: {
mappings: {
properties: {
geometry: {
type: 'geo_shape'
}
}
}
}
)
puts response
response = client.bulk(
index: 'places',
refresh: true,
body: [
{
index: {
_id: 1
}
},
{
name: 'NEMO Science Museum',
geometry: 'POINT(4.912350 52.374081)'
},
{
index: {
_id: 2
}
},
{
name: 'Sportpark De Weeren',
geometry: {
type: 'Polygon',
coordinates: [
[
[
4.965305328369141,
52.39347642069457
],
[
4.966979026794433,
52.391721758934835
],
[
4.969425201416015,
52.39238958618537
],
[
4.967944622039794,
52.39420969150824
],
[
4.965305328369141,
52.39347642069457
]
]
]
}
}
]
)
puts response
response = client.search(
index: 'places',
size: 0,
body: {
aggregations: {
viewport: {
geo_bounds: {
field: 'geometry'
}
}
}
}
)
puts response
PUT /places
{
"mappings": {
"properties": {
"geometry": {
"type": "geo_shape"
}
}
}
}
POST /places/_bulk?refresh
{"index":{"_id":1}}
{"name": "NEMO Science Museum", "geometry": "POINT(4.912350 52.374081)" }
{"index":{"_id":2}}
{"name": "Sportpark De Weeren", "geometry": { "type": "Polygon", "coordinates": [ [ [ 4.965305328369141, 52.39347642069457 ], [ 4.966979026794433, 52.391721758934835 ], [ 4.969425201416015, 52.39238958618537 ], [ 4.967944622039794, 52.39420969150824 ], [ 4.965305328369141, 52.39347642069457 ] ] ] } }
POST /places/_search?size=0
{
"aggs": {
"viewport": {
"geo_bounds": {
"field": "geometry"
}
}
}
}
{
...
"aggregations": {
"viewport": {
"bounds": {
"top_left": {
"lat": 52.39420966710895,
"lon": 4.912349972873926
},
"bottom_right": {
"lat": 52.374080987647176,
"lon": 4.969425117596984
}
}
}
}
}