Cartesian-bounds aggregation
editCartesian-bounds aggregation
editA metric aggregation that computes the spatial bounding box containing all values for a Point or Shape field.
Example:
PUT /museums
{
"mappings": {
"properties": {
"location": {
"type": "point"
}
}
}
}
POST /museums/_bulk?refresh
{"index":{"_id":1}}
{"location": "POINT (491.2350 5237.4081)", "city": "Amsterdam", "name": "NEMO Science Museum"}
{"index":{"_id":2}}
{"location": "POINT (490.1618 5236.9219)", "city": "Amsterdam", "name": "Museum Het Rembrandthuis"}
{"index":{"_id":3}}
{"location": "POINT (491.4722 5237.1667)", "city": "Amsterdam", "name": "Nederlands Scheepvaartmuseum"}
{"index":{"_id":4}}
{"location": "POINT (440.5200 5122.2900)", "city": "Antwerp", "name": "Letterenhuis"}
{"index":{"_id":5}}
{"location": "POINT (233.6389 4886.1111)", "city": "Paris", "name": "Musée du Louvre"}
{"index":{"_id":6}}
{"location": "POINT (232.7000 4886.0000)", "city": "Paris", "name": "Musée d'Orsay"}
POST /museums/_search?size=0
{
"query": {
"match": { "name": "musée" }
},
"aggs": {
"viewport": {
"cartesian_bounds": {
"field": "location"
}
}
}
}
|
The |
Unlike the case with the geo_bounds aggregation,
there is no option to set wrap_longitude.
This is because the cartesian space is euclidean and does not wrap back on itself.
So the bounds will always have a minimum x value less than or equal to the maximum x value.
The above aggregation demonstrates how one would compute the bounding box of the location field for all documents with a name matching "musée".
The response for the above aggregation:
{
...
"aggregations": {
"viewport": {
"bounds": {
"top_left": {
"x": 232.6999969482422,
"y": 4886.111328125
},
"bottom_right": {
"x": 233.63890075683594,
"y": 4886.0
}
}
}
}
}
Cartesian Bounds Aggregation on shape fields
editThe Cartesian Bounds Aggregation is also supported on cartesian_shape fields.
Example:
PUT /places
{
"mappings": {
"properties": {
"geometry": {
"type": "shape"
}
}
}
}
POST /places/_bulk?refresh
{"index":{"_id":1}}
{"name": "NEMO Science Museum", "geometry": "POINT(491.2350 5237.4081)" }
{"index":{"_id":2}}
{"name": "Sportpark De Weeren", "geometry": { "type": "Polygon", "coordinates": [ [ [ 496.5305328369141, 5239.347642069457 ], [ 496.6979026794433, 5239.1721758934835 ], [ 496.9425201416015, 5239.238958618537 ], [ 496.7944622039794, 5239.420969150824 ], [ 496.5305328369141, 5239.347642069457 ] ] ] } }
POST /places/_search?size=0
{
"aggs": {
"viewport": {
"cartesian_bounds": {
"field": "geometry"
}
}
}
}
{
...
"aggregations": {
"viewport": {
"bounds": {
"top_left": {
"x": 491.2349853515625,
"y": 5239.4208984375
},
"bottom_right": {
"x": 496.9425048828125,
"y": 5237.408203125
}
}
}
}
}