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add working examples for geo index

This commit is contained in:
jsteemann 2017-02-03 10:47:42 +01:00
parent d1ac87f58b
commit 70528fc5c5
2 changed files with 27 additions and 8 deletions
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33
Documentation/Books/Manual/Indexing/Geo.mdpp
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@ -94,20 +94,39 @@ Use GeoIndex with AQL SORT statement:
@startDocuBlockInline geoIndexSortOptimization
@EXAMPLE_ARANGOSH_OUTPUT{geoIndexSortOptimization}
~db._create("geo3")
db.geo2.ensureIndex({ type: "geo", fields: [ "location.latitude", "location.longitude" ] });
~db._create("geoSort")
db.geoSort.ensureIndex({ type: "geo", fields: [ "latitude", "longitude" ] });
| for (i = -90; i <= 90; i += 10) {
| for (j = -180; j <= 180; j += 10) {
| db.geo2.save({ name : "Name/" + i + "/" + j, location: { latitude : i, longitude : j } });
| db.geoSort.save({ name : "Name/" + i + "/" + j, latitude : i, longitude : j });
| }
}
var query = "FOR doc in geo3 SORT distance(doc.location.latitude, doc.location.longitude,0,0) LIMIT 100 RETURN doc"
db._explain(query);
db._execute(query);
~db._drop("geo3")
var query = "FOR doc in geoSort SORT distance(doc.latitude, doc.longitude, 0, 0) LIMIT 5 RETURN doc"
db._explain(query, {}, {colors: false});
db._query(query);
~db._drop("geoSort")
@END_EXAMPLE_ARANGOSH_OUTPUT
@endDocuBlock geoIndexSortOptimization
Use GeoIndex with AQL FILTER statement:
@startDocuBlockInline geoIndexFilterOptimization
@EXAMPLE_ARANGOSH_OUTPUT{geoIndexFilterOptimization}
~db._create("geoFilter")
db.geoFilter.ensureIndex({ type: "geo", fields: [ "latitude", "longitude" ] });
| for (i = -90; i <= 90; i += 10) {
| for (j = -180; j <= 180; j += 10) {
| db.geoFilter.save({ name : "Name/" + i + "/" + j, latitude : i, longitude : j });
| }
}
var query = "FOR doc in geoFilter FILTER distance(doc.latitude, doc.longitude, 0, 0) < 2000 RETURN doc"
db._explain(query, {}, {colors: false});
db._query(query);
~db._drop("geoFilter")
@END_EXAMPLE_ARANGOSH_OUTPUT
@endDocuBlock geoIndexFilterOptimization
<!-- js/common/modules/@arangodb/arango-collection-common.js-->
@startDocuBlock collectionGeo

2
Documentation/Books/Manual/Indexing/IndexBasics.mdpp
View File

@ -274,7 +274,7 @@ comparison coordinate, and to find documents with coordinates that are within a
radius around a comparison coordinate.
The geo index is used via dedicated functions in AQL, the simple queries
functions, and it is implicitly applied when in AQL a SORT or FILTER is used with
functions and it is implicitly applied when in AQL a SORT or FILTER is used with
the distance function. Otherwise it will not be used for other types of queries
or conditions.