Tagairt API GIS QuerySetLink to this heading

Cuardaigh SpásúlaLink to this heading

Tá na cuardaigh spásúla sa chuid seo ar fáil le haghaidh: aicme: GeometryField agus:class: Rasterfield.

For an introduction, see the spatial lookups introduction. For an overview of what lookups are compatible with a particular spatial backend, refer to the spatial lookup compatibility table.

Cuardaigh le rastersLink to this heading

Tugtar na samplaí go léir sa tagairt thíos do réimsí geoiméadrachta agus ionchuir, ach is féidir na cuardaigh a úsáid ar an mbealach céanna le rasters ar an dá thaobh. < https://postgis.net/docs/RT_ST_Polygon.html>Aon uair nach dtacaíonn cuardach le hionchur raster, déantar an t-ionchur a thiontú go géiméadracht go huathoibríoch nuair is gá ag baint úsáide as an bhfeidhm ST_Polygon. <spatial-lookup-raster>Féach freis:ref: `réamhrá ar chuardach raster `.

Is féidir na hoibreoirí bunachar sonraí a úsáideann na cuardaigh a roinnt ina thrí chatagóir:

Tacaíocht raster dúchasach N: glacann an t-oibreoir le rastrí go dúchasach ar an dá thaobh den chuardach, agus is féidir ionchur raster a mheascadh le hionchuir geoiméadrachta.
Tacaíocht raster déthaobhach B: ní thacaíonn an t-oibreoir le rasters ach amháin má fhaigheann an dá thaobh den chuardach ionchuir raster. Déantar sonraí raster a thiontú go huathoibríoch go geoiméadraí le haghaidh cuardaigh measctha
Tacaíocht tiontaithe geoiméadais C. Níl tacaíocht raster dúchasach ag an lorg, déantar na sonraí raster go léir a thiontú go geoiméadraí go huathoibríoch.

Taispeánann na samplaí thíos an coibhéis SQL do na cuardaigh sna cineálacha éagsúla tacaíochta raster. Baineann an patrún céanna le gach cuardach spásúil.

Cás	Cuardaigh	Coibhéis SQL
N, B	`rast__contains=rst`	``ST_Contains (réidh, an chéad) ``
N, B	``rast__1__contains= (an chéad, 2) ``	``ST_Contains (ceart, 1, an chéad, 2) ``
B, C	`rast__contains=geom`	``ST_Contains (ST_polygon (ar dheis), geom) ``
B, C	`rast__1__contains=geom`	``ST_Contains (ST_polygon (ceart, 1), geom) ``
B, C	`poly__contains=rst`	``ST_Contains (poly, ST_polygon (rst)) ``
B, C	``poly__contains= (an chéad, 1) ``	``ST_Contains (poly, ST_polygon (rst, 1)) ``
C	`rast__crosses=rst`	``ST_Crosses (ST_polygon (ar dheis), ST_polygon (an chéad)) ``
C	``rast__1__crosses= (an chéad, 2) ``	``ST_Crosses (ST_polygon (ceart, 1), ST_polygon (an chéad, 2)) ``
C	`rast__crosses=geom`	``ST_Crosses (ST_polygon (ar dheis), geom) ``
C	`poly__crosses=rst`	``ST_Crosses (poli, ST_polygon (rst)) ``

Ní thacaítear le cuardaigh spásúla le rasters ach le cúltaca PostGIS (ainmnítear mar PGraster sa chuid seo).

`bbcontains`Link to this heading

Infhaighteacht: `PostGIS`__ < https://postgis.net/docs/ST_Geometry_Contain.html>, MariaDB, MySQL, Spatialite, PGraster (Dúchasach)

Tástálacha má tá bosca teorainneacha an geoiméadra cuardaigh go hiomlán i mbosca teorainneacha an ghéimseadra nó sa réimse raster.

Sampla:

Code

Zipcode.objects.filter(poly__bbcontains=geom)

Cúltaca	Coibhéis SQL
PostGIS	`poly ~ geom`
MariaDB	``MBRContains (poly, geom) ``
MySQL	``MBRContains (poly, geom) ``
Spatialite	``MBRContains (poly, geom) ``

`bboverlaps`Link to this heading

Infhaighteacht: `PostGIS`__ < https://postgis.net/docs/geometry_overlaps.html>, MariaDB, MySQL, Spatialite, PGraster (Dúchasach)

Déanann tástálacha má fhorluíonn bosca teorainneacha an réimse geoiméadachta bosca teorainneacha an choiméadra cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__bboverlaps=geom)

Cúltaca	Coibhéis SQL
PostGIS	`Polai & & Geom`
MariaDB	``Mbroverlaps (poly, geom) ``
MySQL	``Mbroverlaps (poly, geom) ``
Spatialite	``Mbroverlaps (poly, geom) ``

`Coimeádaí`Link to this heading

Infhaighteacht: `PostGIS`__ < https://postgis.net/docs/ST_Geometry_Contained.html>, MariaDB, MySQL, Spatialite, PGraster (Dúchasach)

Tástálacha má tá bosca teorainneacha an réimse geoiméadachta cuardaigh go hiomlán i mbosca teorainneacha an réimse geoiméadrach.

Sampla:

Code

Zipcode.objects.filter(poly__contained=geom)

Cúltaca	Coibhéis SQL
PostGIS	`Poly @ geom`
MariaDB	``MBRwithin (poly, geom) ``
MySQL	``MBRwithin (poly, geom) ``
Spatialite	``MBRwithin (poly, geom) ``

`Coimeád`Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Bilateral)

Tástálacha má tá an geoiméadracht cuardaigh sa réimse geoiméadrach spásúil.

Sampla:

Code

Zipcode.objects.filter(poly__contains=geom)

Cúltaca	Coibhéis SQL
PostGIS	``ST_Contains (poly, geom) ``
Oracle	``SDO_CONTAINS (poly, geom) ``
MariaDB	``ST_Contains (poly, geom) ``
MySQL	``ST_Contains (poly, geom) ``
Spatialite	``Tá (poly, geom) ``

``coinníomhaíon_ceart ``Link to this heading

< https://postgis.net/docs/ST_ContainsProperly.html>*Infhaighteacht*: `PostGIS`__, PGraster (Déthaobhach)

Filleann sé fíor má thrasnaíonn an geoiméadracht cuardaigh taobh istigh den réimse geoiméadrach, ach ní an teorainn (nó an taobh amuigh).

Sampla:

Code

Zipcode.objects.filter(poly__contains_properly=geom)

Cúltaca	Coibhéis SQL
PostGIS	``ST_CONTAINSProperly (poly, geom) ``

``clúdaithe ag ``Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, PGRaster (Bilateral), SpatiaLite

Tástálacha mura bhfuil aon phointe sa réimse geoiméadrach lasmuigh den ghéimseadracht cuardaigh [#fncovers] _

Sampla:

Code

Zipcode.objects.filter(poly__coveredby=geom)

Cúltaca	Coibhéis SQL
PostGIS	``St_CoveredBy (poly, geom) ``
Oracle	``SDO_COVEREDBY (poly, geom) ``
MariaDB	`MBRCoveredBy(poly, geom)`
MySQL	`MBRCoveredBy(poly, geom)`
Spatialite	``CoveredBy (poly, geom) ``

``clúdaithe ``Link to this heading

Availability: PostGIS, Oracle, MySQL, PGRaster (Bilateral), SpatiaLite

Tástálacha mura bhfuil aon phointe sa ghéimseadracht cuardaigh lasmuigh den réimse geoiméadachta [#fncovers] _

Sampla:

Code

Zipcode.objects.filter(poly__covers=geom)

Cúltaca	Coibhéis SQL
PostGIS	``ST_Clúdaigh (poly, geom) ``
Oracle	``SDO_COVERS (poly, geom) ``
MySQL	`MBRCovers(poly, geom)`
Spatialite	``Clúdaigh (poli, geom) ``

`trasna`Link to this heading

Infhaighteacht: `PostGIS`__ < https://postgis.net/docs/ST_Crosses.html>, MariaDB, MySQL, Spatialite, PGraster (Comhshó)

Tástálacha má thrasnaíonn an réimse geoiméadrachta an geoiméadracht cuardaigh

Sampla:

Code

Zipcode.objects.filter(poly__crosses=geom)

Cúltaca	Coibhéis SQL
PostGIS	``St_Crosses (poly, geom) ``
MariaDB	``St_Crosses (poly, geom) ``
MySQL	``St_Crosses (poly, geom) ``
Spatialite	``Croisí (poli, geom) ``

`dícheangailti`Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Bilateral)

Tástálacha má tá an réimse geoiméadrachta neamhspleách go spásúil ón gcéimseadra cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__disjoint=geom)

Cúltaca	Coibhéis SQL
PostGIS	``ST_Disjoint (poly, geom) ``
Oracle	``SDO_GEOM.RELATE (poly, 'DISJOINT', geom, 0.05) ``
MariaDB	``ST_Disjoint (poly, geom) ``
MySQL	``ST_Disjoint (poly, geom) ``
Spatialite	``Disjoint (poly, geom) ``

`comhionannai`Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Conversion)

Tástálacha má tá an réimse geoiméadrach cothrom go spásúil leis an gcéiméadra cuardaigh

Sampla:

Code

Zipcode.objects.filter(poly__equals=geom)

Cúltaca	Coibhéis SQL
PostGIS	``ST_EQUALS (poly, geom) ``
Oracle	``SDO_EQUAL (poly, geom) ``
MariaDB	``ST_EQUALS (poly, geom) ``
MySQL	``ST_EQUALS (poly, geom) ``
Spatialite	``Cothrom (poly, geom) ``

`cruth, ``an gcéann_mar ``Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Bilateral)

Tástálacha má tá an réimse geoiméadrach “comhionann” leis an gcéiméadra cuardaigh. Ar Oracle, MySQL, agus SpatiaLite, déanann sé tástáil ar chomhionannas spásúil, agus ar PostGIS déanann sé tástáil ar chomhionannas boscaí teorainneacha.

Sampla:

Code

Zipcode.objects.filter(poly=geom)

Cúltaca	Coibhéis SQL
PostGIS	`poly ~= geom`
Oracle	``SDO_EQUAL (poly, geom) ``
MariaDB	``ST_EQUALS (poly, geom) ``
MySQL	``ST_EQUALS (poly, geom) ``
Spatialite	``Cothrom (poly, geom) ``

`Craitheangair`Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Bilateral)

Tástálacha má thrasnaíonn an réimse geoiméadrach an geoiméadracht cuardaigh go spásúil.

Sampla:

Code

Zipcode.objects.filter(poly__intersects=geom)

Cúltaca	Coibhéis SQL
PostGIS	``St_Intersects (poly, geom) ``
Oracle	``SDO_OVERLAPBDYINTERSECT (poly, geom) ``
MariaDB	``St_Intersects (poly, geom) ``
MySQL	``St_Intersects (poly, geom) ``
Spatialite	``Intersects (poly, geom) ``

`isempty`Link to this heading

Availability: PostGIS, SpatiaLite

Tástálacha má tá an geoiméadracht folamh.

Sampla:

Code

Zipcode.objects.filter(poly__isempty=True)

“Is bailí”Link to this heading

Availability: MariaDB, MySQL, PostGIS, Oracle, SpatiaLite

Tástálacha má tá an geoiméadracht bailí.

Sampla:

Code

Zipcode.objects.filter(poly__isvalid=True)

Cúltaca	Coibhéis SQL
MariaDB, MySQL, PostGIS, SpatiaLite	``St_IsValid (poli) ``
Oracle	`SDO_GEOM.VALIDATE_GEOMETRY_WITH_CONTEXT (poli, 0.05) = 'TRUE'`

`cineál_geom`Link to this heading

Availability: PostGIS, Oracle 23c+, MariaDB, MySQL, SpatiaLite

Returns the geometry type of the geometry field.

Sampla:

Code

Zipcode.objects.filter(poly__geom_type="POLYGON")

Cúltaca	Coibhéis SQL
PostGIS	`GeometryType(geom)`
MariaDB	`ST_GeometryType(geom)`
MySQL	`ST_GeometryType(geom)`
Oracle	`SDO_GEOMETRY.GET_GTYPE(geom)`
Spatialite	`GeometryType(geom)`

`num_dimensions`Link to this heading

Availability: PostGIS, SpatiaLite

Returns the number of dimensions used by the geometry.

Sampla:

Code

Zipcode.objects.filter(geom__num_dimensions=3)

Cúltaca	Coibhéis SQL
PostGIS, SpatiaLite	`ST_NDims(geom)`

`forlaps`Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Bilateral)

Tástálacha má fhorluíonn an réimse geoiméadrachta go spásúil ar an gcéiméadra

Cúltaca	Coibhéis SQL
PostGIS	``St_overforluí (poly, geom) ``
Oracle	``SDO_OVERLAPES (poly, geom) ``
MariaDB	``St_overforluí (poly, geom) ``
MySQL	``St_overforluí (poly, geom) ``
Spatialite	``Forluí (poly, geom) ``

``gaolmhar ``Link to this heading

Availability: PostGIS, MariaDB, Oracle, SpatiaLite, PGRaster (Conversion)

Tests if the geometry field is spatially related to the lookup geometry by the values given in the given pattern. This lookup requires a tuple parameter, (geom, pattern); the form of pattern will depend on the spatial backend:

MariaDB, PostGIS, agus SpatialiteLink to this heading

On these spatial backends the intersection pattern is a string comprising nine characters, which define intersections between the interior, boundary, and exterior of the geometry field and the lookup geometry. The intersection pattern matrix may only use the following characters: 1, 2, T, F, or *. This lookup type allows users to "fine tune" a specific geometric relationship consistent with the DE-9IM model. [1]

Sampla geoiméadair:

Code

# A tuple lookup parameter is used to specify the geometry and
# the intersection pattern (the pattern here is for 'contains').
Zipcode.objects.filter(poly__relate=(geom, "T*T***FF*"))

Coibhéis PostGIS agus MariaDB SQL:

SQL

SELECT ... WHERE ST_Relate(poly, geom, 'T*T***FF*')

Coibhéis SQL SpatialITE:

SQL

SELECT ... WHERE Relate(poly, geom, 'T*T***FF*')

Sampla raster:

Code

Zipcode.objects.filter(poly__relate=(rast, 1, "T*T***FF*"))
Zipcode.objects.filter(rast__2__relate=(rast, 1, "T*T***FF*"))

Coibhéis PostGIS SQL:

SQL

SELECT ... WHERE ST_Relate(poly, ST_Polygon(rast, 1), 'T*T***FF*')
SELECT ... WHERE ST_Relate(ST_Polygon(rast, 2), ST_Polygon(rast, 1), 'T*T***FF*')

OracleLink to this heading

Here the relation pattern is comprised of at least one of the nine relation strings: TOUCH, OVERLAPBDYDISJOINT, OVERLAPBDYINTERSECT, EQUAL, INSIDE, COVEREDBY, CONTAINS, COVERS, ON, and ANYINTERACT. Multiple strings may be combined with the logical Boolean operator OR, for example, 'inside+touch'. [2] The relation strings are case-insensitive.

Sampla:

Code

Zipcode.objects.filter(poly__relate=(geom, "anyinteract"))

Coibhéis Oracle SQL:

SQL

SELECT ... WHERE SDO_RELATE(poly, geom, 'anyinteract')

`teagmhálacha`Link to this heading

< https://postgis.net/docs/ST_Touches.html>*Infhaighteacht*: `PostGIS`__, Oracle, MariaDB, MySQL, Spatialite

Tástálacha má théann an réimse geoiméadrachta i dteagmháil go spásúil leis an

Sampla:

Code

Zipcode.objects.filter(poly__touches=geom)

Cúltaca	Coibhéis SQL
PostGIS	``St_Touches (poly, geom) ``
MariaDB	``St_Touches (poly, geom) ``
MySQL	``St_Touches (poly, geom) ``
Oracle	``SDO_TOUCH (poly, geom) ``
Spatialite	``Touches (poly, geom) ``

``laistigh de ``Link to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Bilateral)

Tástálacha má tá an réimse geoiméadrachta go spásúil laistigh den ghéimseadracht

Sampla:

Code

Zipcode.objects.filter(poly__within=geom)

Cúltaca	Coibhéis SQL
PostGIS	``St_within (poly, geom) ``
MariaDB	``St_within (poly, geom) ``
MySQL	``St_within (poly, geom) ``
Oracle	``SDO_INSIDE (poly, geom) ``
Spatialite	``Laistigh de (poly, geom) ``

``chlé `Link to this heading

< https://postgis.net/docs/ST_Geometry_Left.html>*Infhaighteacht*: `PostGIS`__, PGraster (Comhshó)

Tástálacha má tá bosca teorainneacha an réimse geoiméadrachta go docht ar thaobh clé de bhosca teorainneacha an geoiméadrachta cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__left=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly << geom

`ceart`Link to this heading

< https://postgis.net/docs/ST_Geometry_Right.html>*Infhaighteacht*: `PostGIS`__, PGraster (Comhshó)

Tástálacha má tá bosca teorainneacha an réimse geoiméadrachta go docht ar dheis de bhosca teorainneacha an geoiméadrachta cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__right=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly >> geom

``overlaps_chlé ``Link to this heading

< https://postgis.net/docs/ST_Geometry_Overleft.html>*Infhaighteacht*: `PostGIS`__, PGraster (Déthaobhach)

Tástálacha má théann bosca teorainneacha an réimse geoiméadrachta forluí nó má tá sé ar thaobh clé de bhosca teorainneacha an geoiméadrachta cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__overlaps_left=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly &< geom

`overlaps_right`Link to this heading

< https://postgis.net/docs/ST_Geometry_Overright.html>*Infhaighteacht*: `PostGIS`__, PGraster (Déthaobhach)

Tástálacha má théann bosca teorainneacha an réimse geoiméadrachta forluí nó má tá sé ar dheis de bhosca teorainneacha an geoiméadrachta cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__overlaps_right=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly &> geom

`overlaps_thuas`Link to this heading

< https://postgis.net/docs/ST_Geometry_Overabove.html>*Infhaighteacht*: `PostGIS`__, PGraster (Comhshó)

Tástálacha má théann bosca teorainneacha an réimse geoiméadachta forluí nó má tá sé os cionn bosca teorainneacha an geoiméadrachta cuardaigh

Sampla:

Code

Zipcode.objects.filter(poly__overlaps_above=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly |&> geom

`overlaps_thíos`Link to this heading

< https://postgis.net/docs/ST_Geometry_Overbelow.html>*Infhaighteacht*: `PostGIS`__, PGraster (Comhshó)

Tástálacha má théann bosca teorainneacha an réimse geoiméadrachta forluí nó má tá sé faoi bhun bosca teorainneacha an ghéimseadrachta cu

Sampla:

Code

Zipcode.objects.filter(poly__overlaps_below=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly &<| geom

`docht thuas`Link to this heading

< https://postgis.net/docs/ST_Geometry_Above.html>*Infhaighteacht*: `PostGIS`__, PGraster (Comhshó)

Tástálacha má tá bosca teorainneacha an réimse geoiméadachta go docht os cionn bosca teorainneacha an ghéimseadra cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__strictly_above=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly |>> geom

``docht thíos ``Link to this heading

< https://postgis.net/docs/ST_Geometry_Below.html>*Infhaighteacht*: `PostGIS`__, PGraster (Comhshó)

Tástálacha má tá bosca teorainneacha an réimse geoiméadrach faoi bhun bosca teorainneacha an ghéimseadrachta cuardaigh.

Sampla:

Code

Zipcode.objects.filter(poly__strictly_below=geom)

Coibhéis PostGIS:

SQL

SELECT ... WHERE poly <<| geom

Cuardaigh FadLink to this heading

Availability: PostGIS, Oracle, MariaDB, MySQL, SpatiaLite, PGRaster (Native)

<distance-queries>Le haghaidh forbhreathnú ar cheisteanna achair a dhéanamh, féach le do thoil faoir:ref: `réamhrá ceisteanna achair `.

Tá an fhoirm seo a leanas ag cuardach achair:

Text

<field>__<distance lookup>=(<geometry/raster>, <distance value>[, "spheroid"])
<field>__<distance lookup>=(<raster>, <band_index>, <distance value>[, "spheroid"])
<field>__<band_index>__<distance lookup>=(<raster>, <band_index>, <distance value>[, "spheroid"])

Is é an luach a chuirtear isteach i gcuardach achair; tá an chéad dá luach éigeantach, agus is iad an geoiméadra chun achair a ríomh, agus luach achair (uimhir in aonaid den réimse, a: aicme: ~django.contrib.gis.Measure.distance réad, nó a:doc: `</ref/models/expressions> léiriú fiosraithe'). Chun innéacs banna a chur chuig an lorg, bain úsáid as 3-tuple ina bhfuil an dara iontráil an t-innéacs banna.

Ar gach cuardach achair ach amháin: lookup: dwithin, féadfar eilimint roghnach, spheroid, a chur san áireamh chun na feidhmeanna ríofa achair spheroid níos cruinne a úsáid ar réimsí le córas comhordaithe geodéiseach.

< https://postgis.net/docs/ST_Distance_Spheroid.html> < https://postgis.net/docs/ST_DistanceSphere.html>Ar PostgreSQL, úsáideann an rogha 'spheroid' `ST_distanceSpheroid`__ in ionad `ST_distanceSphere`__. Úsáidtear an fheidhm `ST_distance`__ níos simplí le córais chomhordaithe ré< https://postgis.net/docs/ST_Distance.html> amh-mheasta. Déantar rasters a thiontú go geoiméadraí le haghaidh cuardaigh bunaithe ar spheroid.

`Fachad_gt`Link to this heading

Tugann samhlacha ar ais ina bhfuil an fad chuig an réimse geoiméadais ón gcéimseadra cuardaigh níos mó ná an luach achair a thugtar.

Sampla:

Code

Zipcode.objects.filter(poly__distance_gt=(geom, D(m=5)))

Cúltaca	Coibhéis SQL
PostGIS	`ST_distance/ST_distance_sphere (poly, geom) > 5`
MariaDB	`St_distance (poly, geom) > 5`
MySQL	`St_distance (poly, geom) > 5`
Oracle	`SDO_GEOM.SDO_DISTANCE (poli, geom, 0.05) > 5`
Spatialite	`Fad (poli, geom) > 5`

`achtar_gte`Link to this heading

Tugann samhlacha ar ais ina bhfuil an fad chuig an réimse geoiméadais ón gcéimseadra cuardaigh níos mó ná nó cothrom leis an luach achair ar leith.

Sampla:

Code

Zipcode.objects.filter(poly__distance_gte=(geom, D(m=5)))

Cúltaca	Coibhéis SQL
PostGIS	`ST_distance/ST_distance_sphere (poly, geom) >= 5`
MariaDB	`St_distance (poly, geom) >= 5`
MySQL	`St_distance (poly, geom) >= 5`
Oracle	`SDO_GEOM.SDO_DISTANCE (poli, geom, 0.05) >= 5`
Spatialite	`Fad (poli, geom) >= 5`

`Fachad_lt`Link to this heading

Tugann samhlacha ar ais ina bhfuil an fad go réimse an geoiméadais ón gcéimseadra cuardaigh níos lú ná an luach achair a thugtar.

Sampla:

Code

Zipcode.objects.filter(poly__distance_lt=(geom, D(m=5)))

Cúltaca	Coibhéis SQL
PostGIS	`ST_distance/ST_distance_sphere (poly, geom) < 5`
MariaDB	`St_distance (poly, geom) <5`
MySQL	`St_distance (poly, geom) <5`
Oracle	`SDO_GEOM.SDO_DISTANCE (poli, geom, 0.05) < 5`
Spatialite	`Fad (poli, geom) < 5`

`Fachad_lte`Link to this heading

Tugann samhlacha ar ais ina bhfuil an fad chuig an réimse geoiméadais ón gcéimseadra cuardaigh níos lú ná nó cothrom leis an luach achair ar leith.

Sampla:

Code

Zipcode.objects.filter(poly__distance_lte=(geom, D(m=5)))

Cúltaca	Coibhéis SQL
PostGIS	`ST_distance/ST_distance_sphere (poly, geom) <= 5`
MariaDB	`ST_distance (poly, geom) <= 5`
MySQL	`ST_distance (poly, geom) <= 5`
Oracle	`SDO_GEOM.SDO_DISTANCE (poli, geom, 0.05) <= 5`
Spatialite	`Fad (poli, geom) <= 5`

``thíníLink to this heading

Tuairisceáin samhlacha ina bhfuil an fad go réimse an geoiméadais ón gcéimseadra cuardaigh laistigh den achar sonraithe óna chéile. Tabhair faoi deara nach féidir leat rudaí:class: ~django.contrib.gis.Measure.distance a sholáthar ach má tá na geoiméadrachtaí spriocdhírithe i gcóras réamh-mheasta. Maidir le geoiméadraí geografacha, ba chóir duit aonaid den réimse geoiméadrach a úsáid (m.sh. céimeanna do WGS84`).

Sampla:

Code

Zipcode.objects.filter(poly__dwithin=(geom, D(m=5)))

Cúltaca	Coibhéis SQL
PostGIS	``St_dWithin (poly, geom, 5) ``
Oracle	``SDO_WITHIN_DISTANCE (poly, geom, 5) ``
Spatialite	``PTdistWithin (poly, geom, 5) ``

Feidhmeanna ChomLink to this heading

Soláthraíonn Django roinnt feidhmeanna comhiomlán atá sonrach le GIS. Le haghaidh sonraí maidir le conas na feidhmeanna comhiomlána seo a úsáid, féach:doc: `an treoir ábhair ar chomhiomlán' </topics/db/aggregation>.

Argóint Eochairfho	Cur síos
``lamháltas ``	This keyword is for Oracle only. It is for the tolerance value used by the `SDOAGGRTYPE` procedure; the `Oracle documentation`__ has more details.

Sampla:

Python console

>>> from django.contrib.gis.db.models import Extent, Union
>>> WorldBorder.objects.aggregate(Extent("mpoly"), Union("mpoly"))

`Bailiúch`Link to this heading

class Collect(geo_field, filter=None)Link to this definition

Availability: PostGIS, MariaDB, MySQL, SpatiaLite

Filleann sé réad geoiméadachta GEOMETRYCOLLECTION nó réad geoiméadais MULTI ón gcolún geoiméadrach. Tá sé seo cosúil le leagan simplithe den chomhiomlán: aicme: Union, ach amháin gur féidir leis a bheith roinnt orduithe méide níos tapa ná aontas a dhéanamh toisc go rollaíonn sé geoiméadraí i mbailiúchán nó ilréad, gan cúram faoi theorainneacha a thuaslagadh.

`Faoi láimhse`Link to this heading

class Extent(geo_field, filter=None)Link to this definition

< https://postgis.net/docs/ST_Extent.html>*Infhaighteacht*: `PostGIS`__, Oracle, Spatialite

Tugann sé ar ais méid na geo_field` go léir sa QuerySet mar 4-tuple, lena n-áirítear an comhordanáid íochtarach ar chlé agus an comhordanáid uachtarach ar dheis.

Sampla:

Python console

>>> qs = City.objects.filter(name__in=("Houston", "Dallas")).aggregate(Extent("poly"))
>>> print(qs["poly__extent"])
(-96.8016128540039, 29.7633724212646, -95.3631439208984, 32.782058715820)

`Extent3D`Link to this heading

class Extent3D(geo_field, filter=None)Link to this definition

< https://postgis.net/docs/ST_3DExtent.html>*Infhaighteacht*: `PostGis`__

Filleann sé méid 3D gach geo_field sa QuerySet` mar thúpla 6, lena n-áirítear an comhordanáid íochtarach ar chlé agus an comhordanáid uachtarach ar dheis (gach ceann acu le comhordanáidí x, y, agus z).

Sampla:

Python console

>>> qs = City.objects.filter(name__in=("Houston", "Dallas")).aggregate(Extent3D("poly"))
>>> print(qs["poly__extent3d"])
(-96.8016128540039, 29.7633724212646, 0, -95.3631439208984, 32.782058715820, 0)

`Makeline`Link to this heading

class MakeLine(geo_field, filter=None)Link to this definition

< https://postgis.net/docs/ST_MakeLine.html>*Infhaighteacht*: `PostGis`__, Spatialite

Filleann sé Linestring a tógadh ó na geoiméadrachtaí réimse pointe sa QuerySet. Faoi láthair, níl aon éifeacht ag ordú an tacar fiosrúcháin.

Sampla:

Python console

>>> qs = City.objects.filter(name__in=("Houston", "Dallas")).aggregate(MakeLine("poly"))
>>> print(qs["poly__makeline"])
LINESTRING (-95.3631510000000020 29.7633739999999989, -96.8016109999999941 32.7820570000000018)

`Aontas`Link to this heading

class Union(geo_field, filter=None)Link to this definition

< https://postgis.net/docs/ST_Union.html>*Infhaighteacht*: `PostGIS`__, Oracle, Spatialite

Tugann an modh seo a: aicme: ~django.contrib.gis.geos.geosgeometry réad a chuimsíonn aontas gach geoiméadair sa tacar fiosrúcháin. Tabhair faoi deara le do thoil go bhfuil úsáid “Union” dian ar phróiseálaí agus go bhféadfadh sé go dtógfadh sé go leor ama ar cheisteanna móra.

Sampla:

Python console

>>> u = Zipcode.objects.aggregate(Union(poly))  # This may take a long time.
>>> u = Zipcode.objects.filter(poly__within=bbox).aggregate(
...     Union(poly)
... )  # A more sensible approach.

Fonótaí

Tagairt API GIS QuerySetLink to this heading#

Cuardaigh SpásúlaLink to this heading#

Cuardaigh le rastersLink to this heading#

bbcontainsLink to this heading#

bboverlapsLink to this heading#

CoimeádaíLink to this heading#

CoimeádLink to this heading#

``coinníomhaíon_ceart ``Link to this heading#

``clúdaithe ag ``Link to this heading#

``clúdaithe ``Link to this heading#

trasnaLink to this heading#

dícheangailtiLink to this heading#

comhionannaiLink to this heading#

`cruth, ``an gcéann_mar ``Link to this heading#

CraitheangairLink to this heading#

isemptyLink to this heading#

“Is bailí”Link to this heading#

cineál_geomLink to this heading#

num_dimensionsLink to this heading#

forlapsLink to this heading#

``gaolmhar ``Link to this heading#

MariaDB, PostGIS, agus SpatialiteLink to this heading#

OracleLink to this heading#

teagmhálachaLink to this heading#

``laistigh de ``Link to this heading#

``chlé `Link to this heading#

ceartLink to this heading#

``overlaps_chlé ``Link to this heading#

overlaps_rightLink to this heading#

overlaps_thuasLink to this heading#

overlaps_thíosLink to this heading#

docht thuasLink to this heading#

``docht thíos ``Link to this heading#

Cuardaigh FadLink to this heading#

Fachad_gtLink to this heading#

achtar_gteLink to this heading#

Fachad_ltLink to this heading#

Fachad_lteLink to this heading#

``thíníLink to this heading#

Feidhmeanna ChomLink to this heading#

BailiúchLink to this heading#

Faoi láimhseLink to this heading#

Extent3DLink to this heading#

MakelineLink to this heading#

AontasLink to this heading#

Tagairt API GIS QuerySetLink to this heading

Cuardaigh SpásúlaLink to this heading

Cuardaigh le rastersLink to this heading

`bbcontains`Link to this heading

`bboverlaps`Link to this heading

`Coimeádaí`Link to this heading

`Coimeád`Link to this heading

``coinníomhaíon_ceart ``Link to this heading

``clúdaithe ag ``Link to this heading

``clúdaithe ``Link to this heading

`trasna`Link to this heading

`dícheangailti`Link to this heading

`comhionannai`Link to this heading

`cruth, ``an gcéann_mar ``Link to this heading

`Craitheangair`Link to this heading

`isempty`Link to this heading

“Is bailí”Link to this heading

`cineál_geom`Link to this heading

`num_dimensions`Link to this heading

`forlaps`Link to this heading

``gaolmhar ``Link to this heading

MariaDB, PostGIS, agus SpatialiteLink to this heading

OracleLink to this heading

`teagmhálacha`Link to this heading

``laistigh de ``Link to this heading

``chlé `Link to this heading

`ceart`Link to this heading

``overlaps_chlé ``Link to this heading

`overlaps_right`Link to this heading

`overlaps_thuas`Link to this heading

`overlaps_thíos`Link to this heading

`docht thuas`Link to this heading

``docht thíos ``Link to this heading

Cuardaigh FadLink to this heading

`Fachad_gt`Link to this heading

`achtar_gte`Link to this heading

`Fachad_lt`Link to this heading

`Fachad_lte`Link to this heading

``thíníLink to this heading

Feidhmeanna ChomLink to this heading

`Bailiúch`Link to this heading

`Faoi láimhse`Link to this heading

`Extent3D`Link to this heading

`Makeline`Link to this heading

`Aontas`Link to this heading