Class GEOSGeometryBase

django.contrib.gis.geos.geometry.GEOSGeometryBase

Declaration

class GEOSGeometryBase(GEOSBase)

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Methods

▷ def __and__(self, other)
Return the intersection of this Geometry and the other.
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▷ def __copy__(self)
Return a clone because the copy of a GEOSGeometry may contain an invalid pointer location if the original is garbage collected.
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▷ def __deepcopy__(self, memodict)
The `deepcopy` routine is used by the `Node` class of django.utils.tree; thus, the protocol routine needs to be implemented to return correct copies (clones) of these GEOS objects, which use C pointers.
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▷ def __eq__(self, other)
Equivalence testing, a Geometry may be compared with another Geometry or an EWKT representation.
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▷ def __getstate__(self)
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▷ def __hash__(self)
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▶ def __init__(self, ptr, cls)
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Overrides
This method is overriden in:
- django.contrib.gis.geos.geometry.GEOSGeometry
▷ def __or__(self, other)
Return the union of this Geometry and the other.
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▷ def __repr__(self)
Short-hand representation because WKT may be very large.
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▷ def __setstate__(self, state)
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▷ def __str__(self)
EWKT is used for the string representation.
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▷ def __sub__(self, other)
Return the difference this Geometry and the other.
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▷ def __xor__(self, other)
Return the symmetric difference of this Geometry and the other.
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▷ def area(self) @property
Return the area of the Geometry.
@property
def area(self)
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▷ def boundary(self) @property
Return the boundary as a newly allocated Geometry object.
@property
def boundary(self)
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▶ def buffer(self, width, quadsegs=8)

Return a geometry that represents all points whose distance from this

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Geometry is less than or equal to distance. Calculations are in the
Spatial Reference System of this Geometry. The optional third parameter sets
the number of segment used to approximate a quarter circle (defaults to 8).
(Text from PostGIS documentation at ch. 6.1.3)

▶ def buffer_with_style(self, width, quadsegs=8, end_cap_style=1, join_style=1, mitre_limit=5.0)
Same as buffer() but allows customizing the style of the buffer.
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```
End cap style can be round (1), flat (2), or square (3).
Join style can be round (1), mitre (2), or bevel (3).
Mitre ratio limit only affects mitered join style.
```
▷ def centroid(self) @property
The centroid is equal to the centroid of the set of component Geometries of highest dimension (since the lower-dimension geometries contribute zero "weight" to the centroid).
@property
def centroid(self)
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▷ def clone(self)
Clone this Geometry.
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▷ def contains(self, other)
Return true if other.within(this) returns true.
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▷ def convex_hull(self) @property
Return the smallest convex Polygon that contains all the points in the Geometry.
@property
def convex_hull(self)
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▷ def coord_seq(self) @property
Return a clone of the coordinate sequence for this Geometry.
@property
def coord_seq(self)
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▷ def covers(self, other)
Return True if the DE-9IM Intersection Matrix for the two geometries is T*****FF*, *T****FF*, ***T**FF*, or ****T*FF*. If either geometry is empty, return False.
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▷ def crosses(self, other)
Return true if the DE-9IM intersection matrix for the two Geometries is T*T****** (for a point and a curve,a point and an area or a line and an area) 0******** (for two curves).
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▷ def crs(self) @property
Alias for `srs` property.
@property
def crs(self)
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▷ def difference(self, other)
Return a Geometry representing the points making up this Geometry that do not make up other.
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▷ def dims(self) @property
Return the dimension of this Geometry (0=point, 1=line, 2=surface).
@property
def dims(self)
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▷ def disjoint(self, other)
Return true if the DE-9IM intersection matrix for the two Geometries is FF*FF****.
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▷ def distance(self, other)
Return the distance between the closest points on this Geometry and the other. Units will be in those of the coordinate system of the Geometry.
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▷ def empty(self) @property
Return a boolean indicating whether the set of points in this Geometry are empty.
@property
def empty(self)
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▷ def envelope(self) @property
Return the envelope for this geometry (a polygon).
@property
def envelope(self)
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▷ def equals(self, other)
Return true if the DE-9IM intersection matrix for the two Geometries is T*F**FFF*.
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▷ def equals_exact(self, other, tolerance=0)
Return true if the two Geometries are exactly equal, up to a specified tolerance.
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▷ def ewkb(self) @property
Return the EWKB representation of this Geometry as a Python buffer. This is an extension of the WKB specification that includes any SRID value that are a part of this geometry.
@property
def ewkb(self)
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▷ def ewkt(self) @property
Return the EWKT (SRID + WKT) of the Geometry.
@property
def ewkt(self)
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▷ def extent(self) @property
Return the extent of this geometry as a 4-tuple, consisting of (xmin, ymin, xmax, ymax).
@property
def extent(self)
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▷ def geom_type(self) @property
Return a string representing the Geometry type, e.g. 'Polygon'
@property
def geom_type(self)
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▷ def geom_typeid(self) @property
Return an integer representing the Geometry type.
@property
def geom_typeid(self)
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▷ def hasz(self) @property
Return whether the geometry has a 3D dimension.
@property
def hasz(self)
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▷ def hex(self) @property
Return the WKB of this Geometry in hexadecimal form. Please note that the SRID is not included in this representation because it is not a part of the OGC specification (use the `hexewkb` property instead).
@property
def hex(self)
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▷ def hexewkb(self) @property
Return the EWKB of this Geometry in hexadecimal form. This is an extension of the WKB specification that includes SRID value that are a part of this geometry.
@property
def hexewkb(self)
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▷ def intersection(self, other)
Return a Geometry representing the points shared by this Geometry and other.
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▷ def intersects(self, other)
Return true if disjoint return false.
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▷ def json(self) @property
Return GeoJSON representation of this Geometry.
@property
def json(self)
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▶ def kml(self) @property
Return the KML representation of this Geometry.
@property
def kml(self)
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Overrides
This method is overriden in:
- django.contrib.gis.geos.polygon.Polygon
- django.contrib.gis.geos.collections.GeometryCollection
▷ def length(self) @property
Return the length of this Geometry (e.g., 0 for point, or the circumference of a Polygon).
@property
def length(self)
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▷ def normalize(self)
Convert this Geometry to normal form (or canonical form).
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▷ def num_coords(self) @property
Return the number of coordinates in the Geometry.
@property
def num_coords(self)
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▷ def num_geom(self) @property
Return the number of geometries in the Geometry.
@property
def num_geom(self)
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▷ def num_points(self) @property
Return the number points, or coordinates, in the Geometry.
@property
def num_points(self)
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▷ def ogr(self) @property
Return the OGR Geometry for this Geometry.
@property
def ogr(self)
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▷ def overlaps(self, other)
Return true if the DE-9IM intersection matrix for the two Geometries is T*T***T** (for two points or two surfaces) 1*T***T** (for two curves).
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▷ def point_on_surface(self) @property
Compute an interior point of this Geometry.
@property
def point_on_surface(self)
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▷ def prepared(self) @property
Return a PreparedGeometry corresponding to this geometry -- it is optimized for the contains, intersects, and covers operations.
@property
def prepared(self)
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▷ def relate(self, other)
Return the DE-9IM intersection matrix for this Geometry and the other.
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▷ def relate_pattern(self, other, pattern)
Return true if the elements in the DE-9IM intersection matrix for the two Geometries match the elements in pattern.
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▷ def ring(self) @property
Return whether or not the geometry is a ring.
@property
def ring(self)
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▷ def simple(self) @property
Return false if the Geometry isn't simple.
@property
def simple(self)
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▶ def simplify(self, tolerance=0.0, preserve_topology=False)

Return the Geometry, simplified using the Douglas-Peucker algorithm to the specified tolerance (higher tolerance => less points). If no tolerance provided, defaults to 0.

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By default, don't preserve topology - e.g. polygons can be split,
collapse to lines or disappear holes can be created or disappear, and
lines can cross. By specifying preserve_topology=True, the result will
have the same dimension and number of components as the input. This is
significantly slower.

▷ def srid(self) @property
Get the SRID for the geometry. Return None if no SRID is set.
@property
def srid(self)
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▷ def srid(self, srid) @srid.setter
Set the SRID for the geometry.
@srid.setter
def srid(
self,
srid,
)
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▷ def srs(self) @property
Return the OSR SpatialReference for SRID of this Geometry.
@property
def srs(self)
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▷ def sym_difference(self, other)
Return a set combining the points in this Geometry not in other, and the points in other not in this Geometry.
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▷ def touches(self, other)
Return true if the DE-9IM intersection matrix for the two Geometries is FT*******, F**T***** or F***T****.
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▶ def transform(self, ct, clone=False)

Requires GDAL. Transform the geometry according to the given

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transformation object, which may be an integer SRID, and WKT or
PROJ string. By default, transform the geometry in-place and return
nothing. However if the `clone` keyword is set, don't modify the
geometry and return a transformed clone instead.

▷ def unary_union(self) @property
Return the union of all the elements of this geometry.
@property
def unary_union(self)
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▷ def union(self, other)
Return a Geometry representing all the points in this Geometry and other.
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▷ def valid(self) @property
Test the validity of this Geometry.
@property
def valid(self)
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▷ def valid_reason(self) @property
Return a string containing the reason for any invalidity.
@property
def valid_reason(self)
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▷ def within(self, other)
Return true if the DE-9IM intersection matrix for the two Geometries is T*F**F***.
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▷ def wkb(self) @property
Return the WKB (Well-Known Binary) representation of this Geometry as a Python buffer. SRID and Z values are not included, use the `ewkb` property instead.
@property
def wkb(self)
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▷ def wkt(self) @property
Return the WKT (Well-Known Text) representation of this Geometry.
@property
def wkt(self)
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Class methods

▷ def from_ewkt(ewkt) @staticmethod
@staticmethod
def from_ewkt(ewkt)
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▷ def from_gml(cls, gml_string) @classmethod
@classmethod
def from_gml(
cls,
gml_string,
)
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Inherited methods

Methods inherited from django.contrib.gis.ptr.CPointerBase:
__del__, ptr

Subclasses

django.contrib.gis.geos.geometry.GEOSGeometry

Reexports

Imported in django.contrib.gis.db.backends.postgis.operations.
Imported in django.contrib.gis.db.backends.mysql.operations.
Imported in django.contrib.gis.db.backends.spatialite.operations.
Imported in django.contrib.gis.db.backends.oracle.operations.

Django

Class GEOSGeometryBase

Declaration

Methods

Overrides

Overrides

Class methods

Inherited methods

Subclasses

Reexports