A collection of non-spatial and spatial attributes.
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Inheritance diagram for Geo::OGR::Feature:

Collaboration diagram for Geo::OGR::Feature:

Public Member Functions
public Geo::OGR::Feature	Clone ()

public method	DumpReadable ()

public scalar	Equal (scalar feature)

public scalar	FID (scalar id)
	Get or set the id of this feature. More...

public method	Field (scalar name, scalar value,...)
	Get, set, or unset the field value. More...

public method	FillUnsetWithDefault ()

public method	Geometry (scalar name, scalar geometry)
	Get or set the value of a geometry field. More...

public Geo::OGR::FeatureDefn	GetDefn ()

public scalar	GetFID ()

public list	GetField (scalar name)

public scalar	GetFieldDefn (scalar name)

public list	GetFieldNames ()

public scalar	GetGeomFieldDefn (scalar name)

public method	GetNativeData ()

public method	GetNativeMediaType ()

public hash reference	GetSchema ()
	Get the schema of this feature. More...

public scalar	GetStyleString ()

public method	IsFieldNull ()

public method	IsFieldSetAndNotNull ()

public Geo::OGR::Layer	Layer ()

public hash reference	Row (hash row)

public method	SetFID (scalar id)

public method	SetField (scalar name, array Value)

public method	SetFieldNull ()

public method	SetFrom (scalar other, scalar forgiving=1, hashref map)

public method	SetNativeData ()

public method	SetNativeMediaType ()

public method	SetStyleString (scalar string)

public list	Tuple (array tuple)

public scalar	Validate (list flags)

public Geo::OGR::Feature	new (hash schema)
	Create a new feature. More...

Public Member Functions inherited from Geo::OGR
public list	ByteOrders ()

public Geo::GDAL::Driver	Driver (scalar name)

public list	DriverNames ()

public list	Drivers ()

public method	Flatten ()

public scalar	GeometryTypeModify (scalar type, scalar modifier)

public scalar	GeometryTypeTest (scalar type, scalar test, scalar type2)

public list	GeometryTypes ()

public method	GetNonLinearGeometriesEnabledFlag ()

public method	GetOpenDSCount ()

public method	HasM ()

public method	HasZ ()

public Geo::GDAL::Dataset	Open (scalar name, scalar update=0)

public Geo::GDAL::Dataset	OpenShared (scalar name, scalar update=0)

public method	SetGenerate_DB2_V72_BYTE_ORDER (scalar Generate_DB2_V72_BYTE_ORDER)

public method	SetNonLinearGeometriesEnabledFlag ()

Detailed Description

A collection of non-spatial and spatial attributes.

A feature is a collection of non-spatial and spatial attributes and
an id, which is a special attribute, and data records according to
this data model. Attributes are called fields and some fields are
spatial, i.e., their value is a geometry. Fields have at least a
name and a type. Features may exist within a layer or
separetely. The data model of a feature is a definition object.

Definition at line 8473 of file all.dox.

Member Function Documentation

public Geo::OGR::Feature Geo::OGR::Feature::Clone ( )

Object method.

Returns: a new Geo::OGR::Feature object

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public method Geo::OGR::Feature::DumpReadable ( )

Object method.
Write the contents of this feature to stdout.

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public scalar Geo::OGR::Feature::Equal ( scalar feature )

Object method.

Parameters

feature a Geo::OGR::Feature object for comparison

Returns: boolean

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public scalar Geo::OGR::Feature::FID ( scalar id )

Get or set the id of this feature.

Object method.

Parameters

id	[optional] the id to set for this feature.

Returns: integer the id of this feature.

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public method Geo::OGR::Feature::Field	(	scalar	name,
		scalar	value,
			...
	)

Get, set, or unset the field value.

Object method.

Parameters

name	the name (or the index) of the field.
value	a scalar, a list of scalars or a reference to a list. If undef, the field is unset. If a scalar or a list of scalars, the field is set from them.

Note: Non-scalar fields (for example Date) can be set either from a
scalar, which is then assumed to be a string and parsed, or from a
list of values (for example year, month, day for Date).; Setting and getting Integer64 fields requires 'use bigint' if
$Config{ivsize} is smaller than 8, i.e., in a 32 bit machine.

Returns: in non-void context the value of the field, which may be a
scalar or a list, depending on the field type. For unset fields the
undef value is returned.

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public method Geo::OGR::Feature::FillUnsetWithDefault ( )

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public method Geo::OGR::Feature::Geometry	(	scalar	name,
		scalar	geometry
	)

Get or set the value of a geometry field.

Object method.

Note: This method delivers the functionality of undocumented methods
SetGeometry($geometry), SetGeometryDirectly, SetGeomField,
SetGeomFieldDirectly, GetGeometry, GetGeometryRef.

Set or get the geometry in the feature. When setting, does a check
against the schema (GeometryType) of the feature. If the parameter
is a geometry object, it is cloned.

Parameters

name	[optional] the name of the spatial field, whose geometry is to be set. If not given, sets or gets the geometry of the first (or the single) spatial field.
geometry	[optional] a Geo::OGR::Geometry object or a reference to a hash from which such can be created (using Geo::OGR::Geometry::new).

Returns: in a non-void context the indicated geometry in the feature
as a Geo::OGR::Geometry object. The returned object contains a
reference to the actual geometry data in the feature (the geometry
is not cloned) and to the feature object, thus keeping the feature
object from being destroyed while the geometry object exists.

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public Geo::OGR::FeatureDefn Geo::OGR::Feature::GetDefn ( )

Object method.

Note: A.k.a GetDefnRef.

Returns: a Geo::OGR::FeatureDefn object, which represents the definition of this feature.

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public scalar Geo::OGR::Feature::GetFID ( )

Object method.

Returns: the feature id (an integer).

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public list Geo::OGR::Feature::GetField ( scalar name )

Object method.
See Field().

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public scalar Geo::OGR::Feature::GetFieldDefn ( scalar name )

Object method.
Get the definition of a field.

Parameters

name	the name of the field.

Returns: a Geo::OGR::FieldDefn object.

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public list Geo::OGR::Feature::GetFieldNames ( )

Object method.
Get the names of the fields in this feature.

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public scalar Geo::OGR::Feature::GetGeomFieldDefn ( scalar name )

Object method.
Get the definition of a spatial field.

Parameters

name	the name of the spatial field.

Returns: a Geo::OGR::GeomFieldDefn object.

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public method Geo::OGR::Feature::GetNativeData ( )

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public method Geo::OGR::Feature::GetNativeMediaType ( )

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public hash reference Geo::OGR::Feature::GetSchema ( )

Get the schema of this feature.

Object method.

Returns: the schema as a hash whose keywords are Name, StyleIgnored
and Fields. Fields is an anonymous array of first non-spatial and
then spatial field schemas as in Geo::OGR::FieldDefn::Schema() and
Geo::OGR::GeomFieldDefn::Schema().

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public scalar Geo::OGR::Feature::GetStyleString ( )

Object method.

Returns: a string

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public method Geo::OGR::Feature::IsFieldNull ( )

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public method Geo::OGR::Feature::IsFieldSetAndNotNull ( )

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public Geo::OGR::Layer Geo::OGR::Feature::Layer ( )

Object method.

Returns: the layer to which this feature belongs to or undef.

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public Geo::OGR::Feature Geo::OGR::Feature::new ( hash schema )

Create a new feature.

Class method.

Parameters

Named parameters:
- Schema a reference to a schema hash, or a Geo::OGR::Layer,
Geo::OGR::Feature, or Geo::OGR::FeatureDefn object.
- Values values for the feature attributes.
- StyleIgnored whether the style can be omitted when fetching
features. (default is false)

Schema is a hash with the following keys:
- Name name of the schema (not used).
- Fields a list of Geo::OGR::FieldDefn or Geo::OGR::GeomFieldDefn
objects or references to hashes from which fields can be created.
- GeometryType the geometry type if the feature has only one spatial field.

Note: Do not mix GeometryType and geometry fields in Fields list.; Old syntax where the argument is a Geo::OGR::FeatureDefn
object or Schema hash is supported.

Returns: a new Geo::OGR::Feature object.

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public hash reference Geo::OGR::Feature::Row ( hash row )

Object method.

Note: This method discards the data the destination feature (or
layer) does not support. Changes in data due to differences between
field types may also occur.

Get and/or set the data of the feature. The key of the (key,value)
pairs of the row is the field name. Special field names FID and
Geometry are used for feature id and (single) geometry
respectively. The geometry/ies is/are set and get using the
Geo::OGR::Feature::Geometry method. Field values are set using the
Geo::OGR::Feature::Field method.

Parameters

row	[optional] feature data in a hash.

Returns: a reference to feature data in a hash. Spatial fields are
returned as Geo::OGR::Geometry objects.

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public method Geo::OGR::Feature::SetFID ( scalar id )

Object method.

Parameters

id	the feature id.

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public method Geo::OGR::Feature::SetField	(	scalar	name,
		array	Value
	)

Object method.
See Field().

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# Number of lines of code in SetField: 63
sub SetField {
    my $self = shift;
    my $field = $self->GetFieldIndex(shift);
    my $arg = $_[0];
    if (@_ == 0 or !defined($arg)) {
        _UnsetField($self, $field);
        return;
    }
    $arg = [@_] if @_ > 1;
    my $type = $self->GetFieldType($field);
    if (ref($arg)) {
        if ($type == $Geo::OGR::OFTIntegerList) {
            SetFieldIntegerList($self, $field, $arg);
        }
        elsif ($type == $Geo::OGR::OFTInteger64List) {
            SetFieldInteger64List($self, $field, $arg);
        }
        elsif ($type == $Geo::OGR::OFTRealList) {
            SetFieldDoubleList($self, $field, $arg);
        }
        elsif ($type == $Geo::OGR::OFTStringList) {
            SetFieldStringList($self, $field, $arg);
        }
        elsif ($type == $Geo::OGR::OFTDate) {
            _SetField($self, $field, @$arg[0..2], 0, 0, 0, 0);
        }
        elsif ($type == $Geo::OGR::OFTTime) {
            $arg->[3] //= 0;
            _SetField($self, $field, 0, 0, 0, @$arg[0..3]);
        }
        elsif ($type == $Geo::OGR::OFTDateTime) {
            $arg->[6] //= 0;
            _SetField($self, $field, @$arg[0..6]);
        }
        elsif ($type == $Geo::OGR::OFTInteger64)
        {
            SetFieldInteger64($self, $field, $arg);
        }
        else {
            $type = i2s(field_type => $type);
            my $name = $self->GetFieldDefnRef($field)->Name;
            error("'$arg' is not a suitable value for field $name($type).");
        }
    } else {
        if ($type == $Geo::OGR::OFTBinary) {
            #$arg = unpack('H*', $arg); # remove when SetFieldBinary is available
            $self->SetFieldBinary($field, $arg);
        }
        elsif ($type == $Geo::OGR::OFTInteger64)
        {
            SetFieldInteger64($self, $field, $arg);
        }
        elsif ($type == $Geo::OGR::OFTInteger or $type == $Geo::OGR::OFTReal or $type == $Geo::OGR::OFTString)
        {
            _SetField($self, $field, $arg);
        }
        else {
            $type = i2s(field_type => $type);
            my $name = $self->GetFieldDefnRef($field)->Name;
            error("'$arg' is not a suitable value for field $name($type).");
        }
    }
}

public method Geo::OGR::Feature::SetFieldNull ( )

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public method Geo::OGR::Feature::SetFrom	(	scalar	other,
		scalar	forgiving = `1`,
		hashref	map
	)

Object method.

Parameters

other	a Geo::OGR::Feature object
forgiving	[optional] set to false if the operation should not continue if output fields do not match some of the source fields
map	[optional] a mapping from output field indexes to source fields, include into the hash all field indexes of this feature which should be set

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public method Geo::OGR::Feature::SetNativeData ( )

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public method Geo::OGR::Feature::SetNativeMediaType ( )

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public method Geo::OGR::Feature::SetStyleString ( scalar string )

Object method.

Parameters

string

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public list Geo::OGR::Feature::Tuple ( array tuple )

Object method.

Note: This method discards the data the destination feature (or
layer) does not support. Changes in data due to differences between
field types may also occur.; The schema of the tuple needs to be the same as that of the
feature.

Get and/set the data of the feature. The expected data in the tuple
is ([feature_id,] non-spatial fields, spatial fields). The fields in
the tuple are in the order they are in the schema. Field values are
set using the Geo::OGR::Feature::Field method. Geometries are set
and get using the Geo::OGR::Feature::Geometry method.

Parameters

tuple [optional] feature data in an array

Returns: feature data in an array

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public scalar Geo::OGR::Feature::Validate ( list flags )

Object method.

Parameters

flags one of more of null, geom_type, width,
allow_null_when_default, or all.

Exceptions

croaks with an error message if the feature is not valid.

Returns: integer denoting the validity of the feature object.

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The documentation for this class was generated from the following file:

all.dox

Public Member Functions

Detailed Description

Member Function Documentation