Class: QgsRasterMarkerSymbolLayer

Raster marker symbol layer class.

Added in version 3.6.

Class Hierarchy

Base classes

QgsMarkerSymbolLayer	Abstract base class for marker symbol layers.
QgsSymbolLayer	Constructor for QgsSymbolLayer.

Subclasses

QgsAnimatedMarkerSymbolLayer

Animated marker symbol layer class.

Methods

calculateAspectRatio	Calculates the marker aspect ratio between width and height.
copyCommonProperties	Copies common properties to another layer.
defaultAspectRatio	Returns the default marker aspect ratio between width and height, 0 if not yet calculated.
fixedAspectRatio	Returns the marker aspect ratio between width and height to be used in rendering, if the value set is lower or equal to 0 the aspect ratio will be preserved in rendering
opacity	Returns the marker opacity.
path	Returns the marker raster image path.
preservedAspectRatio	Returns the preserved aspect ratio value, True if fixed aspect ratio has been lower or equal to 0.
setCommonProperties	Sets common class properties from a properties map.
setFixedAspectRatio	Set the marker aspect ratio between width and height to be used in rendering, if the value set is lower or equal to 0 the aspect ratio will be preserved in rendering
setOpacity	Set the marker opacity.
setPath	Set the marker raster image path.
setPreservedAspectRatio	Set preserved the marker aspect ratio between width and height.
updateDefaultAspectRatio	Calculates the default marker aspect ratio between width and height.

Static Methods

create	Creates a raster marker symbol layer from a string map of properties.
resolvePaths	Turns relative paths in properties map to absolute when reading and vice versa when writing.

class qgis.core.QgsRasterMarkerSymbolLayer

Bases: QgsMarkerSymbolLayer

__init__(path: str | None = '', size: float = DEFAULT_SVGMARKER_SIZE, angle: float = DEFAULT_SVGMARKER_ANGLE, scaleMethod: Qgis.ScaleMethod = DEFAULT_SCALE_METHOD)

Constructs raster marker symbol layer with picture from given absolute path to a raster image file

Parameters:

• path (Optional[str] = '')

• size (float = DEFAULT_SVGMARKER_SIZE)

• angle (float = DEFAULT_SVGMARKER_ANGLE)

• scaleMethod (Qgis.ScaleMethod = DEFAULT_SCALE_METHOD)

calculateAspectRatio(self, context: QgsSymbolRenderContext, scaledSize: float)

Calculates the marker aspect ratio between width and height.

Parameters:

• context (QgsSymbolRenderContext) – symbol render context

• scaledSize (float) -> (float) – size of symbol to render

• hasDataDefinedAspectRatio – will be set to True if marker has data defined aspectRatio

copyCommonProperties(self, other: QgsRasterMarkerSymbolLayer | None)

Copies common properties to another layer.

Added in version 3.26.

Parameters:

other (Optional[QgsRasterMarkerSymbolLayer])

static create(properties: Dict[str, Any] = {}) → QgsSymbolLayer | None

Creates a raster marker symbol layer from a string map of properties.

Parameters:

properties (Dict[str, Any] = {}) – QVariantMap properties object

Return type:

Optional[QgsSymbolLayer]

defaultAspectRatio(self) → float

Returns the default marker aspect ratio between width and height, 0 if not yet calculated.

See also

updateDefaultAspectRatio()

Return type:

float

fixedAspectRatio(self) → float

Returns the marker aspect ratio between width and height to be used in rendering, if the value set is lower or equal to 0 the aspect ratio will be preserved in rendering

See also

setFixedAspectRatio()

See also

QgsSvgCache

Return type:

float

opacity(self) → float

Returns the marker opacity.

Return type:

float

Returns:

opacity value between 0 (fully transparent) and 1 (fully opaque)

See also

setOpacity()

path(self) → str

Returns the marker raster image path.

See also

setPath()

Return type:

str

preservedAspectRatio(self) → bool

Returns the preserved aspect ratio value, True if fixed aspect ratio has been lower or equal to 0.

See also

setPreservedAspectRatio()

Return type:

bool

static resolvePaths(properties: Dict[str, Any], pathResolver: QgsPathResolver, saving: bool)

Turns relative paths in properties map to absolute when reading and vice versa when writing. Used internally when reading/writing symbols.

Parameters:

• properties (Dict[str, Any])

• pathResolver (QgsPathResolver)

• saving (bool)

setCommonProperties(self, properties: Dict[str, Any])

Sets common class properties from a properties map.

Added in version 3.26.

Parameters:

properties (Dict[str, Any])

setFixedAspectRatio(self, ratio: float)

Set the marker aspect ratio between width and height to be used in rendering, if the value set is lower or equal to 0 the aspect ratio will be preserved in rendering

Parameters:

ratio (float) – Fixed Aspect Ratio

See also

fixedAspectRatio()

See also

QgsSvgCache

setOpacity(self, opacity: float)

Set the marker opacity.

Parameters:

opacity (float) – opacity value between 0 (fully transparent) and 1 (fully opaque)

See also

opacity()

setPath(self, path: str | None)

Set the marker raster image path.

Parameters:

path (Optional[str]) – raster image path

See also

path()

setPreservedAspectRatio(self, par: bool) → bool

Set preserved the marker aspect ratio between width and height.

Parameters:

par (bool) – Preserved Aspect Ratio

Return type:

bool

Returns:

the preserved aspect ratio value, True if fixed aspect ratio has been lower or equal to 0

See also

preservedAspectRatio()

updateDefaultAspectRatio(self) → float

Calculates the default marker aspect ratio between width and height.

Return type:

float

Returns:

the default aspect ratio value

See also

defaultAspectRatio()