Marker Symbolizer

Marker Symbolizer

The Simple Marker symbolizer draws a predefined shape with customizable fill and outline. This is default symbolizer for 0-dimensional geometries (points). 

Supported shapes are:

	Circle			Star
	Square			Cross
	Triangle			X

Supported styling options:

Property	Description
ShapeType	Specifies the shape of the marker.
Size	Specifies the size of the marker shape
FillColor	Specifies the color and transparency given to the fill
StrokeColor	Specifies the color and transparency given to the line
StrokeWidth	Specifies the width of the line
StrokeLineJoin	Determines how lines are rendered at intersections of line segments.
StrokeStyle	Specifies how the symbol linework should be drawn.
StrokeDashPattern	Specifies an array of distances that specifies the lengths of alternating dashes and spaces in dashed lines.
StrokeDashOffset	Specifies the distance from the start of a line to the beginning of a dash pattern.
Rotation	Specifies the rotation of the symbol about its center point, in decimal degrees. Positive values indicate rotation in the clockwise direction, negative values indicate counter-clockwise rotation. Default is 0.
HorizontalOffset	Specifies horizontal offset from a point location  to the shape anchor point.
VerticalOffset	Specifies vertical offset from a point location to the shape anchor point.
HorizontalAnchorPoint	Specifies which side of a marker shape will be aligned horizontally with the point location.
VerticalAnchorPoint	Specifies which side of a marker shape will be aligned vertically with the point location.

Geometry Types

 The symbolizer can be applied to geometries of any type.

Geometry Dimension	Geometry Types	Rendering Behavior
Point	Point, MultiPoint	Draws the shape centered at the point coordinate.
Line	LineString, CircularString, CompoundCurve, LinerRing, MultiCurve, MultiLineString	Draws the shape centered at the centroid of the geometry
Surface	Polygon, CurvePolygon, MultiPolygon, MultiSurface

For GeometryCollections, the rendering behavior is determined separately for each geometry inside the collection. Layers with Mixed geometry type follow the logic for GeometryCollections.

Use MixedGeometrySymbolizer to limit a symbolizer to specific geometry types.

Examples

By default the marker symbolizer draws black circles:

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Here’s how to change fill color to red:

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Another example of styling with a predefined shape (triangle):

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For more advanced scenarios, you might want to adjust the marker style dynamically based on feature attribute values. Here’s how to do that:

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You might also want to add labels to your markers. Visit Points Labeling Examples for examples.