LineSymbolizer¶
The LineSymbolizer styles lines. Lines are one-dimensional geometry elements that contain position and length. Lines can be comprised of multiple line segments.
Syntax¶
The outermost tag is the <Stroke> tag. This tag is required, and determines the visualization of the line. There are three possible tags that can be included inside the <Stroke> tag.
| Tag | Required? | Description |
| <GraphicFill> | No | Renders the pixels of the line with a repeated pattern. |
| <GraphicStroke> | No | Renders the line with a repeated linear graphic. |
| <CssParameter> | No | Determines the stroke styling parameters. |
When using the <GraphicStroke> and <GraphicFill> tags, it is required to insert the <Graphic> tag inside them. The syntax for this tag is identical to that mentioned in the PointSymbolizer section above.
Within the <CssParameter> tag, there are also additional parameters that go inside the actual tag:
| Parameter | Required? | Description |
| name="stroke" | No | Specifies the solid color given to the line, in the form #RRGGBB. Default is black (#000000). |
| name="stroke-width" | No | Specifies the width of the line in pixels. Default is 1. |
| name="stroke-opacity" | No | Specifies the opacity (transparency) of the line. possible values are between 0 (completely transparent) and 1 (completely opaque). Default is 1. |
| name="stroke-linejoin" | No | Determines how lines are rendered at intersections of line segments. Possible values are mitre (sharp corner), round (rounded corner), and bevel (diagonal corner). Default is mitre. |
| name="stroke-linecap" | No | Determines how lines are rendered at ends of line segments. Possible values are butt (sharp square edge), round (rounded edge), and square (slightly elongated square edge). Default is butt. |
| name="stroke-dasharray" | No | Encodes a dash pattern as a series of numbers separated by spaces. Odd-indexed numbers (first, third, etc) determine the length in pxiels to draw the line, and even-indexed numbers (second, fourth, etc) determine the length in pixels to blank out the line. Default is an unbroken line. Starting from version 2.1 dash arrays can be combined with graphic strokes to generate complex line styles with alternating symbols or a mix of lines and symbols. |
| name="stroke-dashoffset" | No | Specifies the distance in pixels into the dasharray pattern at which to start drawing. Default is 0. |
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