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I want to create some svg symbols for Qgis using Inkscape, those symbols must have attributes as described in the question. For the last two days, I have been experimenting as instructed by Sourcepole and mimicked some symbols came bundled with qgis that have desired attributes without any success.

Finally I experimented with the simplest form of symbol: I created an svg that contains only a circle in Inkscape and tried to modify it.

The original file (circle.svg) have this line:

<path
   sodipodi:type="arc"
   style="fill:#ffffff;fill-opacity:1;stroke:#000000;stroke-width:1.01988637;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"

I modified it into:

<path
   sodipodi:type="arc"
   style="fill:param(fill) #ffffff;fill-opacity:1;stroke:param(outline) #000000;stroke-width:param(stroke-width) 1.01988637;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"

Saved as circle_modified.svg and selected it as point symbol, but Qgis couldn't change all three parameters at the same time.

What did I do wrong or should do differently?

My system: Qgis 1.8.0 on Ubuntu 12.04 64 bit, Inkscape 0.48, Gedit 3.4.1 text editor.

Thanks.

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1 Answer

To create SVG symbols with modifiable fill color, stroke color and stroke width in QGIS, you should replace the style attribute from the path element with these 3 attributes:

  • fill="param(fill) #FFF"
  • stroke="param(outline) #000"
  • stroke-width="param(outline-width) 1"

If you are using InkScape, after writing the new SVG file, edit the file and replace the entire line beggining with style:

style="fill:#00a000;fill-opacity:1;stroke:#000000;stroke-width:1;(...)"

with the following line:

fill="param(fill) #FFF" stroke="param(outline) #000" stroke-width="param(outline-width) 1"
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