[Mediawiki-l] SVG Thumbnail errors

[Henry Hartley]

On 10/27/2010 5:20 PM, Caitlin Dempsey wrote:
> I'm using ImageMagick to render SVG images on my wiki but some of the
> thumbnails have problems with them.  For exampled this SVG image has
> some pixels in the upper left hand corner that shouldn't be there:
> http://thecatholicguide.com/wiki/File:Arms_of_Basilica.svg
>
> My wiki is hosted so my only image converting option is ImageMagick.
> Is there anything I can do to get better thumbnails?

I'm afraid I can't tell you what to do in general but I can say that in 
the case of the graphic linked to above, it's the star polygon that's 
the issue. Note that I don't see the polygon at all when I view the file 
in Inkscape but ImageMagick *tries* to render it and seems to me to have 
it in the right place (around the origin) but gets a little confused, 
apparently. Here is a much reduced version of your file which exhibits 
the reported behavior.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->
<svg
    xmlns:svg="http://www.w3.org/2000/svg"
    xmlns="http://www.w3.org/2000/svg"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    version="1.0"
    width="448.79001"
    height="600.44"
    id="svg2">
     <polygon
        points="
	   	0,-1
		0.58778525,0.80901699
		-0.95105652,-0.30901699
		0.95105652,-0.30901699
		-0.58778525,0.80901699
		0,-1 "
        transform="scale(53,53)"
        id="star" />
</svg>

-- 
Henry