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Re: [Fwd: Re: RDF Validator moved to new server - graph issues gone]

From: Uldis Bojars <captsolo@gmail.com>
Date: Fri, 24 Nov 2006 17:15:56 +0000
Message-ID: <64c81f720611240915x7e7ddd87k407635ec5384b693@mail.gmail.com>
To: danbri@danbri.org
Cc: semantic-web@w3.org, ot@w3.org
Is it still located at the same URL - http://www.w3.org/RDF/Validator/ ?

When trying it now (with the RDF/XML snippet quoted in the original
mail) the validator returns an error message instead of a graph:
" The graph image file is empty. "

A graph is not generated and the same message is returned regardless
of the image format option chosen (PNG, GIF, SVG, ...).

Uldis

[ http://captsolo.net/info/ ]

On 11/24/06, Dan Brickley <danbri@danbri.org> wrote:
>
> I know a lot of people here care about the RDF Validator, so ... passing
> on some good news: some progress with non-latin scripts in the output
> graphs. Sounds like this is as good as it'll get without improvements in
> the underlying (ie. non-W3C) GraphViz system and its supporting libraries.
>
> Thanks, Olivier & co :)
>
> cheers,
>
> Dan
>
>
>
> ---------- Forwarded message ----------
> From: olivier Thereaux <ot@w3.org>
> To: Martin Duerst <duerst@it.aoyama.ac.jp>
> Date: Wed, 22 Nov 2006 15:41:25 +0900
> Subject: Re: RDF Validator moved to new server - graph issues gone
>
> Hello Martin, All.
>
> On Sep 20, 2006, at 21:54 , Martin Duerst wrote:
> > Great to see the basic graph problem fixed. But non-Latin-1
> > characters (e.g. Japanese) still seem to work in SVG,
> > but not in PNG or GIF.
>
> I am happy to report progress on this.
> We have managed to make the graphing tool use a font covering a very
> hight number of scripts.
>
> RDF such as:
>
> <?xml version="1.0"?>
> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>    xmlns="http://example.org/foo">
>    <rdf:Description rdf:about="http://www.w3.org/">
>      <contains>ascii 漢字 цириллик Ërôpéàñ
> ελαδδα ฉันก</contains>
>    </rdf:Description>
> </rdf:RDF>
>
> Will now get nicely displayed.
>
> We can not guarantee that all possible glyphs will be displayed
> properly. Unfortunately, the raster output for graphviz uses a
> library which uses only one font (instead, as some more advanced
> systems do, of trying other fonts which may contain the glyph if the
> current font does not), and as far as our research has shown, there
> is no such thing as a (free, truetype) font covering the whole of
> unicode.
>
> More info on the issue:
> http://www.graphviz.org/doc/FAQ.html#Q10a
>
> Thank you,
> --
> olivier
>
>
>
Received on Friday, 24 November 2006 17:16:20 GMT

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