Karlsruhe says Hi. :)
Good point, Yaron. SMW sure should not be dependant on an external
service -- that is why the Google Charts API visualization is switched
off by default. But you are right -- it should actually be an extension
of itself, and removed from the SMW code entirely again. As soon as I
have the time -- or if someone takes it up -- it should be done.
Regarding 3rd party libraries to replace Google's service:
* JpGraph, unfortunately, is not Open Source
* MovGP0 suggested to take a look at gnuplot, which is extremely
powerful, stable, well maintained, etc. It is just a pity their demo
plots also don't look too nice (maybe there are options for nicer fonts
and anti-aliasing?). And it would be a binary extension -- gnuplot is
written in C (which makes installations in some settings more
complicated), but otherwise it seems workable.
* ploticus seems to be an alternative as well. But it seems to be pretty
similar to gnuplot, so I could not decide between the two (they both
look similarly pretty...)
Oh, and there was a mistake in the installation description. It should
It is updated on the wiki
Yaron Koren wrote:
> Brooklyn says hi. :) Let me say that even this simple demonstration of
> charts looks amazing - this really brings up a lot of possibilities.
> However, I think it's a bad idea to include this code directly in SMW.
> The Google Charts service is free, but it's not open source, which means
> that (a) they could start charging for it at any time, and (b) the whole
> project now becomes reliant on this URL staying up. Even if neither of
> those ever become a real issue, there may be companies and organizations
> that have a strict open-source policy for the applications they use, and
> SMW would now violate those. I think this code is much better off
> getting packaged as a "Semantic Google Charts" extension, using the same
> hooking-into-the-ask-query approach that Semantic Google Maps now takes.
> I don't know if I should be the one to do that (I guess we can talk
> about that). But if that happens, it still would be nice to have an
> open-source graphing library directly within SMW - that JpGraph library
> looks like a good one, although the graphs it creates look ugly as sin
> compared to Google's - maybe that can be changed.
> On Tue, Jul 8, 2008 at 10:15 AM, Krabina Bernhard <email@example.com
> <mailto:Semediawikifirstname.lastname@example.org>> <mailto:email@example.com>> wrote:
> > Now this may be the fastest granted wished feature ever :)
> wow! I'm impressed! I will definitely give it a try.
> > I do not expect to have much time to explore this further,
> > even though it would be very cool to choose colours and to
> > add more info, and to use more of the chart types that Google
> > offers. It would be even cooler if someone could find an Open
> > Source library that can create these charts itself (didn't
> > find something when browsing shortly), so that the data does
> > not have to be sent to Google, and so that we can expand it
> > more easily, and make it a proper self contained part of SMW.
> > So if you want to take over development here, feel free to do
> > so! We probably will not clash when doing it (but you may
> > drop a note on the dev list before you do something bigger so
> > that we prevent double work).
> The problem is that I'm no PHP developer. So I can add something here or
> there and provide translations, but I have not the skills to take over a
> But I know someone who is doing a great job in taking over other's
> abandoned projects ;-)
> [hint] greetings to brooklyn [/hint]
> Regarding library, maybe http://www.aditus.nu/jpgraph/ is worth
> > Krabina Bernhard wrote:
> > > Dear SMW developers,
> > >
> > > in the German speaking magazin c't I read an interesting article on
> > > the Google Charts API: http://code.google.com/apis/chart/
> > >
> > > Would't it be nice to see a SemanticGoogleCharts-Extension
> > where Data
> > > of a Semantic Mediawiki can be displayed using the Google API?
> > >
> > > (Or maybe use this one: http://code.google.com/apis/visualization?)
> > >
> > > Come on, PHP-cats show me what you can do ;-)
> > >
> > > cheers,
> > > Bernhard
> > >
> > >
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