Re: [Fenfire-dev] RDF views in a web-server application

[Matti Katila]

Hi Damaris,

Thanks for specifying the buble word :-) I read some articles about AJAX
and got the picture of it.

Some questions:
- How many levels of connections are you thinking to show?
- Would there be any interaction with the graph or just rendering?

Some basic answers:
- You need to modify the document/DOM with Ecmascript in such a way that
  graph is shown while howering on a word link. This can be done at least
  in two ways: hiding data before the mouse pointer is on a link, or
  receiving the data from server when you point on a link. I would prefer
  the first option, even then it's not so AJAX.

- You can try something with html table to do the layouting. For example,
  see
http://himalia.it.jyu.fi/darcs/project/teaching/TIE363/www/lectures/lecture4/
  and the table in the section 'b:The public Fenfire (10-15 minutes)'.
  When you use some kind of bubble image on cell background the effect
  may be what you want. You may need to draw on paper what you want to
  render and then ask yorself whether it's possible to do with html/css.


   -Matti

On Wed, 10 May 2006, Damaris Fuentes wrote:
> Ups, I'm reallly sorry Matti, I made a typo :S. I wanted to say
> "bubble", referring to the nodes (the circles), in the RDF. I am working
> in a project where you have words that can be RDF annotated (in a
> semantic wiki), and I want to show this annotations qhen the user places
> the mouse over the word precisely as you show the RDF elements in
> Fenfire.
>
> The only thing I have found, more or less, is at
> http://web-graphics.com/mtarchive/BubbleTooltips.html
> but of course is not the same. It just makes one kind of "bubble", and
> I wanted to know if I could do more or less what you have in Fenfire but
> just with javascript (or AJAX) and css (without Flash or something like
> that).
>
>   Thank you really much.
>
> Matti Katila <address@hidden> escribió:
>   On Wed, 10 May 2006, Damaris Fuentes wrote:
> > Hi you all!
> >
> > I came across with your Fenfire project. I am delighted with the view
> > of the RDF "boobles" like a real graph. I am right now in a web project
> > with Ruby on Rails where, with basic HTML and javascript or AJAX I must
> > do this kind of boobles. Anyone can give me any idea?
>
> Hi Damaris,
>
> Thanks for writing to us. First, I tried Merriam-Webster and Google to
> find the word "boobles" but I failed. Hence, I'm not 100% sure what you
> mean with your question but I try to answer as I have understood it.
> Please, try again if you don't find my answer clear as crystal.
>
> As I understand it, your goal is to generate web page which has some user
> interaction and shows an RDF graph with nodes or "boobles". The basic
> concept of this kind of general graph view is to show:
> 1) subjects, objects and literals as boxes with some content, e.g., a
> string or picture; and
> 2) predicates as connections between boxes, e.g., a colored line with
> predicate name.
>
> There are some issues how literals are shown because of they lack of an
> identity but it's just an implementation issue. If you want to use
> animations while hopping from node to node we use a keys of node
> identities to mark coordinating systems.
>
> Well, I must admit that I don't know AJAX enought to give you much
> information how the drawing mechanism is to be implemented. I would
> suggest that you need to use css and fixed coordinates to draw the boxes
> for instance. I have seen this demo, http://demo.nextapp.com/Demo/app
> and I was very impressed. What I would like to have is a graphics API port
> of Libvob - our visualization library - to AJAX. That would be something
> very cool.
>
> Anyway, I hope you get some points to ask more specified questions :-)
>
>
> -Matti
>
>
>
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