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List:       graphviz-interest
Subject:    Re: [graphviz-interest] How to optimally rotate edge labels?
From:       "Yury V. Zaytsev" <yury () shurup ! com>
Date:       2009-05-21 12:02:17
Message-ID: 1242907337.6706.18.camel () mypride
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Dear Peter,

On Wed, 2009-05-20 at 08:33 +0200, Peter Both wrote:
>  
> At my side this resulted in a more compact drawing. If I look at your
> dot files, it maybe could also help in your case.

Yes, leaving out one parameter from my labels and inserting a line break
between the other two will probably help a quite bit to get a more
compact layout. Thanks for sharing this idea!

> Maybe a suggestion for the future development of graphviz (if possible
> off course). It would also be very nice if it would be possible to
> draw the edge labels along the same angle as the corresponding edge
> lines. This would also result in more compact drawings.

I definitively agree with you, that would be a very nice addition to
Graphviz, but that depends on whether Graphviz developers have time and
interest in implementing such an idea. 

I have already seen the implementation of this algorithm in some of the
technical drawing programs like Dia or Visio or whatever it was... and
it looked so much more intelligible and aesthetically pleasing!

Regards, 
 
-- 
Sincerely yours,
Yury V. Zaytsev

> 2009/5/19 Yury V. Zaytsev <yury@shurup.com>
>         Dear colleagues,
>         
>         I discovered Graphviz a while ago and now trying to visualize
>         my tables of relationship between objects. The question I came
>         up with is how I would tell Graphviz to rotate edge labels
>         whenever it is possible to obtain a maximally compact layout?
>         
>         I've been using it for quite some time to generate nice plain
>         graphs, but now I would like to add the most essential extra
>         information directly to the graph, so that the users won't
>         have to look up in the tables what the properties of the
>         specific connections are. To that end I've added the edge
>         labels (see test2.dot) to the plain graph (see test1.dot) and
>         it resulted in a very large and encumbered layout (test.svg).
>         Still, it looks like there is a lot of room for improvement if
>         one starts rotating the labels (red labels were rotated
>         manually in Inkscape). Is it somehow possible to do this
>         automatically?
>         
>         If this is not possible, maybe someone could give me a piece
>         of advice on how I would optimally add this info to the graph
>         without making it large and difficult to read?
>         
>         Thanks!
>         
>         --
>         Sincerely yours,
>         Yury V. Zaytsev
>         
>         _______________________________________________
>         graphviz-interest@research.att.com
>         https://mailman.research.att.com/mailman/listinfo/graphviz-interest
>         
> 
> _______________________________________________
> graphviz-interest@research.att.com
> https://mailman.research.att.com/mailman/listinfo/graphviz-interest


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