Re: [boost] Progress of Boost.SVG_Plot

From: Joaquín Mª López Muñoz (joaquin_at_[hidden])
Date: 2007-06-13 13:13:36

Paul A Bristow ha escrito:

> >-----Original Message-----
> >From: boost-bounces_at_[hidden]
> >[mailto:boost-bounces_at_[hidden]] On Behalf Of Jake Voytko
> >Sent: 13 June 2007 03:01
> >To: boost_at_[hidden]
> >Subject: [boost] Progress of Boost.SVG_Plot
> >
> >For those who have put time or energy into making suggestions for the
> >SVG_Plot program, an update (with pretty pictures!) is on the wiki:
> >http://svn.boost.org/trac/boost/wiki/soc/2007/VisualizationOfContainers
> >
> >Feedback / use cases welcome ;). So far it only produces graphs in one
> >dimension, but inch by inch it's getting better! Hopefully by
> >the halfway
> >point, I'll have a working legend system as well as graphs in two
> >dimensions, and I hope to take a good chunk out of the list of
> >suggestions
> >that I've been given! Further into the future, I want to look at the
> >animation / hover features that SVG has to offer to see if I can take
> >advantage of them for data display purposes and make the output of the
> >program awesome.
>
> Looking rather good already :-))
>
> Though I suspect that people will have a clearer idea of the implications of the parameters v. stream debate when we have a slightly
> fuller example with axes ticks and labels and title etc.  Perhaps when you have a bit more fleshed out, you can repost with a title
> like:
>
> "Progress of Boost.SVG_Plot - request for views on how to present the graph options."
>
> Personally, I still don't like the use of << at all.
>
> The set functions feel much more intuitive to me, and chaining
> provides a shortcut if you want, but you don't have to use it.

I think there's an advantage to the << interface that hasn't been mentioned
yet: << allows extensibility in the sense that further elements can be
seamlessly incorporated in the future without modifying svg_plot public
interface. For instance:

svg_plot& operator<<(svg_plot& p,const triangle& t)
{
  return  p<<line(...)<<line(...)<<line(...);
}

...

svg_plot my_plot;
my_plot<<triangle(...);

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo