Re: svg : gnuplot_plot_1

[Ethan A M. <sf...@us...>]

On Wednesday, October 19, 2011 03:57:09 pm pl...@pi... wrote:
> > Since I raised the topic , there are two things there the id and the
> > title, name gets used for both.
> >
> > Clearly id cannot have spaces so attempting a name with a space throws
> > an error, though
> > " line 133: illegal javascript variable name" is a bit cryptic unless
> > one is familiar with the mechanics of svg.

Well, it really is the javascript that cares, not the svg.
But feel free to suggest a more helpful error message.

> > A title with underscores, though legible, is not too pretty. Would it be
> > better to substitute spaces with underscores internally when composing
> > the id and allow spaces in name, and hence the visible title?

Sorry, I don't understand what you are suggesting there.  What do you mean
by the "visible" title?  Visible to whom?  Using what tool?

> PS I've just noticed that even when I do specify a name , the svg title 
> still gets "plot_1" appended to the name I specified.
> 
> Is this necessary in some way , or is it an oversight?

It is absolutely necessary.  That is how the document distinguishes which
elements belong to plot 1, which to plot 2, and so on.  That way it is
possible to globally toggle properties of one plot without affecting the
others.  These, by the way, are multiple plots within the same graph.
If there are multiple graphs in the document, then we have globally
accessible handles for
   name1_plot_1 ... name1_plot_N
   name2_plot_1 ... name2_plot_M
and so on.

Note that someone requested a more complex namespace
 https://sourceforge.net/tracker/?func=detail&aid=3205221&group_id=2055&atid=352055
and Christoph Bersch put together a patch that may or may not satisfy 
the request.  Neither Christoph nor I am sufficiently knowledgeable about
svg to judge whether the request is reasonable and whether the patch
implements it correctly.   Please help us by adding your thoughts, if you can.

	Ethan