[R-SIG-Finance] SVG device with tooltips

[Gabor Grothendieck]

When I click on the three svg files in IE7 on Windows XP I get the xml
source code, not a graphic.  If go to Adobe's site I do get SVG graphics
for their examples.  I have Adobe's SVG addin installed.

On 2/15/07, Tony Plate <tplate at acm.org> wrote:
> I put experimental SVG device package, which includes the ability to
> have popup tooltips, at
>
> http://www.cybermesa.com/~champagne/RSVGwTips/RSVGwTipsDevice_0.6.1.tar.gz
> (source)
> http://www.cybermesa.com/~champagne/RSVGwTips/RSVGwTipsDevice_0.6.1.zip
> (windows binary package)
>
> Examples of the plots produced are at:
>
> http://www.cybermesa.com/~champagne/RSVGwTips/svgplot1.svg
> http://www.cybermesa.com/~champagne/RSVGwTips/svgplot2.svg
> http://www.cybermesa.com/~champagne/RSVGwTips/svgplot3.svg
>
> (These are the first 3 examples produced by the code in the help file --
> I've just put them here so that people can see the SVG output without
> having to get, compile and install the package.)
>
> This SVG device is called RSVGwTipsDevice, and is based on the
> RSvgDevice package written by T Jake Luciani <jakeluciani at yahoo.com>
> (who did express mild interest in these modifications, but didn't have
> time to look at them or comment on them.)
>
> Limitations/features are:
>
> * standard graphics primitives are used (points(), rect(), etc), and the
>  same code should work with any device (for other devices, the calls
> that specify tooltips should have no effect.)
> * tooltips are attached to shapes: e.g., the output of points(), rect(),
> and polygon(), but not lines()
> * the tooltip is specified in a separate call to the drawing function
> * only the first shape produced by an R drawing function will have a
> tooltip (so, if you want each point to have a tooltip, each must be
> drawn separately)
> * the tooltips that have a title + 2 lines of text probably use
> non-standard SVG code -- I wrote the SVG code by trial and error and
> it's probably not correct.  These tooltips display fine in Firefox, but
> the Batik standalone SVG viewer doesn't like them.
>
> One possible approach to get around the limitation that vectorized calls
> to points() (etc) only have a tooltip on the first point is to allow
> specifying in advance a vector of tooltip text.  However, the whole
> approach of having to supply the tooltip text in advance is not very
> nice -- though it was the only way I could think of making the standard
> graphics primitives work with tooltips (because the standard graphics
> primitives don't allow optional extra arguments).
>
> If you try this out, please bear in mind that this really is
> experimental code.  Comments/suggestions/contributions are welcome
> (especially from SVG experts!)
>
> It's probably reasonably easy to add other dynamic graphics features
> such as zooming and x/y location readout.  I just haven't tried, but if
> anyone is inspired and comes up with something, I'm happy to try to
> integrate it!
>
> -- Tony Plate
>
> _______________________________________________
> R-SIG-Finance at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-sig-finance
>