[R-SIG-Finance] SVG device with tooltips

[Tony Plate]

Thanks for the feedback!  The SVG code appears to not work with IE on 
Windows.  I've had several reports (including from Gabor) that it does 
work with Firefox, on both GNU/Linux and Windows.  If anyone knows 
what's wrong and how to fix it so that it works with IE, I'd be happy to 
incorporate a fix (but it's not something I'm going to spend much time 
on myself).  AFAICS, it's not just a matter of including a DTD -- I 
tried that and it still wouldn't display in IE.

-- Tony



Gabor Grothendieck wrote:
> 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
>>
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>>
> 
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