Hi Stephen,
There are charting apps based on SVG that work directly in a
web-browser.
Examples are:
* highcharts: http://www.highcharts.com/ (commercial/opensource)
* Google charts: http://code.google.com/intl/de-DE/apis/chart/ (some
Google license)
* http://mbostock.github.com/d3/: not so simple but very powerful -
more than just charts. (BSD license)
I believe that all of these are browser-based and I doubt they work
without modifications in Batik directly.
Maybe the above links can help, even if they are more browser-oriented
and less java/Batik related.
Andreas
On Mon, 14 Nov 2011 16:28:37 +1100, Steve Cameron wrote:
Hello,
I have inherited a Java application that uses batik to create XY
scatter charts. There are some things that
I'd like to improve and I am thinking of swapping it over to make use
of JFreeCharts, which provides what I want pretty easily.
However, I am interested in SVG in general and am wondering if there
are others who have implemented a chart library/tool based on batik?
I'd like to add zooming capability, which of course SVG provides but
for charts there is the need to maintain the x and y axes in view at
the same time as you zoom in on the data. I'm sure this can be done
by
applying separate transforms to the data region and separate x and y
axis regions, but that functionality is already available in
JFreeCharts.
Another issue is displaying a large number of points dynamically (I
swap the data set), is there a way to speed this up in dynamic SVG by
preventing the screen from repainting until all old points have been
removed and new ones added (or is this a foreign concept in SVG)?
I suspect that most Java based 2d charts use the java.awt.Graphics2D
class for the User Interface for performance reasons and render to
SVG
using batik as an option. I'm wondering about the pro's and con's of
this approach, versus doing it all in SVG?
On advantage I can think of is that you could maintain a common set
of
code for a web-based and a Java-based interactive charts library.
I hope that someone can point me in the right direction.
Thanks
Stephen Cameron
Antarctic Fisheries Computing and Database Support Provider
Australian Antarctic Division
Kingston, Tasmania
Phone: 03 62323571
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