Java package for drawing graphics ?

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Vlad - 08 Mar 2004 14:44 GMT

Hello,

I hope my following question is not too far from this forum's topic.

Do you know a free Java package that I could use to plot 2D graphics
from some text files (or something similar) ?

I have some performance data collected in text files; each column is a
certain parameter. I could use some scripts to format this text file
for the Java tool if necessary. I would like to be able to generate
graphics of one column parameter against another. Do you know sucha
Java package ?

Thank you,
Vlad Grama.

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Josef Garvi - 08 Mar 2004 15:11 GMT

> Do you know a free Java package that I could use to plot 2D graphics
> from some text files (or something similar) ?

Perhaps JFreeChart with a scatter graph?
http://www.jfree.org/jfreechart/index.html

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Josef Garvi

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Andrew Thompson - 08 Mar 2004 15:50 GMT

> Do you know a free Java package that I could use to plot 2D graphics
> from some text files (or something similar) ?

It depends what sort of graphics you
want to plot as to which is the best
way to go, for example, for charts you
could use
http://www.object-refinery.com/jfreechart/

But if you search Google for
'java graph free opensource' you get 36,300
hits, and if you accept Google's spelling suggestion
'java graph free open source' you get
275,000.

For 2D G that are _not_ graphs you might
have to do a search or alternately roll
your own using java.awt.Graphics2D

> I have some performance data collected in text files; each column is a
> certain parameter. I could use some scripts to format this text file
> for the Java tool if necessary.

Now, why would you go use anything
besides Java for formatting the data?

>..I would like to be able to generate
> graphics of one column parameter against another. Do you know sucha
> Java package ?

Sounding like JFreeChart would be a
good place to start.

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Andrew Thompson
* http://www.PhySci.org/ Open-source software suite
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Vlad - 09 Mar 2004 08:52 GMT

Thank you all for the replies.
JChart is just what I needed.

Vlad Grama.

> > Do you know a free Java package that I could use to plot 2D graphics
> > from some text files (or something similar) ?
[quoted text clipped - 28 lines]
> Sounding like JFreeChart would be a
> good place to start.

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Thomas Weidenfeller - 08 Mar 2004 16:07 GMT

> Do you know a free Java package that I could use to plot 2D graphics
> from some text files (or something similar) ?

<whisper>
Does it have to be in Java? If not, good old gnuplot might be what you
want: http://www.gnuplot.info/
</whisper>

/Thomas

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Java package for drawing graphics ?

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