[ jcharts-Feature Requests-956026 ] Regression Charts

Feature Requests item #956026, was opened at 2004-05-18 11:56
Message generated for change (Comment added) made by nathaniel_auvil
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=366161&aid=956026&group_id=16161

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Zorkerman (zorkerman)
Assigned to: Nathaniel G. Auvil (nathaniel_auvil)
Summary: Regression Charts

Initial Comment:
Have you considered adding regression charting?  This
would need the options of showing a linear regression
line, as well as optionally showing the points that
make up the line.  

I imagine that if you got really energetic you could
use some exponential regression stuff.  

This would pretty much facilitate me throwing kavachart
away.

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>Comment By: Nathaniel G. Auvil (nathaniel_auvil)
Date: 2004-08-09 10:24

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ok cool.

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Comment By: Zorkerman (zorkerman)
Date: 2004-08-05 09:12

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some linkes:
http://davidmlane.com/hyperstat/A115370.html

http://www.google.com/search?sourceid=mozclient&ie=utf-
8&oe=utf-8&q=regression+line

this is an applet that'll get you a good feel of a regression 
line:
http://www.stat.uiuc.edu/courses/stat100//java/guess/PPApp
let.html

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Comment By: Zorkerman (zorkerman)
Date: 2004-05-31 18:00

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Here is what I sent to the jcharts develop mailing list:

to rid my life kavachart I needed a regression chart.  Well, I 
got impatient and put a little hackneyed thing together.  Here 
are the files that I have changed.

Chart type gets a new type RegressionChart.
AxisChart gets a new instantiator in the ifdom that picks 
charts.
And finally there's the RegressionChart.java

I kind of changed the object model around a bit for the 
regression chart since I had occation to use more than just 
one function.  Also, it made my life easier to have some 
member data, so AxisChart instantiates a new 
RegressionChart at every request.  Also, if the regression line 
goes under the bottom of the graph, it will not yet expand 
the graph downward.   Oh yeah, and there's some big honkin 
comments left sittin' around.

I have only used this in one very specialized case so there's 
probably plenty to do to make it better, but it's pretty nice 
way to start off.

Oh and I kinda took some of my ideas from this website: 
http://www.math.csusb.edu/faculty/stanton/m262/regress/re
gress.html  so we may need to see how nice a person 
stanton is, since he didn't mention any licensing on the 
website it's not really clear.


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Comment By: Nathaniel G. Auvil (nathaniel_auvil)
Date: 2004-05-31 14:49

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I am not sure off the top of my head what a regression chart
is. Can you point me at some examples?

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