Plot2DPanel.addLinePlot plots double[] x, double[] y plots differently depending on length of array

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Plot2DPanel.addLinePlot("", new double[]{1,2,3}, new double[] {4,5,6})
2. Plot2DPanel.addLinePlot("", new double[]{1,2}, new double[] {4,5})
3.

What is the expected output? What do you see instead?
according to the arguments (String, double[] X, double[] Y), #1 should be 
plotting the follow data points(1,4), (2,5), (3,6) and #2 should plot (1,4) and 
(2,5).

This does not happen for #2. #2 plots (1,2) and (4,5).


What version of the product are you using? On what operating system?
8/2009 download, XP

Please provide any additional information below.

Original issue reported on code.google.com by edhsieh1...@gmail.com on 1 Apr 2011 at 7:46

[GoogleCodeExporter]

I've also seen this problem when adding multiple line plots to 2D and also 3D 
every now and then.  I'm trying to track down the issue that causes it.  

Currently I would guess it's when the X and Y arrays have only 2 elements.

Original comment by marcus.r...@gmail.com on 13 Sep 2011 at 7:56

[GoogleCodeExporter]

I believe the problem is here: Plot2DCanvas.convertXY(double[]...XY)

Even though someone clearly coded this intentionally, I think this should be 
removed. It's not documented, and it's not consistent.

Original comment by edhsieh1...@gmail.com on 5 Oct 2011 at 7:22

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I had also this problem when I was trying to add multiple line plots. I 
experimented a lot with this bug and it only emerges in 2X2 arrays.

Original comment by stavrosi...@gmail.com on 16 Mar 2012 at 5:04

[GoogleCodeExporter]

Great, I just wasted an entire day trying to trying to figure out why my 
plots/derivations where messed up...

It is indeed because I was throwing 2x2 arrays at addScatterPlot()...

I'd suggest raising the priority level of this issue as plotting a pair of 
points is a rather common elementary test.

Unfortunately, this broke my trust in jmathplot...

Original comment by yse...@gmail.com on 9 Oct 2013 at 2:17

[niddhogg]

Hey guys, this is indeed a bug, and it's shame such important bug is not fixed yet.
We found a workaround for now to use 2x3 instead of 2x2.
How to do this? Just by duplicating end of line point - it simply works.