[t] Java Plotting

I tried to use java for mote signal plotting and it was successful. The plotting package I used is called Graph Class Library. Setting up Jbuilder took me quite some time, till now there are still problems to import tinyos packages.
Inspite of the cumbusomeness Jbuilder has, it is definitely a friendly and powerful development environment. The autocompletion and error checking are gorgeous.
No matter what language you are using: VC, VB or Java (could be python:P), the backstage schemes are the same: 1) prepare a buffer to store the plotting data, 2) update the buffer tail to make reflexion of time, 3) replot.
All three steps have the opportunity of improvment, in case signal comes in a high frequency. for step 1, a ring buffer or dynamic array can be used to avoid moving data in step 2; for step 2, update can be done in batch mode, or on a fixed inteval basis; for step 3, replotting can be done on part of the whole window area, or other window clipping techniques can be used.

[edit on 05/16]
The moteiv people keep warning a clean cygwin installation is a must: that's of reason. I found out that the tinyos java package path problem is actually caused by the cygwin installation. After doing a complete reinstall, problems solved.