The time step and frame rate was not set correctly. It is done.  
It will be better if you can provide a jpg/gif file which show direction for B,x,y (lower left corner)
Then, I will replace it.

Click the eye (image) to display the simulation

/htdocs/ntnujava/ejsuser/2/users/ntnu/fkh/changeGaussianField8_pkg/changeGaussianField8.propertiesFull screen applet or Problem viewing java?Add to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(1073.8kB):double click downloaded file to run it. (2 times by 1 users) , Download EJS source View EJS source