dfield and pplane are copyrighted in the name of John C. Polking, Department of Mathematics, Rice University. They are not in the public domain. However, they are being made available free for use in educational institutions. This offer does not extend to any application that is made for profit. Users who have such applications in mind should contact John C. Polking. The Java versions were written by Joel Castellanos in collaboration with John C. Polking.
dfield (Direction Field) Java Software Download:
dfield.jar Click to download and save dfield.jar. After downloading, find the directory where you saved dfield.jar and double-click on the downloaded file. Alternatively, run dfield from the commend line with the command: java -jar dfield.jar. Note: running this software requires the Java Runtime Environment 1.6 or newer.
pplane (Phase Plane) Java Software Download:
pplane.jar Click to download and save pplane.jar. After downloading, find the directory where you saved pplane.jar and double-click on the downloaded file. Alternatively, run pplane from the commend line with the command: java -jar pplane.jar Note: running this software requires the Java Runtime Environment 1.6 or newer.
Java Applets (for download)
Note: This page is mirrored from this source page: https://www.cs.unm.edu/~joel/dfield/