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ODE Software for MATLAB |
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ODE Software for MATLAB |
The programs DFIELD and PPLANE are described
in some detail in the manual Ordinary Differential
Equations using MATLAB. There are several versions of the
software available
for use with various editions of MATLAB.
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 delivery of the software via the world wide web
is probably the easiest for users to employ.
The disadvantage is that no record is kept of the downloads. It would
be greatly appreciated if you would contact John C. Polking,
and tell him how you are using DFIELD and
PPLANE, what level of course you are teaching, how
many students you have, and
what you think of the programs. If you acknowledge your use of the
programs in this way you will be informed as new versions are
released. Since changes are made as bugs are discovered and
corrected and as good, new ideas are implemented, this will occur a
few times each year.
To download what you need, simply shift-click on the appropriate links below.
DFIELD and PPLANE have been completely
reworked to take advantages of the much improved programming
capabilities of version 5 of MATLAB. There are a number of new
features. A description is available.Three files are needed:
Four files are needed:
Four files are needed:
dfield was called df35 and
pplane was called phpl35 in those days.Five files are needed: