fd_predator_prey_test

fd_predator_prey_test, a Fortran77 code which calls fd_predator_prey(), which applies the finite difference method (FDM) to estimate solutions of a pair of ordinary differential equations that model the behavior of a pair of predator and prey populations.

Licensing:

The information on this web page is distributed under the MIT license.

Related Data and Programs:

fd_predator_prey, a Fortran77 code which applies the finite difference method (FDM) to estimate solutions of a pair of ordinary differential equations that model the behavior of a pair of predator and prey populations.

Source Code:

• fd_predator_prey_test.sh, runs all the tests.
• fd_predator_prey_test.txt, the output file.

TRF_100 uses 100 timesteps, which are not enough.

• trf_100.txt, the data.
• trf_100.png, a plot.

TRF_1000 uses 1000 timesteps; the solution does not explode, and seems to show periodicity, except that it is clearly growing.

• trf_1000.txt, a table of the prey and predator values using 1000 steps.
• trf_1000.png, a plot.

TRF_10000 uses 10000 timesteps. The cyclic nature of the solution is clear.

• trf_10000.txt, a table of the prey and predator values using 10000 steps.
• trf_10000.png, a plot.