This is a demonstration version of the program topopatric that
runs on Windows. 

To run it you need to upload all three files:

topopatric-demo.exe
input-demo.txt
seed.txt

The file input-demo.txt can be edited and the parameters
changed. For example, change Q to 0.3 and D to 0.1.

Species are plotted in different colors, which start to repeat 
if more than 20 species are generated. Space has periodic 
boundary conditions. 


See our paper

Global patterns of speciation and diversity
M. A. M. de Aguiar, M. Baranger, E. M. Baptestini, L. Kaufman and Y. Bar-Yam 
Nature 460 (2009) 384  

for more details.


Marcus A.M. de Aguiar
Yaneer Bar-Yam
18-August-2010.