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Text File  |  1999-09-16  |  299b  |  13 lines
  1. // demo of macros portrait & fchamp
  2. //  limit circle
  3.  
  4. xbasc();
  5. part1()
  6. // phase portrait : dimension 2
  7. portrait(cycllim,'default',[-2,-2,2,2],[500,0.1],'f',[0,1;0.5,2]);
  8. // field dynamic system
  9. fchamp(cycllim,0,-2:0.2:2,-2:0.2:2,0)
  10.  
  11. //interactive 
  12. portrait(cycllim,'default',[-2,-2,2,2],[100,0.1]);
  13.