rossler2.m

biomedical stuffs...

function [ret,x0,str,ts,xts]=rossler2(t,x,u,flag);
%ROSSLER2	is the M-file description of the SIMULINK system named ROSSLER2.
%	The block-diagram can be displayed by typing: ROSSLER2.
%
%	SYS=ROSSLER2(T,X,U,FLAG) returns depending on FLAG certain
%	system values given time point, T, current state vector, X,
%	and input vector, U.
%	FLAG is used to indicate the type of output to be returned in SYS.
%
%	Setting FLAG=1 causes ROSSLER2 to return state derivatives, FLAG=2
%	discrete states, FLAG=3 system outputs and FLAG=4 next sample
%	time. For more information and other options see SFUNC.
%
%	Calling ROSSLER2 with a FLAG of zero:
%	[SIZES]=ROSSLER2([],[],[],0),  returns a vector, SIZES, which
%	contains the sizes of the state vector and other parameters.
%		SIZES(1) number of states
%		SIZES(2) number of discrete states
%		SIZES(3) number of outputs
%		SIZES(4) number of inputs
%		SIZES(5) number of roots (currently unsupported)
%		SIZES(6) direct feedthrough flag
%		SIZES(7) number of sample times
%
%	For the definition of other parameters in SIZES, see SFUNC.
%	See also, TRIM, LINMOD, LINSIM, EULER, RK23, RK45, ADAMS, GEAR.

% Note: This M-file is only used for saving graphical information;
%       after the model is loaded into memory an internal model
%       representation is used.

% the system will take on the name of this mfile:
sys = mfilename;
new_system(sys)
simver(1.3)
if (0 == (nargin + nargout))
     set_param(sys,'Location',[171,93,615,425])
     open_system(sys)
end;
set_param(sys,'algorithm',     'RK-45')
set_param(sys,'Start time',    '0.0')
set_param(sys,'Stop time',     '1000')
set_param(sys,'Min step size', '0.04')
set_param(sys,'Max step size', '.04')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')

add_block('built-in/Integrator',[sys,'/',['   X',13,'']])
set_param([sys,'/',['   X',13,'']],...
		'ForeGround',2,...
		'Initial','1',...
		'position',[250,45,270,65])

add_block('built-in/Integrator',[sys,'/',' Y'])
set_param([sys,'/',' Y'],...
		'ForeGround',4,...
		'Initial','-4.',...
		'position',[250,95,270,115])

add_block('built-in/Integrator',[sys,'/','Z'])
set_param([sys,'/','Z'],...
		'ForeGround',6,...
		'Initial','.5',...
		'position',[250,155,270,175])

add_block('built-in/To Workspace',[sys,'/','To Workspace2'])
set_param([sys,'/','To Workspace2'],...
		'mat-name','z',...
		'buffer','[5000,1,.04]',...
		'position',[370,157,420,173])

add_block('built-in/To Workspace',[sys,'/','To Workspace1'])
set_param([sys,'/','To Workspace1'],...
		'mat-name','y',...
		'buffer','[5000,1,.04]',...
		'position',[370,97,420,113])

add_block('built-in/To Workspace',[sys,'/','To Workspace'])
set_param([sys,'/','To Workspace'],...
		'mat-name','x',...
		'buffer','[5000,1,.04]',...
		'position',[370,47,420,63])

add_block('built-in/Sum',[sys,'/','Sum'])
set_param([sys,'/','Sum'],...
		'inputs','--',...
		'position',[140,45,160,65])

add_block('built-in/Sum',[sys,'/','Sum2'])
set_param([sys,'/','Sum2'],...
		'position',[140,95,160,115])

add_block('built-in/Sum',[sys,'/','Sum1'])
set_param([sys,'/','Sum1'],...
		'position',[140,155,160,175])

add_block('built-in/Product',[sys,'/','z(x-c)'])
set_param([sys,'/','z(x-c)'],...
		'position',[85,165,110,185])

add_block('built-in/Sum',[sys,'/','x-c'])
set_param([sys,'/','x-c'],...
		'inputs','+-',...
		'position',[50,245,70,265])

add_block('built-in/Constant',[sys,'/','c'])
set_param([sys,'/','c'],...
		'Value','5',...
		'position',[15,285,35,305])

add_block('built-in/Constant',[sys,'/','b'])
set_param([sys,'/','b'],...
		'Value','0.2',...
		'position',[105,275,125,295])

add_block('built-in/Note',[sys,'/','Rossler system'])
set_param([sys,'/','Rossler system'],...
		'position',[215,290,220,295])

add_block('built-in/Scope',[sys,'/','Scope'])
set_param([sys,'/','Scope'],...
		'Vgain','10.660000',...
		'Hgain','200.000000',...
		'Vmax','21.320000',...
		'Hmax','400.000000',...
		'Window',[477,394,799,598])
open_system([sys,'/','Scope'])
set_param([sys,'/','Scope'],...
		'position',[360,2,380,28])

add_block('built-in/Gain',[sys,'/','a'])
set_param([sys,'/','a'],...
		'Gain','0.2',...
		'position',[60,84,95,126])
add_line(sys,[165,105;245,105])
add_line(sys,[165,55;245,55])
add_line(sys,[165,165;245,165])
add_line(sys,[275,165;365,165])
add_line(sys,[275,105;365,105])
add_line(sys,[275,55;365,55])
add_line(sys,[275,105;275,80;130,80;135,60])
add_line(sys,[275,165;275,215;20,215;20,50;135,50])
add_line(sys,[100,105;135,110])
add_line(sys,[275,55;275,20;100,20;100,100;135,100])
add_line(sys,[275,105;275,140;50,140;55,105])
add_line(sys,[275,55;275,65;305,65;305,235;25,235;25,250;45,250])
add_line(sys,[40,295;45,260])
add_line(sys,[75,255;90,255;90,200;45,200;45,180;80,180])
add_line(sys,[275,165;275,145;55,145;55,170;80,170])
add_line(sys,[115,175;135,160])
add_line(sys,[130,285;140,285;140,205;115,205;115,190;135,170])
add_line(sys,[330,55;330,15;355,15])

drawnow

% Return any arguments.
if (nargin | nargout)
	% Must use feval here to access system in memory
	if (nargin > 3)
		if (flag == 0)
			eval(['[ret,x0,str,ts,xts]=',sys,'(t,x,u,flag);'])
		else
			eval(['ret =', sys,'(t,x,u,flag);'])
		end
	else
		[ret,x0,str,ts,xts] = feval(sys);
	end
else
	drawnow % Flash up the model and execute load callback
end