HYSTHERESIS
function [x,y,typ]=HYSTHERESIS(job,arg1,arg2)
x=[];y=[];typ=[]
select job
case 'plot' then
standard_draw(arg1)
case 'getinputs' then
[x,y,typ]=standard_inputs(arg1)
case 'getoutputs' then
[x,y,typ]=standard_outputs(arg1)
case 'getorigin' then
[x,y]=standard_origin(arg1)
case 'set' then
x=arg1;
graphics=arg1.graphics;exprs=graphics.exprs
model=arg1.model;
while %t do
[ok,high_lim,low_lim,out_high,out_low,nzz,exprs]=getvalue('Set parameters',..
['switch on at';'switch off at';'output when on';
'output when off';'use zero crossing: yes (1), no (0)'],..
list('vec',1,'vec',1,'vec',1,'vec',1,'vec',1),exprs)
if ~ok then break,end
if low_lim>high_lim then
message('switch on value must be larger than switch off value')
else
graphics.exprs=exprs;
model.rpar=[high_lim,low_lim,out_high,out_low]'
if nzz>0 then nzz=2,end
model.nzcross=nzz
x.graphics=graphics;x.model=model
break
end
end
case 'define' then
in=1
ipar=[0] // rule
nzz=2
rpar=[1;0;1;0]
model=scicos_model()
model.sim=list('hystheresis',4)
model.in=in
model.out=1
model.rpar=rpar
model.nzcross=nzz
model.nmode=1
model.blocktype='c'
model.dep_ut=[%t %f]
exprs=[string(rpar);string(sign(nzz))]
gr_i=['xrect(orig(1)+0.329*sz(1),orig(2)+0.843*sz(2),0.282*sz(1),0.686*sz(2))';
'xrect(orig(1)+0.613*sz(1),orig(2)+0.843*sz(2),0.256*sz(1),0.003*sz(2))';
'xrect(orig(1)+0.082*sz(1),orig(2)+0.16*sz(2),0.245*sz(1),0.003*sz(2))']
x=standard_define([2 2],model,exprs,gr_i)
end
endfunction