//DISCRGEN_f Scicos discrete time and amplitude signal generator block //Classical interface function ver1.0 - scilab-3 //30 sept 2004 - IRCOM GROUP - Author : A.Layec function [x,y,typ]=DISCRGEN_f(job,arg1,arg2) // Copyright INRIA 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 TEXT=['Set Discrete Generator parameters'] [ok,frequ,init_state,typ,param,exprs]=getvalue(TEXT,.. ['Frequency sampling (Hz)';'Initial condition';.. 'Type of generator';'Parameters of generator'],.. list('vec',-1,'vec',-1,'vec',1,'vec',-1),.. exprs) if ~ok then break,end if(size(frequ)==size(init_state)) then Nu=size(frequ,'*') frequ=frequ(:) mess=[] for i=1:Nu if frequ(i)<0 then mess=[mess;'frequency sampling must be positive'] ok=%f end end if (typ<>1 & typ<>2) then mess=[mess;'Type of generator must be 1 or 2'] ok=%f end if ~ok then message(mess) else [model,graphics,ok]=check_io(model,graphics,[],Nu,1,[]) if ok then graphics.exprs=exprs model.rpar=param(:) model.ipar=typ model.dstate=init_state x.graphics=graphics; x.model=model break end end else message('All parameters must have the same size'); end end case 'define' then Nu=1 frequ=0.5 init_state=0 typ=1 param=[2*%pi*0.1;2^4] model=scicos_model() model.sim=list('discrgen',4) model.in=[] model.out=Nu model.evtin=1 model.evtout=[] model.dstate=init_state model.rpar=param(:) model.ipar=typ model.blocktype='d' model.firing=[] model.dep_ut=[%f %f] exprs=[string(frequ);string(init_state);'1';'2*%pi*0.1;2^4'] gr_i=['txt=[''DISCRGEN''];'; 'xstringb(orig(1),orig(2),txt,sz(1),sz(2),''fill'');'] x=standard_define([2 2],model,exprs,gr_i) end endfunction