signal csp = c(1) + sc1*inc + [ename = e1]
@state sc1 =c(3)+ c(4)*sc1(-1)+ [ename = e2]
@evar var(e1)=exp(c(2))
@evar var(e2)=exp(c(5))
@evar cov(e1,e2)=c(6)
param c(1) 449.07 c(2) 10.02 c(3) 0.092 c(4) 0.877  c(5) -11.02 c(6) 0.6
'scalar [email=tss=@sumsq(csp-@mean(csp]tss=@sumsq(csp-@mean(csp[/email]))
'scalar [email=r2=1-@sumsq(e)/tss]r2=1-@sumsq(e)/tss[/email]
'scalar dw= @sumsq(e -e1) / @sumsq(e)
特别是scalar是怎么产生的。