plots the residuals of an ARMA estimation
pltvarma(res)
* res = a tlist result from function varma
* nothing (printed on a graphic window)
load(GROCERDIR+'/data/varma_d.dat'); seriesd = log(seriesd)/log(10); y = transdif(seriesd,1,1,1,12); result=varma('y',0.8,[],[],0.6,0.1,12,'noprint'); pltvarma(result,'stud')