> > x = randn (10,1); x (7 [4]) = nan
x =
0.5080
0.2820
0.0335
南
1.1275
0.3502
南
0.0229
-0.2620
-1.7502
> > (pq) =(找到(isnan (x) 1) 1找到(isnan (x) 1,“最后一次”)+ 1]
pq =
3 8
> >