use plotyy(x,y2,x,y1) first, it draw y2(y axis at left) and y1 (y axis at right). then use 'hold on', then draw y3, y4,..,yn,.. by plot command, they will use left-hand side y axis as y2.
f*y
6 楼
多谢各位
【在 g****y 的大作中提到】 : use plotyy(x,y2,x,y1) first, it draw y2(y axis at left) and y1 (y axis at : right). : then use 'hold on', : then draw y3, y4,..,yn,.. by plot command, they will use left-hand side y : axis as y2.