matlab画图

1. scatter调legend大小

objhl = findobj(leg, 'type', 'patch'); % objects of legend of type patch
set(objhl, 'Markersize', 12); % set marker size as desired

2. Matlab怎么调整图片的大小，使它成为特定的长宽
   https://zhidao.baidu.com/question/985342871030671179.html